Merge branch 'gwagner/oauth2' into 'master'

OAuth2 Pkce Workflow

See merge request GNOME/librest!10

51 files changed, 2118 insertions, 2197 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e897e44..4ec1589 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@ build-librest:
     - dnf update -y --nogpgcheck
     - dnf -y install --nogpgcheck redhat-rpm-config
       glib2-devel gobject-introspection-devel libxml2-devel meson ninja-build
-      libsoup-devel vala
+      libsoup-devel vala json-glib-devel git python3-jinja2 python3-toml python3-typogrify python3-pygments
   script:
     - meson _build
     - ninja -C _build
@@ -64,6 +64,7 @@ reference:
       libxslt
       libsoup-devel
       gtk-doc
+      json-glib-devel
     MESON_VERSION: "0.55.3"
     MESON_EXTRA_FLAGS: "-Dintrospection=true"
     DOCS_FLAGS: -Dgtk_doc=true
diff --git a/AUTHORS b/AUTHORS
index 1a3ad8a..c309f7e 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,2 +1,3 @@
 Rob Bradford <rob@linux.intel.com>
 Ross Burton <ross@linux.intel.com>
+Günther Wagner <info@gunibert.de>
diff --git a/ChangeLog b/ChangeLog
deleted file mode 100644
index e69de29..0000000
--- a/ChangeLog
+++ /dev/null
diff --git a/INSTALL b/INSTALL
deleted file mode 100644
index d3c5b40..0000000
--- a/INSTALL
+++ /dev/null
@@ -1,237 +0,0 @@
-Installation Instructions
-*************************
-
-Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
-2006, 2007 Free Software Foundation, Inc.
-
-This file is free documentation; the Free Software Foundation gives
-unlimited permission to copy, distribute and modify it.
-
-Basic Installation
-==================
-
-Briefly, the shell commands `./configure; make; make install' should
-configure, build, and install this package.  The following
-more-detailed instructions are generic; see the `README' file for
-instructions specific to this package.
-
-   The `configure' shell script attempts to guess correct values for
-various system-dependent variables used during compilation.  It uses
-those values to create a `Makefile' in each directory of the package.
-It may also create one or more `.h' files containing system-dependent
-definitions.  Finally, it creates a shell script `config.status' that
-you can run in the future to recreate the current configuration, and a
-file `config.log' containing compiler output (useful mainly for
-debugging `configure').
-
-   It can also use an optional file (typically called `config.cache'
-and enabled with `--cache-file=config.cache' or simply `-C') that saves
-the results of its tests to speed up reconfiguring.  Caching is
-disabled by default to prevent problems with accidental use of stale
-cache files.
-
-   If you need to do unusual things to compile the package, please try
-to figure out how `configure' could check whether to do them, and mail
-diffs or instructions to the address given in the `README' so they can
-be considered for the next release.  If you are using the cache, and at
-some point `config.cache' contains results you don't want to keep, you
-may remove or edit it.
-
-   The file `configure.ac' (or `configure.in') is used to create
-`configure' by a program called `autoconf'.  You need `configure.ac' if
-you want to change it or regenerate `configure' using a newer version
-of `autoconf'.
-
-The simplest way to compile this package is:
-
-  1. `cd' to the directory containing the package's source code and type
-     `./configure' to configure the package for your system.
-
-     Running `configure' might take a while.  While running, it prints
-     some messages telling which features it is checking for.
-
-  2. Type `make' to compile the package.
-
-  3. Optionally, type `make check' to run any self-tests that come with
-     the package.
-
-  4. Type `make install' to install the programs and any data files and
-     documentation.
-
-  5. You can remove the program binaries and object files from the
-     source code directory by typing `make clean'.  To also remove the
-     files that `configure' created (so you can compile the package for
-     a different kind of computer), type `make distclean'.  There is
-     also a `make maintainer-clean' target, but that is intended mainly
-     for the package's developers.  If you use it, you may have to get
-     all sorts of other programs in order to regenerate files that came
-     with the distribution.
-
-  6. Often, you can also type `make uninstall' to remove the installed
-     files again.
-
-Compilers and Options
-=====================
-
-Some systems require unusual options for compilation or linking that the
-`configure' script does not know about.  Run `./configure --help' for
-details on some of the pertinent environment variables.
-
-   You can give `configure' initial values for configuration parameters
-by setting variables in the command line or in the environment.  Here
-is an example:
-
-     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
-
-   *Note Defining Variables::, for more details.
-
-Compiling For Multiple Architectures
-====================================
-
-You can compile the package for more than one kind of computer at the
-same time, by placing the object files for each architecture in their
-own directory.  To do this, you can use GNU `make'.  `cd' to the
-directory where you want the object files and executables to go and run
-the `configure' script.  `configure' automatically checks for the
-source code in the directory that `configure' is in and in `..'.
-
-   With a non-GNU `make', it is safer to compile the package for one
-architecture at a time in the source code directory.  After you have
-installed the package for one architecture, use `make distclean' before
-reconfiguring for another architecture.
-
-Installation Names
-==================
-
-By default, `make install' installs the package's commands under
-`/usr/local/bin', include files under `/usr/local/include', etc.  You
-can specify an installation prefix other than `/usr/local' by giving
-`configure' the option `--prefix=PREFIX'.
-
-   You can specify separate installation prefixes for
-architecture-specific files and architecture-independent files.  If you
-pass the option `--exec-prefix=PREFIX' to `configure', the package uses
-PREFIX as the prefix for installing programs and libraries.
-Documentation and other data files still use the regular prefix.
-
-   In addition, if you use an unusual directory layout you can give
-options like `--bindir=DIR' to specify different values for particular
-kinds of files.  Run `configure --help' for a list of the directories
-you can set and what kinds of files go in them.
-
-   If the package supports it, you can cause programs to be installed
-with an extra prefix or suffix on their names by giving `configure' the
-option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
-
-Optional Features
-=================
-
-Some packages pay attention to `--enable-FEATURE' options to
-`configure', where FEATURE indicates an optional part of the package.
-They may also pay attention to `--with-PACKAGE' options, where PACKAGE
-is something like `gnu-as' or `x' (for the X Window System).  The
-`README' should mention any `--enable-' and `--with-' options that the
-package recognizes.
-
-   For packages that use the X Window System, `configure' can usually
-find the X include and library files automatically, but if it doesn't,
-you can use the `configure' options `--x-includes=DIR' and
-`--x-libraries=DIR' to specify their locations.
-
-Specifying the System Type
-==========================
-
-There may be some features `configure' cannot figure out automatically,
-but needs to determine by the type of machine the package will run on.
-Usually, assuming the package is built to be run on the _same_
-architectures, `configure' can figure that out, but if it prints a
-message saying it cannot guess the machine type, give it the
-`--build=TYPE' option.  TYPE can either be a short name for the system
-type, such as `sun4', or a canonical name which has the form:
-
-     CPU-COMPANY-SYSTEM
-
-where SYSTEM can have one of these forms:
-
-     OS KERNEL-OS
-
-   See the file `config.sub' for the possible values of each field.  If
-`config.sub' isn't included in this package, then this package doesn't
-need to know the machine type.
-
-   If you are _building_ compiler tools for cross-compiling, you should
-use the option `--target=TYPE' to select the type of system they will
-produce code for.
-
-   If you want to _use_ a cross compiler, that generates code for a
-platform different from the build platform, you should specify the
-"host" platform (i.e., that on which the generated programs will
-eventually be run) with `--host=TYPE'.
-
-Sharing Defaults
-================
-
-If you want to set default values for `configure' scripts to share, you
-can create a site shell script called `config.site' that gives default
-values for variables like `CC', `cache_file', and `prefix'.
-`configure' looks for `PREFIX/share/config.site' if it exists, then
-`PREFIX/etc/config.site' if it exists.  Or, you can set the
-`CONFIG_SITE' environment variable to the location of the site script.
-A warning: not all `configure' scripts look for a site script.
-
-Defining Variables
-==================
-
-Variables not defined in a site shell script can be set in the
-environment passed to `configure'.  However, some packages may run
-configure again during the build, and the customized values of these
-variables may be lost.  In order to avoid this problem, you should set
-them in the `configure' command line, using `VAR=value'.  For example:
-
-     ./configure CC=/usr/local2/bin/gcc
-
-causes the specified `gcc' to be used as the C compiler (unless it is
-overridden in the site shell script).
-
-Unfortunately, this technique does not work for `CONFIG_SHELL' due to
-an Autoconf bug.  Until the bug is fixed you can use this workaround:
-
-     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
-
-`configure' Invocation
-======================
-
-`configure' recognizes the following options to control how it operates.
-
-`--help'
-`-h'
-     Print a summary of the options to `configure', and exit.
-
-`--version'
-`-V'
-     Print the version of Autoconf used to generate the `configure'
-     script, and exit.
-
-`--cache-file=FILE'
-     Enable the cache: use and save the results of the tests in FILE,
-     traditionally `config.cache'.  FILE defaults to `/dev/null' to
-     disable caching.
-
-`--config-cache'
-`-C'
-     Alias for `--cache-file=config.cache'.
-
-`--quiet'
-`--silent'
-`-q'
-     Do not print messages saying which checks are being made.  To
-     suppress all normal output, redirect it to `/dev/null' (any error
-     messages will still be shown).
-
-`--srcdir=DIR'
-     Look for the package's source code in directory DIR.  Usually
-     `configure' can determine that directory automatically.
-
-`configure' also accepts some other, not widely useful, options.  Run
-`configure --help' for more details.
-
diff --git a/Makefile.am b/Makefile.am
deleted file mode 100644
index e9d99aa..0000000
--- a/Makefile.am
+++ /dev/null
@@ -1,36 +0,0 @@
-SUBDIRS = rest rest-extras examples docs tests
-
-%-$(API_VERSION).pc: %.pc
-	$(AM_V_GEN)cp $< $@
-
-pkgconfigdir   = $(libdir)/pkgconfig
-pkgconfig_DATA = rest-$(API_VERSION).pc rest-extras-$(API_VERSION).pc
-
-CLEANFILES = $(pkgconfig_DATA)
-
-DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
-
-ACLOCAL_AMFLAGS = -I build ${ACLOCAL_FLAGS}
-
-all-local: rest-$(API_VERSION).pc rest-extras-$(API_VERSION).pc
-
-if GCOV_ENABLED
-cov-reset:
-	@rm -fr coverage
-	@find . -name "*.gcda" -exec rm {} \;
-	@lcov --directory . --zerocounters
-
-cov-report:
-	@mkdir -p coverage
-	@lcov --compat-libtool --directory . --capture --output-file coverage/app.info
-	@genhtml -o coverage/ coverage/app.info
-
-cov:
-	@make cov-report
-
-clean-local:
-	@make cov-reset
-
-check:
-	@make cov
-endif
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..0c6127f
--- /dev/null
+++ b/NEWS
@@ -0,0 +1,5 @@
+Overview of changes for 0.9
+===========================
+* new oauth2 proxy to accomplish pkce workflow with api endpoints
+* introduced meson as buildsystem
+* introduced the possibility to build librest with soup-2.4 or soup-3.0
diff --git a/autogen.sh b/autogen.sh
deleted file mode 100755
index a345dc3..0000000
--- a/autogen.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/bin/sh
-
-set -e
-
-test -n "$srcdir" || srcdir=`dirname "$0"`
-test -n "$srcdir" || srcdir=.
-
-olddir=`pwd`
-cd "$srcdir"
-
-GTKDOCIZE=`which gtkdocize`
-if test -z $GTKDOCIZE; then
-  echo "*** No gtk-doc support ***"
-  echo "EXTRA_DIST =" > gtk-doc.make
-  echo "CLEANFILES =" >> gtk-doc.make
-else
-  gtkdocize --flavour no-tmpl || exit 1
-fi
-
-ACLOCAL="${ACLOCAL-aclocal} $ACLOCAL_FLAGS" autoreconf -v -i
-
-cd "$olddir"
-
-test -n "$NOCONFIGURE" || "$srcdir/configure" "$@"
diff --git a/build/Makefile.am b/build/Makefile.am
deleted file mode 100644
index a250674..0000000
--- a/build/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-EXTRA_DIST = introspection.m4
diff --git a/build/introspection.m4 b/build/introspection.m4
deleted file mode 100644
index 589721c..0000000
--- a/build/introspection.m4
+++ /dev/null
@@ -1,94 +0,0 @@
-dnl -*- mode: autoconf -*-
-dnl Copyright 2009 Johan Dahlin
-dnl
-dnl This file is free software; the author(s) gives unlimited
-dnl permission to copy and/or distribute it, with or without
-dnl modifications, as long as this notice is preserved.
-dnl
-
-# serial 1
-
-m4_define([_GOBJECT_INTROSPECTION_CHECK_INTERNAL],
-[
-    AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
-    AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
-    AC_BEFORE([LT_INIT],[$0])dnl setup libtool first
-
-    dnl enable/disable introspection
-    m4_if([$2], [require],
-    [dnl
-        enable_introspection=yes
-    ],[dnl
-        AC_ARG_ENABLE(introspection,
-                  AS_HELP_STRING([--enable-introspection[=@<:@no/auto/yes@:>@]],
-                                 [Enable introspection for this build]),, 
-                                 [enable_introspection=auto])
-    ])dnl
-
-    AC_MSG_CHECKING([for gobject-introspection])
-
-    dnl presence/version checking
-    AS_CASE([$enable_introspection],
-    [no], [dnl
-        found_introspection="no (disabled, use --enable-introspection to enable)"
-    ],dnl
-    [yes],[dnl
-        PKG_CHECK_EXISTS([gobject-introspection-1.0],,
-                         AC_MSG_ERROR([gobject-introspection-1.0 is not installed]))
-        PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1],
-                         found_introspection=yes,
-                         AC_MSG_ERROR([You need to have gobject-introspection >= $1 installed to build AC_PACKAGE_NAME]))
-    ],dnl
-    [auto],[dnl
-        PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1], found_introspection=yes, found_introspection=no)
-    ],dnl
-    [dnl	
-        AC_MSG_ERROR([invalid argument passed to --enable-introspection, should be one of @<:@no/auto/yes@:>@])
-    ])dnl
-
-    AC_MSG_RESULT([$found_introspection])
-
-    INTROSPECTION_SCANNER=
-    INTROSPECTION_COMPILER=
-    INTROSPECTION_GENERATE=
-    INTROSPECTION_GIRDIR=
-    INTROSPECTION_TYPELIBDIR=
-    if test "x$found_introspection" = "xyes"; then
-       INTROSPECTION_SCANNER=`$PKG_CONFIG --variable=g_ir_scanner gobject-introspection-1.0`
-       INTROSPECTION_COMPILER=`$PKG_CONFIG --variable=g_ir_compiler gobject-introspection-1.0`
-       INTROSPECTION_GENERATE=`$PKG_CONFIG --variable=g_ir_generate gobject-introspection-1.0`
-       INTROSPECTION_GIRDIR=`$PKG_CONFIG --variable=girdir gobject-introspection-1.0`
-       INTROSPECTION_TYPELIBDIR="$($PKG_CONFIG --variable=typelibdir gobject-introspection-1.0)"
-       INTROSPECTION_CFLAGS=`$PKG_CONFIG --cflags gobject-introspection-1.0`
-       INTROSPECTION_LIBS=`$PKG_CONFIG --libs gobject-introspection-1.0`
-       INTROSPECTION_MAKEFILE=`$PKG_CONFIG --variable=datadir gobject-introspection-1.0`/gobject-introspection-1.0/Makefile.introspection
-    fi
-    AC_SUBST(INTROSPECTION_SCANNER)
-    AC_SUBST(INTROSPECTION_COMPILER)
-    AC_SUBST(INTROSPECTION_GENERATE)
-    AC_SUBST(INTROSPECTION_GIRDIR)
-    AC_SUBST(INTROSPECTION_TYPELIBDIR)
-    AC_SUBST(INTROSPECTION_CFLAGS)
-    AC_SUBST(INTROSPECTION_LIBS)
-    AC_SUBST(INTROSPECTION_MAKEFILE)
-
-    AM_CONDITIONAL(HAVE_INTROSPECTION, test "x$found_introspection" = "xyes")
-])
-
-
-dnl Usage:
-dnl   GOBJECT_INTROSPECTION_CHECK([minimum-g-i-version])
-
-AC_DEFUN([GOBJECT_INTROSPECTION_CHECK],
-[
-  _GOBJECT_INTROSPECTION_CHECK_INTERNAL([$1])
-])
-
-dnl Usage:
-dnl   GOBJECT_INTROSPECTION_REQUIRE([minimum-g-i-version])
-
-
-AC_DEFUN([GOBJECT_INTROSPECTION_REQUIRE],
-[
-  _GOBJECT_INTROSPECTION_CHECK_INTERNAL([$1], [require])
-])
diff --git a/configure.ac b/configure.ac
deleted file mode 100644
index 75c02fe..0000000
--- a/configure.ac
+++ /dev/null
@@ -1,161 +0,0 @@
-m4_define([rest_major], [0])
-m4_define([rest_minor], [9])
-m4_define([rest_micro], [0])
-
-m4_define([rest_version], [rest_major.rest_minor.rest_micro])
-
-
-AC_PREREQ([2.63])
-AC_INIT([rest], [rest_version],
-        [],
-        [rest],
-        [https://gitlab.gnome.org/GNOME/librest/])
-
-AC_CONFIG_SRCDIR([rest/rest-proxy.h])
-AC_CONFIG_HEADERS([config.h])
-AC_CONFIG_AUX_DIR([build])
-AC_CONFIG_MACRO_DIR([build])
-
-AM_INIT_AUTOMAKE([1.11 foreign -Wno-portability no-define dist-xz])
-
-AM_SILENT_RULES([yes])
-
-AC_CANONICAL_HOST
-
-AC_PROG_CC
-AC_PROG_CC_STDC
-AC_PROG_INSTALL
-AC_ISC_POSIX
-AC_HEADER_STDC
-
-AM_PROG_CC_C_O
-
-# require libtool >= 2.2
-LT_PREREQ([2.2.6])
-LT_INIT([disable-static])
-
-PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.67.4)
-PKG_CHECK_MODULES(XML, libxml-2.0)
-PKG_CHECK_MODULES(GTHREAD, gthread-2.0)
-
-# gtkdocize greps for ^GTK_DOC_CHECK and parses it, so you need to have
-# it on it's own line.
-m4_ifdef([GTK_DOC_CHECK], [
-GTK_DOC_CHECK([1.13], [--flavour no-tmpl])
-])
-
-GOBJECT_INTROSPECTION_CHECK([0.6.7])
-
-AC_PATH_PROG([GLIB_MKENUMS],[glib-mkenums])
-
-localedir=${datadir}/locale
-AC_SUBST(localedir)
-
-AC_MSG_CHECKING([for libsoup version to use])
-AC_ARG_WITH(soup,
-            [AC_HELP_STRING([--soup=2|3],
-                            [version of libsoup library to use (default: 2)])],
-            [case "$withval" in
-                2|3) ;;
-                *) AC_MSG_ERROR([invalid argument "$withval" for --with-soup]) ;;
-             esac],
-            [with_soup=2])
-AC_MSG_RESULT([$with_soup])
-
-API_MAJOR=1
-
-if test "$with_soup" = "2"; then
-    PKG_CHECK_MODULES(SOUP, libsoup-2.4 >= 2.42)
-    SOUP_API_VERSION=2.4
-    API_MINOR=0
-    AC_DEFINE([WITH_SOUP_2],[1],[Define if libsoup version used is 2])
-else
-    PKG_CHECK_MODULES(SOUP, libsoup-3.0 >= 2.99.8)
-    SOUP_API_VERSION=3.0
-    API_MINOR=1
-fi
-
-AM_CONDITIONAL([WITH_SOUP_2],[test "$with_soup" = "2"])
-AC_SUBST(SOUP_API_VERSION)
-
-AC_SUBST([API_VERSION],[$API_MAJOR.$API_MINOR])
-AC_SUBST([API_VERSION_AM],[$API_MAJOR\_$API_MINOR])
-AC_DEFINE_UNQUOTED(API_VERSION, [$API_VERSION], [API version])
-
-dnl === Coverage report =======================================================
-AC_PATH_PROG([GCOV], [lcov], [enable_gcov=no])
-
-AC_MSG_CHECKING([whether to build with gcov testing])
-
-AC_ARG_ENABLE([gcov],
-              [AS_HELP_STRING([--enable-gcov],
-                              [Whether to enable coverage testing (requires gcc
-and lcov)])],
-              [],
-              [enable_gcov=no])
-
-AS_IF([test "x$enable_gcov" = "xyes" && test "x$GCC" = "xyes"],
-      [
-        AS_IF([test "x$enable_gtk_doc" = "xyes"],
-              [AC_MSG_WARN([gtk-doc is enabled, this may go horribly wrong])],
-              [AC_MSG_RESULT([yes])]
-        )
-
-        GCOV_CFLAGS="-g -O0 -fprofile-arcs -ftest-coverage"
-        GCOV_LDFLAGS="-lgcov"
-      ],
-      [AC_MSG_RESULT([no])]
-)
-
-AM_CONDITIONAL([GCOV_ENABLED], [test "x$enable_gcov" = "xyes"])
-AC_SUBST([GCOV_CFLAGS])
-AC_SUBST([GCOV_LDFLAGS])
-
-dnl Stolen from glib-networking - those guys rock
-AC_MSG_CHECKING([location of system Certificate Authority list])
-AC_ARG_WITH(ca-certificates,
-            [AC_HELP_STRING([--with-ca-certificates=@<:@path@:>@],
-                            [path to system Certificate Authority list])])
-if test "$with_ca_certificates" = "no"; then
-    AC_MSG_RESULT([disabled])
-else
-    if test -z "$with_ca_certificates"; then
-        for f in /etc/pki/tls/certs/ca-bundle.crt \
-                 /etc/ssl/certs/ca-certificates.crt \
-                 /etc/ssl/ca-bundle.pem; do
-            if test -f "$f"; then
-                with_ca_certificates="$f"
-            fi
-        done
-        if test -z "$with_ca_certificates"; then
-            AC_MSG_ERROR([could not find. Use --with-ca-certificates=path to set, or --without-ca-certificates to disable])
-        fi
-    fi
-
-    AC_MSG_RESULT($with_ca_certificates)
-    AC_DEFINE_UNQUOTED(REST_SYSTEM_CA_FILE, ["$with_ca_certificates"], [The system TLS CA list])
-fi
-
-AC_OUTPUT([
-        Makefile
-        rest/Makefile
-        rest-extras/Makefile
-        examples/Makefile
-        docs/Makefile
-        docs/reference/Makefile
-        docs/reference/rest/Makefile
-        tests/Makefile
-        rest.pc
-        rest-extras.pc
-])
-
-echo ""
-echo "                 LibRest $VERSION"
-echo "                 ================"
-echo ""
-echo "                   prefix:   ${prefix}"
-echo "          libsoup version:   ${with_soup}"
-echo ""
-echo "            Documentation:   ${enable_gtk_doc}"
-echo "       Introspection data:   ${enable_introspection}"
-echo ""
diff --git a/docs/Makefile.am b/docs/Makefile.am
deleted file mode 100644
index f3ddc22..0000000
--- a/docs/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-SUBDIRS = reference
diff --git a/docs/librest.toml.in b/docs/librest.toml.in
index 4f4c59d..1f95b0b 100644
--- a/docs/librest.toml.in
+++ b/docs/librest.toml.in
@@ -6,7 +6,7 @@ repository_url = "https://gitlab.gnome.org/GNOME/librest.git"
 authors = "Günther Wagner"
 license = "LGPL-2.1-or-later"
 description = "REST client library"
-dependencies = [ "GObject-2.0", "Gio-2.0", "Soup-2.4" ]
+dependencies = [ "GObject-2.0", "Gio-2.0", "Soup-@SOUP_VERSION@" ]
 devhelp = true
 search_index = true
 
@@ -20,10 +20,10 @@ search_index = true
   description = "GObject interfaces and objects"
   docs_url = "https://developer.gnome.org/gio/stable"
 
-  [dependencies."Soup-2.4"]
+  [dependencies."Soup-@SOUP_VERSION@"]
   name = "Soup"
   description = "HTTP library"
-  docs_url = "https://developer.gnome.org/libsoup/stable"
+  docs_url = "https://libsoup.org/libsoup-@SOUP_VERSION@/index.html"
 
 [theme]
 name = "basic"
diff --git a/docs/meson.build b/docs/meson.build
index 2eeb084..f2aeb76 100644
--- a/docs/meson.build
+++ b/docs/meson.build
@@ -1,5 +1,3 @@
-subdir('reference/rest')
-
 if get_option('gtk_doc') and get_option('introspection')
   dependency('gi-docgen', version: '>= 2021.6',
     fallback: ['gi-docgen', 'dummy_dep'],
@@ -11,6 +9,7 @@ if get_option('gtk_doc') and get_option('introspection')
 
   toml_conf = configuration_data()
   toml_conf.set('REST_VERSION', meson.project_version())
+  toml_conf.set('SOUP_VERSION', libsoup_api_version)
 
   rest_toml = configure_file(
     input: 'librest.toml.in',
@@ -39,5 +38,19 @@ if get_option('gtk_doc') and get_option('introspection')
     install_dir: rest_docdir,
   )
 
+  # if get_option('tests')
+  #   test('doc-check',
+  #     gidocgen,
+  #     args: [
+  #       'check',
+  #       '--config', rest_toml,
+  #       '--add-include-path=@0@'.format(meson.current_build_dir() / '../rest'),
+  #       librest_gir[0],
+  #     ],
+  #     depends: librest_gir[0],
+  #     suite: ['docs'],
+  #   )
+  # endif
+
 endif
 
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
deleted file mode 100644
index b7e99c2..0000000
--- a/docs/reference/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-SUBDIRS = rest
diff --git a/docs/reference/rest/Makefile.am b/docs/reference/rest/Makefile.am
deleted file mode 100644
index a4c690e..0000000
--- a/docs/reference/rest/Makefile.am
+++ /dev/null
@@ -1,92 +0,0 @@
-## Process this file with automake to produce Makefile.in
-
-# We require automake 1.6 at least.
-AUTOMAKE_OPTIONS = 1.6
-
-# This is a blank Makefile.am for using gtk-doc.
-# Copy this to your project's API docs directory and modify the variables to
-# suit your project. See the GTK+ Makefiles in gtk+/docs/reference for examples
-# of using the various options.
-
-# The name of the module, e.g. 'glib'.
-DOC_MODULE=rest
-DOC_MODULE_VERSION=@API_VERSION@
-
-# The top-level SGML file. You can change this if you want to.
-DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.xml
-
-# The directory containing the source code. Relative to $(srcdir).
-# gtk-doc will search all .c & .h files beneath here for inline comments
-# documenting the functions and macros.
-# e.g. DOC_SOURCE_DIR=../../../gtk
-DOC_SOURCE_DIR=../../../rest ../../../rest-extras
-
-# Extra options to pass to gtkdoc-scangobj. Not normally needed.
-SCANGOBJ_OPTIONS=
-
-# Extra options to supply to gtkdoc-scan.
-# e.g. SCAN_OPTIONS=--deprecated-guards="GTK_DISABLE_DEPRECATED"
-SCAN_OPTIONS=
-
-# Extra options to supply to gtkdoc-mkdb.
-# e.g. MKDB_OPTIONS=--sgml-mode --output-format=xml
-MKDB_OPTIONS=--sgml-mode --output-format=xml
-
-# Extra options to supply to gtkdoc-mktmpl
-# e.g. MKTMPL_OPTIONS=--only-section-tmpl
-MKTMPL_OPTIONS=
-
-# Extra options to supply to gtkdoc-mkhtml
-MKHTML_OPTIONS=
-
-# Extra options to supply to gtkdoc-fixref. Not normally needed.
-# e.g. FIXXREF_OPTIONS=--extra-dir=../gdk-pixbuf/html --extra-dir=../gdk/html
-FIXXREF_OPTIONS=
-
-# Used for dependencies. The docs will be rebuilt if any of these change.
-# e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h
-# e.g. CFILE_GLOB=$(top_srcdir)/gtk/*.c
-HFILE_GLOB=$(top_srcdir)/rest/*.h $(top_srcdir)/rest-extras/*.h
-CFILE_GLOB=$(top_srcdir)/rest/*.c $(top_srcdir)/rest-extras/*.c
-
-# Header files to ignore when scanning.
-# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h
-IGNORE_HFILES=sha1.h rest-private.h rest-proxy-call-private.h oauth-proxy-private.h oauth2-proxy-private.h flickr-proxy-private.h lastfm-proxy-private.h
-
-# Images to copy into HTML directory.
-# e.g. HTML_IMAGES=$(top_srcdir)/gtk/stock-icons/stock_about_24.png
-HTML_IMAGES=
-
-# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE).
-# e.g. content_files=running.sgml building.sgml changes-2.0.sgml
-content_files=
-
-# SGML files where gtk-doc abbrevations (#GtkWidget) are expanded
-# These files must be listed here *and* in content_files
-# e.g. expand_content_files=running.sgml
-expand_content_files=
-
-# CFLAGS and LDFLAGS for compiling gtkdoc-scangobj with your library.
-# Only needed if you are using gtkdoc-scangobj to dynamically query widget
-# signals and properties.
-# e.g. INCLUDES=-I$(top_srcdir) -I$(top_builddir) $(GTK_DEBUG_FLAGS)
-# e.g. GTKDOC_LIBS=$(top_builddir)/gtk/$(gtktargetlib)
-AM_CPPFLAGS=-I$(top_srcdir) -I$(top_builddir) $(GLIB_CFLAGS) $(SOUP_CFLAGS) $(XML_CFLAGS)
-GTKDOC_LIBS=$(top_builddir)/rest/librest-@API_VERSION@.la $(top_builddir)/rest-extras/librest-extras-@API_VERSION@.la \
-	    $(GLIB_LIBS) $(SOUP_LIBS) $(XML_LIBS)
-
-
-# This includes the standard gtk-doc make rules, copied by gtkdocize.
-include $(top_srcdir)/gtk-doc.make
-
-# Other files to distribute
-# e.g. EXTRA_DIST += version.xml.in
-EXTRA_DIST +=
-
-# Files not to distribute
-# for --rebuild-types in $(SCAN_OPTIONS), e.g. $(DOC_MODULE).types
-# for --rebuild-sections in $(SCAN_OPTIONS) e.g. $(DOC_MODULE)-sections.txt
-#DISTCLEANFILES +=
-
-# Comment this out if you want your docs-status tested during 'make check'
-#TESTS = $(GTKDOC_CHECK)
diff --git a/docs/reference/rest/meson.build b/docs/reference/rest/meson.build
deleted file mode 100644
index d02adf3..0000000
--- a/docs/reference/rest/meson.build
+++ /dev/null
@@ -1,26 +0,0 @@
-gnome.gtkdoc('rest',
-  src_dir: [
-    include_directories('../../../rest'),
-    include_directories('../../../rest-extras'),
-  ],
-  main_xml: 'rest-docs.xml',
-  module_version: librest_api_version,
-  dependencies: [
-    librest_deps,
-    librest_dep,
-    librest_extras_dep,
-    librest_extras_deps,
-  ],
-  scan_args: [
-    '--rebuild-types',
-  ],
-  ignore_headers: [
-    'flickr-proxy-private.h',
-    'lastfm-proxy-private.h',
-    'oauth-proxy-private.h',
-    'oauth2-proxy-private.h',
-    'rest-private.h',
-    'rest-proxy-call-private.h',
-    'sha1.h',
-  ],
-)
diff --git a/docs/reference/rest/rest-docs.xml b/docs/reference/rest/rest-docs.xml
deleted file mode 100644
index 16f8d87..0000000
--- a/docs/reference/rest/rest-docs.xml
+++ /dev/null
@@ -1,51 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
-               "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
-<book id="index" xmlns:xi="http://www.w3.org/2003/XInclude">
-  <bookinfo>
-    <title>librest Reference Manual</title>
- </bookinfo>
-
-  <chapter>
-    <title>Generic Proxies</title>
-    <xi:include href="xml/rest-param.xml"/>
-    <xi:include href="xml/rest-params.xml"/>
-    <xi:include href="xml/rest-proxy.xml"/>
-    <xi:include href="xml/rest-proxy-call.xml"/>
-  </chapter>
-
-  <chapter>
-    <title>OAuth Proxies</title>
-    <xi:include href="xml/oauth-proxy.xml"/>
-    <xi:include href="xml/oauth-proxy-call.xml"/>
-    <xi:include href="xml/oauth2-proxy.xml"/>
-    <xi:include href="xml/oauth2-proxy-call.xml"/>
-  </chapter>
-
-  <chapter>
-    <title>Service-specific Proxies</title>
-    <xi:include href="xml/flickr-proxy.xml"/>
-    <xi:include href="xml/flickr-proxy-call.xml"/>
-    <xi:include href="xml/lastfm-proxy.xml"/>
-    <xi:include href="xml/lastfm-proxy-call.xml"/>
-  </chapter>
-  <chapter>
-    <title>XML Parsing</title>
-    <xi:include href="xml/rest-xml-parser.xml"/>
-  </chapter>
-
-  <chapter>
-    <title>Glossaries</title>
-    <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
-  </chapter>
-
-  <index>
-    <title>Index of all symbols</title>
-    <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
-  </index>
-
-  <index role="deprecated">
-    <title>Index of deprecated symbols</title>
-    <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
-  </index>
-</book>
diff --git a/docs/reference/rest/rest-overrides.txt b/docs/reference/rest/rest-overrides.txt
deleted file mode 100644
index e69de29..0000000
--- a/docs/reference/rest/rest-overrides.txt
+++ /dev/null
diff --git a/docs/reference/rest/rest-sections.txt b/docs/reference/rest/rest-sections.txt
deleted file mode 100644
index ef4b3e3..0000000
--- a/docs/reference/rest/rest-sections.txt
+++ /dev/null
@@ -1,303 +0,0 @@
-<SECTION>
-<FILE>rest-xml-parser</FILE>
-<TITLE>RestXmlParser</TITLE>
-RestXmlParser
-RestXmlNode
-rest_xml_parser_new
-rest_xml_parser_parse_from_data
-rest_xml_node_ref
-rest_xml_node_unref
-rest_xml_node_get_attr
-rest_xml_node_find
-<SUBSECTION Standard>
-REST_XML_PARSER
-REST_IS_XML_PARSER
-REST_TYPE_XML_PARSER
-rest_xml_parser_get_type
-REST_XML_PARSER_CLASS
-REST_IS_XML_PARSER_CLASS
-REST_XML_PARSER_GET_CLASS
-REST_TYPE_XML_NODE
-rest_xml_node_get_type
-</SECTION>
-
-<SECTION>
-<FILE>rest-proxy-call</FILE>
-<TITLE>RestProxyCall</TITLE>
-RestProxyCall
-REST_PROXY_CALL_ERROR
-RestProxyCallError
-rest_proxy_call_set_method
-rest_proxy_call_get_method
-rest_proxy_call_set_function
-rest_proxy_call_get_function
-rest_proxy_call_add_header
-rest_proxy_call_add_headers
-rest_proxy_call_add_headers_from_valist
-rest_proxy_call_lookup_header
-rest_proxy_call_remove_header
-rest_proxy_call_add_param
-rest_proxy_call_add_param_full
-rest_proxy_call_add_params
-rest_proxy_call_add_params_from_valist
-rest_proxy_call_lookup_param
-rest_proxy_call_remove_param
-rest_proxy_call_get_params
-rest_proxy_call_run
-RestProxyCallAsyncCallback
-RestProxyCallUploadCallback
-rest_proxy_call_async
-rest_proxy_call_cancel
-rest_proxy_call_sync
-rest_proxy_call_upload
-rest_proxy_call_invoke_async
-rest_proxy_call_lookup_response_header
-rest_proxy_call_get_response_headers
-rest_proxy_call_get_payload_length
-rest_proxy_call_get_payload
-rest_proxy_call_get_status_code
-rest_proxy_call_get_status_message
-<SUBSECTION Standard>
-RestProxyCallPrivate
-REST_PROXY_CALL
-REST_IS_PROXY_CALL
-REST_TYPE_PROXY_CALL
-rest_proxy_call_get_type
-REST_PROXY_CALL_CLASS
-REST_IS_PROXY_CALL_CLASS
-REST_PROXY_CALL_GET_CLASS
-rest_proxy_call_error_quark
-</SECTION>
-
-<SECTION>
-<FILE>oauth2-proxy</FILE>
-<TITLE>OAuth2Proxy</TITLE>
-OAuth2Proxy
-oauth2_proxy_new
-oauth2_proxy_new_with_token
-oauth2_proxy_build_login_url_full
-oauth2_proxy_build_login_url
-oauth2_proxy_get_access_token
-oauth2_proxy_set_access_token
-oauth2_proxy_extract_access_token
-<SUBSECTION Standard>
-OAuth2ProxyClass
-OAuth2ProxyPrivate
-OAUTH2_PROXY
-OAUTH2_IS_PROXY
-OAUTH2_TYPE_PROXY
-oauth2_proxy_get_type
-OAUTH2_PROXY_CLASS
-OAUTH2_IS_PROXY_CLASS
-OAUTH2_PROXY_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>oauth2-proxy-call</FILE>
-<TITLE>OAuth2ProxyCall</TITLE>
-OAuth2ProxyCall
-<SUBSECTION Standard>
-OAuth2ProxyCallClass
-OAUTH2_PROXY_CALL
-OAUTH2_IS_PROXY_CALL
-OAUTH2_TYPE_PROXY_CALL
-oauth2_proxy_call_get_type
-OAUTH2_PROXY_CALL_CLASS
-OAUTH2_IS_PROXY_CALL_CLASS
-OAUTH2_PROXY_CALL_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>rest-proxy</FILE>
-<TITLE>RestProxy</TITLE>
-RestProxy
-RestProxyClass
-REST_PROXY_ERROR
-RestProxyError
-rest_proxy_new
-rest_proxy_bind
-rest_proxy_bind_valist
-rest_proxy_set_user_agent
-rest_proxy_get_user_agent
-rest_proxy_add_soup_feature
-rest_proxy_new_call
-rest_proxy_simple_run
-rest_proxy_simple_run_valist
-<SUBSECTION Standard>
-REST_PROXY
-REST_IS_PROXY
-REST_TYPE_PROXY
-rest_proxy_get_type
-REST_PROXY_CLASS
-REST_IS_PROXY_CLASS
-REST_PROXY_GET_CLASS
-rest_proxy_error_quark
-</SECTION>
-
-<SECTION>
-<FILE>oauth-proxy-call</FILE>
-<TITLE>OAuthProxyCall</TITLE>
-OAuthProxyCall
-oauth_proxy_call_parse_token_response
-<SUBSECTION Standard>
-OAuthProxyCallClass
-OAUTH_PROXY_CALL
-OAUTH_IS_PROXY_CALL
-OAUTH_TYPE_PROXY_CALL
-oauth_proxy_call_get_type
-OAUTH_PROXY_CALL_CLASS
-OAUTH_IS_PROXY_CALL_CLASS
-OAUTH_PROXY_CALL_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>oauth-proxy</FILE>
-<TITLE>OAuthProxy</TITLE>
-OAuthProxy
-OAuthSignatureMethod
-oauth_proxy_new
-oauth_proxy_new_echo_proxy
-oauth_proxy_new_with_token
-OAuthProxyAuthCallback
-oauth_proxy_auth_step
-oauth_proxy_auth_step_async
-oauth_proxy_request_token
-oauth_proxy_request_token_async
-oauth_proxy_is_oauth10a
-oauth_proxy_access_token
-oauth_proxy_access_token_async
-oauth_proxy_get_token
-oauth_proxy_set_token
-oauth_proxy_get_token_secret
-oauth_proxy_set_token_secret
-oauth_proxy_get_signature_host
-oauth_proxy_set_signature_host
-<SUBSECTION Standard>
-OAuthProxyPrivate
-OAuthProxyClass
-OAUTH_PROXY
-OAUTH_IS_PROXY
-OAUTH_TYPE_PROXY
-oauth_proxy_get_type
-OAUTH_PROXY_CLASS
-OAUTH_IS_PROXY_CLASS
-OAUTH_PROXY_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>rest-params</FILE>
-<TITLE>RestParams</TITLE>
-RestParams
-RestParamsIter
-rest_params_new
-rest_params_free
-rest_params_add
-rest_params_get
-rest_params_remove
-rest_params_are_strings
-rest_params_as_string_hash_table
-rest_params_iter_init
-rest_params_iter_next
-</SECTION>
-
-<SECTION>
-<FILE>rest-param</FILE>
-<TITLE>RestParam</TITLE>
-RestMemoryUse
-RestParam
-rest_param_new_string
-rest_param_new_full
-rest_param_new_with_owner
-rest_param_is_string
-rest_param_get_name
-rest_param_get_content_type
-rest_param_get_file_name
-rest_param_get_content
-rest_param_get_content_length
-rest_param_ref
-rest_param_unref
-</SECTION>
-
-<SECTION>
-<FILE>flickr-proxy-call</FILE>
-<TITLE>FlickrProxyCall</TITLE>
-FlickrProxyCall
-<SUBSECTION Standard>
-FlickrProxyCallClass
-FLICKR_PROXY_CALL
-FLICKR_IS_PROXY_CALL
-FLICKR_TYPE_PROXY_CALL
-flickr_proxy_call_get_type
-FLICKR_PROXY_CALL_CLASS
-FLICKR_IS_PROXY_CALL_CLASS
-FLICKR_PROXY_CALL_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>flickr-proxy</FILE>
-<TITLE>FlickrProxy</TITLE>
-FlickrProxy
-FLICKR_PROXY_ERROR
-flickr_proxy_new
-flickr_proxy_new_with_token
-flickr_proxy_get_api_key
-flickr_proxy_get_shared_secret
-flickr_proxy_get_token
-flickr_proxy_set_token
-flickr_proxy_sign
-flickr_proxy_build_login_url
-flickr_proxy_is_successful
-flickr_proxy_new_upload
-flickr_proxy_new_upload_for_file
-<SUBSECTION Standard>
-FlickrProxyClass
-FlickrProxyPrivate
-FLICKR_PROXY
-FLICKR_IS_PROXY
-FLICKR_TYPE_PROXY
-flickr_proxy_get_type
-FLICKR_PROXY_CLASS
-FLICKR_IS_PROXY_CLASS
-FLICKR_PROXY_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>lastfm-proxy-call</FILE>
-<TITLE>LastfmProxyCall</TITLE>
-LastfmProxyCall
-<SUBSECTION Standard>
-LastfmProxyCallClass
-LASTFM_PROXY_CALL
-LASTFM_IS_PROXY_CALL
-LASTFM_TYPE_PROXY_CALL
-lastfm_proxy_call_get_type
-LASTFM_PROXY_CALL_CLASS
-LASTFM_IS_PROXY_CALL_CLASS
-LASTFM_PROXY_CALL_GET_CLASS
-</SECTION>
-
-<SECTION>
-<FILE>lastfm-proxy</FILE>
-<TITLE>LastfmProxy</TITLE>
-LastfmProxy
-LASTFM_PROXY_ERROR
-lastfm_proxy_new
-lastfm_proxy_new_with_session
-lastfm_proxy_get_api_key
-lastfm_proxy_get_secret
-lastfm_proxy_get_session_key
-lastfm_proxy_set_session_key
-lastfm_proxy_sign
-lastfm_proxy_build_login_url
-lastfm_proxy_is_successful
-<SUBSECTION Standard>
-LastfmProxyClass
-LastfmProxyPrivate
-LASTFM_PROXY
-LASTFM_IS_PROXY
-LASTFM_TYPE_PROXY
-lastfm_proxy_get_type
-LASTFM_PROXY_CLASS
-LASTFM_IS_PROXY_CLASS
-LASTFM_PROXY_GET_CLASS
-</SECTION>
diff --git a/docs/reference/rest/rest.types b/docs/reference/rest/rest.types
deleted file mode 100644
index 97a392c..0000000
--- a/docs/reference/rest/rest.types
+++ /dev/null
@@ -1,12 +0,0 @@
-flickr_proxy_call_get_type
-flickr_proxy_get_type
-lastfm_proxy_call_get_type
-lastfm_proxy_get_type
-oauth2_proxy_call_get_type
-oauth2_proxy_get_type
-oauth_proxy_call_get_type
-oauth_proxy_get_type
-rest_proxy_call_get_type
-rest_proxy_get_type
-rest_xml_node_get_type
-rest_xml_parser_get_type
diff --git a/examples/Makefile.am b/examples/Makefile.am
deleted file mode 100644
index 4f68e7c..0000000
--- a/examples/Makefile.am
+++ /dev/null
@@ -1,13 +0,0 @@
-noinst_PROGRAMS = test-raw test-xml dump-xml post-twitter post-twitter-media get-flickr-favorites lastfm-shout continuous-twitter
-
-AM_CFLAGS = $(GLIB_CFLAGS) $(GTHREAD_CFLAGS) $(SOUP_CFLAGS) -I$(top_srcdir)
-AM_LDFLAGS = $(GLIB_LIBS) $(GTHREAD_LIBS) $(SOUP_LIBS) ../rest/librest-@API_VERSION@.la ../rest-extras/librest-extras-@API_VERSION@.la
-
-test_raw_SOURCES = test-raw.c
-test_xml_SOURCES = test-xml.c
-dump_xml_SOURCES = dump-xml.c
-post_twitter_SOURCES = post-twitter.c
-post_twitter_media_SOURCES = post-twitter-media.c
-get_flickr_favorites_SOURCES = get-flickr-favorites.c
-lastfm_shout_SOURCES = lastfm-shout.c
-continuous_twitter_SOURCES = continuous-twitter.c
diff --git a/examples/gitlab-oauth2-example.c b/examples/gitlab-oauth2-example.c
new file mode 100644
index 0000000..f18cbab
--- /dev/null
+++ b/examples/gitlab-oauth2-example.c
@@ -0,0 +1,148 @@
+/* gitlab-oauth2-example.c
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/**
+ * This example shows the recommended PKCE authorization flow for Gitlab.
+ */
+
+#include <glib.h>
+#include <rest/rest.h>
+#include <stdio.h>
+#include <libsoup/soup.h>
+
+GMainLoop *loop;
+
+static void
+load_projects (RestProxy *proxy)
+{
+  g_autoptr(GError) error = NULL;
+  RestProxyCall *call;
+
+  call = rest_proxy_new_call (proxy);
+  rest_proxy_call_set_method (call, "GET");
+  rest_proxy_call_set_function (call, "projects/426/issues");
+  rest_proxy_call_sync (call, &error);
+
+  g_print ("%s\n", rest_proxy_call_get_payload (call));
+  g_main_loop_quit (loop);
+}
+
+static void
+gitlab_oauth2_example_refreshed_access_token (GObject      *object,
+                                              GAsyncResult *result,
+                                              gpointer      user_data)
+{
+  RestOAuth2Proxy *oauth2_proxy = (RestOAuth2Proxy *)object;
+  g_autoptr(GError) error = NULL;
+
+  g_assert (G_IS_OBJECT (object));
+  g_assert (G_IS_ASYNC_RESULT (result));
+
+  rest_oauth2_proxy_refresh_access_token_finish (oauth2_proxy, result, &error);
+  if (error)
+    g_error ("%s", error->message);
+
+  g_print ("Access Token: %s\n", rest_oauth2_proxy_get_access_token (oauth2_proxy));
+  g_print ("Refresh Token: %s\n", rest_oauth2_proxy_get_refresh_token (oauth2_proxy));
+  GDateTime *expiration_date = rest_oauth2_proxy_get_expiration_date (oauth2_proxy);
+  if (expiration_date)
+    g_print ("Expires in: %s\n", g_date_time_format (expiration_date, "%X %x"));
+
+  load_projects (REST_PROXY (oauth2_proxy));
+}
+
+static void
+gitlab_oauth2_example_fetched_access_token (GObject      *object,
+                                            GAsyncResult *result,
+                                            gpointer      user_data)
+{
+  RestOAuth2Proxy *oauth2_proxy = (RestOAuth2Proxy *)object;
+  g_autoptr(GError) error = NULL;
+
+  g_assert (G_IS_OBJECT (object));
+  g_assert (G_IS_ASYNC_RESULT (result));
+
+  rest_oauth2_proxy_fetch_access_token_finish (oauth2_proxy, result, &error);
+  if (error)
+    g_error ("%s", error->message);
+
+  g_print ("Access Token: %s\n", rest_oauth2_proxy_get_access_token (oauth2_proxy));
+  g_print ("Refresh Token: %s\n", rest_oauth2_proxy_get_refresh_token (oauth2_proxy));
+  GDateTime *expiration_date = rest_oauth2_proxy_get_expiration_date (oauth2_proxy);
+  if (expiration_date)
+    g_print ("Expires in: %s\n", g_date_time_format (expiration_date, "%X %x"));
+
+  /* refresh token */
+  rest_oauth2_proxy_refresh_access_token_async (oauth2_proxy, NULL, gitlab_oauth2_example_refreshed_access_token, user_data);
+}
+
+gint
+main (gint   argc,
+      gchar *argv[])
+{
+  g_autofree gchar *line = NULL;
+  size_t len = 0;
+
+  gchar **environment = g_get_environ ();
+  gchar *authurl = "https://gitlab.gnome.org/oauth/authorize";
+  gchar *tokenurl = "https://gitlab.gnome.org/oauth/token";
+  gchar *redirecturl = "http://example.com";
+  gchar *baseurl = "https://gitlab.gnome.org/api/v4/";
+  const gchar *clientid = g_environ_getenv (environment, "REST_OAUTH2_CLIENT_ID");
+  if (!clientid)
+    {
+      g_print ("You have to define your Gitlab Client ID as REST_OAUTH2_CLIENT_ID environment variable\n");
+      return EXIT_SUCCESS;
+    }
+
+  const gchar *clientsecret = g_environ_getenv (environment, "REST_OAUTH2_CLIENT_SECRET");
+  if (!clientsecret)
+    {
+      g_print ("You have to define your Gitlab Client Secret as REST_OAUTH2_CLIENT_SECRET environment variable\n");
+      return EXIT_SUCCESS;
+    }
+  RestPkceCodeChallenge *pkce = rest_pkce_code_challenge_new_random ();
+  gchar *state = NULL;
+
+#ifdef WITH_SOUP_2
+  SoupLogger *logger = soup_logger_new (SOUP_LOGGER_LOG_HEADERS, -1);
+#else
+  SoupLogger *logger = soup_logger_new (SOUP_LOGGER_LOG_HEADERS);
+#endif
+
+  RestOAuth2Proxy *oauth2_proxy = rest_oauth2_proxy_new (authurl, tokenurl, redirecturl, clientid, clientsecret, baseurl);
+  rest_proxy_add_soup_feature (REST_PROXY (oauth2_proxy), SOUP_SESSION_FEATURE (logger));
+  const gchar *authorize_url = rest_oauth2_proxy_build_authorization_url (oauth2_proxy, rest_pkce_code_challenge_get_challenge (pkce), NULL, &state);
+
+  g_print ("URL to authorize: %s\n", authorize_url);
+
+  ssize_t chars = getline (&line, &len, stdin);
+  if (line[chars - 1] == '\n') {
+    line[chars - 1] = '\0';
+  }
+
+  g_print ("Got Authorization Grant: %s\n", line);
+
+  /* fetch access token */
+  rest_oauth2_proxy_fetch_access_token_async (oauth2_proxy, line, rest_pkce_code_challenge_get_verifier (pkce), NULL, gitlab_oauth2_example_fetched_access_token, NULL);
+
+  loop = g_main_loop_new (NULL, FALSE);
+  g_main_loop_run (loop);
+
+  return 0;
+}
diff --git a/examples/meson.build b/examples/meson.build
index 7d16dc7..375a72a 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -7,6 +7,7 @@ example_names = [
   'get-flickr-favorites',
   'lastfm-shout',
   'continuous-twitter',
+  'gitlab-oauth2-example',
 ]
 
 example_deps = [
diff --git a/meson.build b/meson.build
index 81c5ed1..4fd3195 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project('rest', 'c',
   version: '0.9.0',
   license: 'LGPL2.1+',
-  meson_version: '>= 0.49',
+  meson_version: '>= 0.53',
 )
 
 # Versioning
@@ -57,6 +57,7 @@ endif
 glib_dep = dependency('glib-2.0', version: '>= 2.44')
 gobject_dep = dependency('gobject-2.0', version: '>= 2.44')
 libsoup_dep = dependency(libsoup_name, version: libsoup_req_version)
+libjson_glib_dep = dependency('json-glib-1.0')
 libxml_dep = dependency('libxml-2.0')
 
 # config.h
@@ -73,7 +74,9 @@ config_h_inc = include_directories('.')
 # Subdirectories
 subdir('rest')
 subdir('rest-extras')
-subdir('tests')
+if get_option('tests')
+  subdir('tests')
+endif
 if get_option('examples')
   subdir('examples')
 endif
@@ -87,7 +90,7 @@ pkgconfig.generate(librest_lib,
   filebase: librest_pkg_string,
   description: 'RESTful web api query library',
   subdirs: librest_pkg_string,
-  requires: [ glib_dep, libsoup_dep, libxml_dep, ],
+  requires: [ glib_dep, libsoup_dep, libxml_dep, libjson_glib_dep ],
   variables: [
     'apiversion=@0@'.format(librest_api_version),
   ],
@@ -98,8 +101,25 @@ pkgconfig.generate(librest_extras_lib,
   filebase: librest_extras_pkg_string,
   description: 'RESTful web api query library',
   subdirs: librest_pkg_string,
-  requires: [ glib_dep, libsoup_dep, libxml_dep, ],
+  requires: [ glib_dep, libsoup_dep, libxml_dep],
   variables: [
     'apiversion=@0@'.format(librest_api_version),
   ],
 )
+
+summary({
+    'prefix': get_option('prefix'),
+    'libdir': get_option('prefix') / get_option('libdir'),
+  },
+  section: 'Directories',
+)
+
+summary({
+    'Introspection': get_option('introspection'),
+    'Documentation': get_option('gtk_doc'),
+    'Tests': get_option('tests'),
+    'Soup 2': get_option('soup2'),
+  },
+  section: 'Build',
+  bool_yn: true,
+)
diff --git a/meson_options.txt b/meson_options.txt
index 49f7a2d..83e5d2f 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -20,7 +20,7 @@ option('examples',
 )
 option('gtk_doc',
   type: 'boolean',
-  value: false,
+  value: true,
   description: 'Build the gtk-doc reference docs',
 )
 option('soup2',
@@ -28,3 +28,8 @@ option('soup2',
   value: true,
   description: 'Whether to build with libsoup2',
 )
+option('tests',
+  type: 'boolean',
+  value: true,
+  description: 'Whether to build the tests',
+)
diff --git a/rest-extras/Makefile.am b/rest-extras/Makefile.am
deleted file mode 100644
index c7dd606..0000000
--- a/rest-extras/Makefile.am
+++ /dev/null
@@ -1,79 +0,0 @@
-CLEANFILES =
-
-lib_sources = \
-		     flickr-proxy.c	\
-		     flickr-proxy-call.c	\
-		     flickr-proxy-private.h \
-		     lastfm-proxy.c	\
-		     lastfm-proxy-call.c	\
-		     lastfm-proxy-private.h \
-		     youtube-proxy.c \
-		     youtube-proxy-private.h
-lib_headers = \
-		     flickr-proxy.h	\
-		     flickr-proxy-call.h \
-		     lastfm-proxy.h	\
-		     lastfm-proxy-call.h \
-		     youtube-proxy.h
-
-
-lib_LTLIBRARIES = librest-extras-@API_VERSION@.la
-librest_extras_@API_VERSION@_la_CFLAGS = $(GLIB_CFLAGS) $(GTHREAD_CFLAGS) \
-		    $(SOUP_CFLAGS) $(SOUP_GNOME_CFLAGS) \
-		    $(XML_CFLAGS) $(GCOV_CFLAGS) \
-		    -I$(top_srcdir) -Wall -DG_LOG_DOMAIN=\"Rest\"
-librest_extras_@API_VERSION@_la_LIBADD = $(GLIB_LIBS) $(GTHREAD_LIBS) \
-                    $(SOUP_LIBS) $(SOUP_GNOME_LIBS) $(XML_LIBS) \
-		    $(GCOV_LDFLAGS) \
-                    $(top_builddir)/rest/librest-@API_VERSION@.la
-librest_extras_@API_VERSION@_la_LDFLAGS = -no-undefined
-librest_extras_@API_VERSION@_la_SOURCES = $(lib_sources) $(lib_headers)
-librest_extras_@API_VERSION@_la_HEADERS = $(lib_headers)
-librest_extras_@API_VERSION@_ladir = $(includedir)/rest-@API_VERSION@/rest-extras
-
-
-# Test suite
-TESTS = test-runner
-check_PROGRAMS = test-runner
-
-test_runner_SOURCES = test-runner.c $(lib_sources) $(lib_headers)
-test_runner_CFLAGS = -DBUILD_TESTS $(librest_extras_@API_VERSION@_la_CFLAGS) $(GCOV_CFLAGS)
-test_runner_LDFLAGS = $(librest_extras_@API_VERSION@_la_LIBADD) $(GCOV_LIBS)
-
-# TODO: use gtester
-
-# intospection
--include $(INTROSPECTION_MAKEFILE)
-
-if HAVE_INTROSPECTION
-INTROSPECTION_GIRS = RestExtras-@API_VERSION@.gir
-
-# need to include ../rest when scanning/compiling
-INTROSPECTION_SCANNER_ARGS = --add-include-path=$(top_builddir)/rest --identifier-prefix=
-INTROSPECTION_COMPILER_ARGS = --includedir=$(top_builddir)/rest
-
-REST_EXTRAS_CINCLUDES=$(patsubst %,--c-include='rest/%',$(shell echo $(lib_headers)))
-INTROSPECTION_SCANNER_ARGS += $(REST_EXTRAS_CINCLUDES)
-
-RestExtras-@API_VERSION@.gir: librest-extras-@API_VERSION@.la Makefile
-
-RestExtras_@API_VERSION_AM@_gir_NAMESPACE = RestExtras
-RestExtras_@API_VERSION_AM@_gir_VERSION = @API_VERSION@
-RestExtras_@API_VERSION_AM@_gir_LIBS = librest-extras-@API_VERSION@.la
-RestExtras_@API_VERSION_AM@_gir_FILES = \
-	$(lib_headers) \
-	$(filter-out %private.h, $(lib_sources))
-RestExtras_@API_VERSION_AM@_gir_CFLAGS = -I$(top_srcdir)
-RestExtras_@API_VERSION_AM@_gir_INCLUDES = GObject-2.0 libxml2-2.0
-RestExtras_@API_VERSION_AM@_gir_PACKAGES = gobject-2.0 libsoup-2.4 libxml-2.0
-RestExtras_@API_VERSION_AM@_gir_SCANNERFLAGS = --include-uninstalled=$(top_builddir)/rest/Rest-@API_VERSION@.gir --accept-unprefixed --warn-all
-RestExtras_@API_VERSION_AM@_gir_EXPORT_PACKAGES = rest-extras-@API_VERSION@
-
-girdir = $(datadir)/gir-1.0
-dist_gir_DATA = $(INTROSPECTION_GIRS)
-
-typelibsdir = $(libdir)/girepository-1.0/
-typelibs_DATA = $(INTROSPECTION_GIRS:.gir=.typelib)
-
-CLEANFILES += $(dist_gir_DATA) $(typelibs_DATA)
-endif # HAVE_INTROSPECTION
diff --git a/rest-extras/flickr-proxy.c b/rest-extras/flickr-proxy.c
index 7726359..91403d9 100644
--- a/rest-extras/flickr-proxy.c
+++ b/rest-extras/flickr-proxy.c
@@ -328,7 +328,7 @@ flickr_proxy_build_login_url (FlickrProxy *proxy,
                      NULL,
                      "flickr.com",
                      -1,
-                     "services/auth/",
+                     "/services/auth/",
                      query,
                      NULL);
 
diff --git a/rest/Makefile.am b/rest/Makefile.am
deleted file mode 100644
index 64205d4..0000000
--- a/rest/Makefile.am
+++ /dev/null
@@ -1,139 +0,0 @@
-CLEANFILES =
-
-# For some reason I can't use $(librest_@API_VERSION@_la_SOURCES) in
-# test_runner_SOURCES, so we have to do this
-lib_sources = \
-	rest-param.c			\
-	rest-params.c			\
-	rest-proxy.c 			\
-	rest-proxy-auth.c		\
-	rest-proxy-auth-private.h	\
-	rest-proxy-call.c		\
-	rest-proxy-call-private.h	\
-	rest-xml-node.c			\
-	rest-xml-parser.c		\
-	rest-main.c			\
-	rest-private.h			\
-	rest-enum-types.c		\
-	oauth-proxy.c			\
-	oauth-proxy-call.c		\
-	oauth-proxy-private.h 		\
-	oauth2-proxy.c			\
-	oauth2-proxy-call.c		\
-	oauth2-proxy-private.h 		\
-	sha1.c				\
-	sha1.h
-nodist_lib_sources = \
-	rest-marshal.h		\
-	rest-marshal.c
-lib_headers = \
-	rest-param.h		\
-	rest-params.h		\
-	rest-proxy.h		\
-	rest-proxy-auth.h	\
-	rest-proxy-call.h	\
-	rest-enum-types.h	\
-	oauth-proxy.h		\
-	oauth-proxy-call.h	\
-	oauth2-proxy.h		\
-	oauth2-proxy-call.h	\
-	rest-xml-node.h		\
-	rest-xml-parser.h
-
-EXTRA_DIST = \
-	rest-marshal.txt
-
-lib_LTLIBRARIES = librest-@API_VERSION@.la
-librest_@API_VERSION@_la_CFLAGS = $(GLIB_CFLAGS) $(GTHREAD_CFLAGS) \
-		    $(SOUP_CFLAGS) $(SOUP_GNOME_CFLAGS) \
-		    $(XML_CFLAGS) $(GCOV_CFLAGS) \
-		    -I$(top_srcdir) -Wall -DG_LOG_DOMAIN=\"Rest\"
-librest_@API_VERSION@_la_LDFLAGS = -no-undefined
-librest_@API_VERSION@_la_LIBADD = $(GLIB_LIBS) $(GTHREAD_LIBS) \
-                    $(SOUP_LIBS) $(SOUP_GNOME_LIBS) $(XML_LIBS) \
-		    $(GCOV_LDFLAGS)
-librest_@API_VERSION@_la_SOURCES = $(lib_sources) $(lib_headers)
-nodist_librest_@API_VERSION@_la_SOURCES = $(nodist_lib_sources)
-librest_@API_VERSION@_la_HEADERS = $(lib_headers)
-librest_@API_VERSION@_ladir = $(includedir)/rest-@API_VERSION@/rest
-
-rest-enum-types.h: stamp-rest-enum-types.h
-	@true
-
-stamp-rest-enum-types.h: rest-proxy.h rest-proxy-call.h Makefile
-	$(AM_V_GEN) (cd $(srcdir) && $(GLIB_MKENUMS) \
-			--fhead "#ifndef __REST_ENUM_TYPES_H__\n#define __REST_ENUM_TYPES_H__\n\n#include <glib-object.h>\n\nG_BEGIN_DECLS\n" \
-			--fprod "/* enumerations from \"@filename@\" */\n" \
-			--vhead "GType @enum_name@_get_type (void) G_GNUC_CONST;\n#define REST_TYPE_@ENUMSHORT@ (@enum_name@_get_type())\n" \
-			--ftail "G_END_DECLS\n\n#endif /* __REST_ENUM_TYPES_H__ */" rest-proxy.h rest-proxy-call.h) >> xgen-gtbh \
-	&& (cmp -s xgen-gtbh rest-enum-types.h || cp xgen-gtbh rest-enum-types.h ) \
-	&& rm -f xgen-gtbh \
-	&& echo timestamp > $(@F)
-
-rest-enum-types.c: rest-proxy.h rest-proxy-call.h Makefile rest-enum-types.h
-	$(AM_V_GEN) (cd $(srcdir) && $(GLIB_MKENUMS) \
-			--fhead "#include \"rest-proxy.h\"\n#include \"rest-proxy-call.h\"\n#include \"rest-enum-types.h\"" \
-			--fprod "\n/* enumerations from \"@filename@\" */" \
-			--vhead "GType\n@enum_name@_get_type (void)\n{\n  static GType etype = 0;\n  if (etype == 0) {\n    static const G@Type@Value values[] = {" \
-			--vprod "      { @VALUENAME@, \"@VALUENAME@\", \"@valuenick@\" }," \
-			--vtail "      { 0, NULL, NULL }\n    };\n    etype = g_@type@_register_static (\"@EnumName@\", values);\n  }\n  return etype;\n}\n" \
-		rest-proxy.h rest-proxy-call.h) > xgen-gtbc \
-	&& cp xgen-gtbc rest-enum-types.c  \
-	&& rm -f xgen-gtbc
-
-BUILT_SOURCES = rest-marshal.c rest-marshal.h
-
-rest-marshal.c: rest-marshal.txt
-	$(AM_V_GEN)echo "#include \"rest-marshal.h\"" > $@ && \
-		glib-genmarshal --body $< >> $@ || (rm -f $@ && exit 1)
-
-rest-marshal.h: rest-marshal.txt
-	$(AM_V_GEN)glib-genmarshal --header $< > $@ || (rm -f $@ && exit 1)
-
-
-# Test suite
-TESTS = test-runner
-check_PROGRAMS = test-runner
-
-test_runner_SOURCES = test-runner.c $(lib_sources) $(nodist_lib_sources) $(lib_headers)
-test_runner_CFLAGS = -DBUILD_TESTS $(librest_@API_VERSION@_la_CFLAGS) $(GCOV_CFLAGS)
-test_runner_LDFLAGS = $(librest_@API_VERSION@_la_LIBADD) $(GCOV_LDFLAGS)
-
-# TODO: use gtester
-
-# introspection
--include $(INTROSPECTION_MAKEFILE)
-
-if HAVE_INTROSPECTION
-INTROSPECTION_GIRS = Rest-@API_VERSION@.gir
-
-Rest-@API_VERSION@.gir: librest-@API_VERSION@.la Makefile
-
-Rest_@API_VERSION_AM@_gir_NAMESPACE = Rest
-Rest_@API_VERSION_AM@_gir_VERSION = @API_VERSION@
-Rest_@API_VERSION_AM@_gir_LIBS = librest-@API_VERSION@.la
-Rest_@API_VERSION_AM@_gir_FILES = \
-	$(lib_headers) \
-	$(filter-out %private.h, $(lib_sources))
-Rest_@API_VERSION_AM@_gir_CFLAGS = -I$(top_srcdir)
-Rest_@API_VERSION_AM@_gir_INCLUDES = GObject-2.0 Gio-2.0 Soup-2.4
-Rest_@API_VERSION_AM@_gir_PACKAGES = gobject-2.0 libsoup-2.4 libxml-2.0 gio-2.0
-Rest_@API_VERSION_AM@_gir_SCANNERFLAGS = --accept-unprefixed --warn-all
-Rest_@API_VERSION_AM@_gir_EXPORT_PACKAGES = rest-@API_VERSION@
-REST_CINCLUDES=$(patsubst %,--c-include='rest/%',$(shell echo $(lib_headers)))
-INTROSPECTION_SCANNER_ARGS = $(REST_CINCLUDES)
-
-girdir = $(datadir)/gir-1.0
-dist_gir_DATA = $(INTROSPECTION_GIRS)
-
-typelibsdir = $(libdir)/girepository-1.0/
-typelibs_DATA = $(INTROSPECTION_GIRS:.gir=.typelib)
-
-CLEANFILES += $(dist_gir_DATA) \
-	$(typelibs_DATA) \
-	rest-enum-types.h \
-	rest-enum-types.c \
-	stamp-rest-enum-types.h \
-	$(NULL)
-
-endif # HAVE_INTROSPECTION
diff --git a/rest/meson.build b/rest/meson.build
index 396ec83..a22742e 100644
--- a/rest/meson.build
+++ b/rest/meson.build
@@ -19,10 +19,13 @@ librest_sources = [
   'rest-main.c',
   'oauth-proxy.c',
   'oauth-proxy-call.c',
-  'oauth2-proxy.c',
-  'oauth2-proxy-call.c',
   'sha1.c',
 
+  'rest-oauth2-proxy.c',
+  'rest-oauth2-proxy-call.c',
+  'rest-pkce-code-challenge.c',
+  'rest-utils.c',
+
   librest_enums,
   librest_marshal,
 ]
@@ -30,8 +33,6 @@ librest_sources = [
 librest_headers = [
   'oauth-proxy-call.h',
   'oauth-proxy.h',
-  'oauth2-proxy-call.h',
-  'oauth2-proxy.h',
   'rest-param.h',
   'rest-params.h',
   'rest-proxy-auth.h',
@@ -39,11 +40,18 @@ librest_headers = [
   'rest-proxy.h',
   'rest-xml-node.h',
   'rest-xml-parser.h',
+
+  'rest-oauth2-proxy.h',
+  'rest-oauth2-proxy-call.h',
+  'rest-pkce-code-challenge.h',
+  'rest-utils.h',
+  'rest.h',
 ]
 
 librest_deps = [
   glib_dep,
   libsoup_dep,
+  libjson_glib_dep,
   libxml_dep,
 ]
 
@@ -65,6 +73,8 @@ install_headers(librest_headers,
   subdir: librest_pkg_string / 'rest',
 )
 
+rest_dep_sources = []
+
 # GObject Introspection
 if get_option('introspection')
   librest_gir_extra_args = [
@@ -77,17 +87,25 @@ if get_option('introspection')
   endforeach
 
   librest_gir = gnome.generate_gir(librest_lib,
-    sources: [ librest_headers, librest_enums[1] ],
+    sources: [ librest_headers, librest_sources, librest_enums[1] ],
+    dependencies: librest_deps,
     namespace: 'Rest',
+    identifier_prefix: 'Rest',
+    symbol_prefix: 'rest',
     nsversion: librest_api_version,
     includes: [ 'GObject-2.0', 'Gio-2.0', 'Soup-@0@'.format(libsoup_api_version) ],
     extra_args: librest_gir_extra_args,
     install: true,
   )
+
+  rest_dep_sources += librest_gir
 endif
 
 librest_dep = declare_dependency(
+  sources: rest_dep_sources,
   link_with: librest_lib,
+  include_directories: include_directories('..'),
+  dependencies: librest_deps,
 )
 
 # Test suite
diff --git a/rest/oauth2-proxy-call.c b/rest/oauth2-proxy-call.c
deleted file mode 100644
index 2d71b45..0000000
--- a/rest/oauth2-proxy-call.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * librest - RESTful web services access
- * Copyright (c) 2008, 2009, Intel Corporation.
- *
- * Authors: Rob Bradford <rob@linux.intel.com>
- *          Ross Burton <ross@linux.intel.com>
- *          Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU Lesser General Public License,
- * version 2.1, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
- * more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#include <string.h>
-#include <libsoup/soup.h>
-#include <rest/rest-proxy-call.h>
-#include "oauth2-proxy-call.h"
-#include "oauth2-proxy-private.h"
-#include "sha1.h"
-
-G_DEFINE_TYPE (OAuth2ProxyCall, oauth2_proxy_call, REST_TYPE_PROXY_CALL)
-
-static gboolean
-_prepare (RestProxyCall *call, GError **error)
-{
-  OAuth2Proxy *proxy = NULL;
-  gboolean result = TRUE;
-
-  g_object_get (call, "proxy", &proxy, NULL);
-
-  if (!proxy->priv->access_token) {
-    g_set_error (error,
-                 REST_PROXY_CALL_ERROR,
-                 REST_PROXY_CALL_FAILED,
-                 "Missing access token, web service not properly authenticated");
-    result = FALSE;
-  } else {
-    rest_proxy_call_add_param (call, "access_token", proxy->priv->access_token);
-  }
-
-  g_object_unref (proxy);
-
-  return result;
-}
-
-static void
-oauth2_proxy_call_class_init (OAuth2ProxyCallClass *klass)
-{
-  RestProxyCallClass *call_class = REST_PROXY_CALL_CLASS (klass);
-
-  call_class->prepare = _prepare;
-}
-
-static void
-oauth2_proxy_call_init (OAuth2ProxyCall *self)
-{
-}
-
diff --git a/rest/oauth2-proxy-call.h b/rest/oauth2-proxy-call.h
deleted file mode 100644
index 805a501..0000000
--- a/rest/oauth2-proxy-call.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * librest - RESTful web services access
- * Copyright (c) 2008, 2009, Intel Corporation.
- *
- * Authors: Rob Bradford <rob@linux.intel.com>
- *          Ross Burton <ross@linux.intel.com>
- *          Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU Lesser General Public License,
- * version 2.1, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
- * more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#ifndef _OAUTH2_PROXY_CALL
-#define _OAUTH2_PROXY_CALL
-
-#include <rest/rest-proxy-call.h>
-
-G_BEGIN_DECLS
-
-#define OAUTH2_TYPE_PROXY_CALL oauth2_proxy_call_get_type()
-G_DECLARE_DERIVABLE_TYPE (OAuth2ProxyCall, oauth2_proxy_call, OAUTH2, PROXY_CALL, RestProxyCall)
-
-/**
- * OAuth2ProxyCall:
- *
- * #OAuth2ProxyCall has no publicly available members.
- */
-
-struct _OAuth2ProxyCallClass {
-  RestProxyCallClass parent_class;
-  /*< private >*/
-  /* padding for future expansion */
-  gpointer _padding_dummy[8];
-};
-
-G_END_DECLS
-
-#endif /* _OAUTH2_PROXY_CALL */
diff --git a/rest/oauth2-proxy.c b/rest/oauth2-proxy.c
deleted file mode 100644
index 3382f8b..0000000
--- a/rest/oauth2-proxy.c
+++ /dev/null
@@ -1,397 +0,0 @@
-/*
- * librest - RESTful web services access
- * Copyright (c) 2008, 2009, 2010 Intel Corporation.
- *
- * Authors: Rob Bradford <rob@linux.intel.com>
- *          Ross Burton <ross@linux.intel.com>
- *          Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU Lesser General Public License,
- * version 2.1, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
- * more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#include <rest/rest-proxy.h>
-#include <libsoup/soup.h>
-#include "oauth2-proxy.h"
-#include "oauth2-proxy-private.h"
-#include "oauth2-proxy-call.h"
-
-#define GET_PRIVATE(o) oauth2_proxy_get_instance_private(OAUTH2_PROXY(o))
-
-G_DEFINE_TYPE_WITH_PRIVATE (OAuth2Proxy, oauth2_proxy, REST_TYPE_PROXY)
-
-GQuark
-oauth2_proxy_error_quark (void)
-{
-    return g_quark_from_static_string ("rest-oauth2-proxy");
-}
-
-enum {
-  PROP_0,
-  PROP_CLIENT_ID,
-  PROP_AUTH_ENDPOINT,
-  PROP_ACCESS_TOKEN
-};
-
-static RestProxyCall *
-_new_call (RestProxy *proxy)
-{
-  RestProxyCall *call;
-
-  call = g_object_new (OAUTH2_TYPE_PROXY_CALL,
-                       "proxy", proxy,
-                       NULL);
-
-  return call;
-}
-
-static void
-oauth2_proxy_get_property (GObject *object, guint property_id,
-                              GValue *value, GParamSpec *pspec)
-{
-  OAuth2ProxyPrivate *priv = ((OAuth2Proxy*)object)->priv;
-
-  switch (property_id) {
-  case PROP_CLIENT_ID:
-    g_value_set_string (value, priv->client_id);
-    break;
-  case PROP_AUTH_ENDPOINT:
-    g_value_set_string (value, priv->auth_endpoint);
-    break;
-  case PROP_ACCESS_TOKEN:
-    g_value_set_string (value, priv->access_token);
-    break;
-  default:
-    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
-  }
-}
-
-static void
-oauth2_proxy_set_property (GObject *object, guint property_id,
-                              const GValue *value, GParamSpec *pspec)
-{
-  OAuth2ProxyPrivate *priv = ((OAuth2Proxy*)object)->priv;
-
-  switch (property_id) {
-  case PROP_CLIENT_ID:
-    if (priv->client_id)
-      g_free (priv->client_id);
-    priv->client_id = g_value_dup_string (value);
-    break;
-  case PROP_AUTH_ENDPOINT:
-    if (priv->auth_endpoint)
-      g_free (priv->auth_endpoint);
-    priv->auth_endpoint = g_value_dup_string (value);
-    break;
-  case PROP_ACCESS_TOKEN:
-    if (priv->access_token)
-      g_free (priv->access_token);
-    priv->access_token = g_value_dup_string (value);
-    break;
-  default:
-    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
-  }
-}
-
-static void
-oauth2_proxy_finalize (GObject *object)
-{
-  OAuth2ProxyPrivate *priv = ((OAuth2Proxy*)object)->priv;
-
-  g_free (priv->client_id);
-  g_free (priv->auth_endpoint);
-  g_free (priv->access_token);
-
-  G_OBJECT_CLASS (oauth2_proxy_parent_class)->finalize (object);
-}
-
-static void
-oauth2_proxy_class_init (OAuth2ProxyClass *klass)
-{
-  GObjectClass *object_class = G_OBJECT_CLASS (klass);
-  RestProxyClass *proxy_class = REST_PROXY_CLASS (klass);
-  GParamSpec *pspec;
-
-  object_class->get_property = oauth2_proxy_get_property;
-  object_class->set_property = oauth2_proxy_set_property;
-  object_class->finalize = oauth2_proxy_finalize;
-
-  proxy_class->new_call = _new_call;
-
-  pspec = g_param_spec_string ("client-id",  "client-id",
-                               "The client (application) id", NULL,
-                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY|G_PARAM_STATIC_STRINGS);
-  g_object_class_install_property (object_class,
-                                   PROP_CLIENT_ID,
-                                   pspec);
-
-  pspec = g_param_spec_string ("auth-endpoint",  "auth-endpoint",
-                               "The authentication endpoint url", NULL,
-                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY|G_PARAM_STATIC_STRINGS);
-  g_object_class_install_property (object_class,
-                                   PROP_AUTH_ENDPOINT,
-                                   pspec);
-
-  pspec = g_param_spec_string ("access-token",  "access-token",
-                               "The request or access token", NULL,
-                               G_PARAM_READWRITE|G_PARAM_STATIC_STRINGS);
-  g_object_class_install_property (object_class,
-                                   PROP_ACCESS_TOKEN,
-                                   pspec);
-}
-
-static void
-oauth2_proxy_init (OAuth2Proxy *proxy)
-{
-  proxy->priv = GET_PRIVATE (proxy);
-}
-
-/**
- * oauth2_proxy_new:
- * @client_id: the client (application) id
- * @auth_endpoint: the authentication endpoint URL
- * @url_format: the endpoint URL
- * @binding_required: whether the URL needs to be bound before calling
- *
- * Create a new #OAuth2Proxy for the specified endpoint @url_format, using the
- * specified API key and secret.
- *
- * This proxy won't have the Token set so will be unauthorised.  If the token is
- * unknown then the following steps should be taken to acquire an access token:
- * - Get the authentication url with oauth2_proxy_build_login_url()
- * - Display this url in an embedded browser widget
- * - wait for the browser widget to be redirected to the specified redirect_uri
- * - extract the token from the fragment of the redirected uri (using
- * convenience function oauth2_proxy_extract_access_token())
- * - set the token with oauth2_proxy_set_access_token()
- *
- * Set @binding_required to %TRUE if the URL contains string formatting
- * operations (for example "http://foo.com/%<!-- -->s".  These must be expanded
- * using rest_proxy_bind() before invoking the proxy.
- *
- * Returns: A new #OAuth2Proxy.
- */
-RestProxy *
-oauth2_proxy_new (const char *client_id,
-                  const char *auth_endpoint,
-                  const gchar *url_format,
-                  gboolean binding_required)
-{
-  return g_object_new (OAUTH2_TYPE_PROXY,
-                       "client-id", client_id,
-                       "auth-endpoint", auth_endpoint,
-                       "url-format", url_format,
-                       "binding-required", binding_required,
-                       NULL);
-}
-
-/**
- * oauth2_proxy_new_with_token:
- * @client_id: the client (application) id
- * @access_token: the Access Token
- * @auth_endpoint: the authentication endpoint URL
- * @url_format: the endpoint URL
- * @binding_required: whether the URL needs to be bound before calling
- *
- * Create a new #OAuth2Proxy for the specified endpoint @url_format, using the
- * specified client id
- *
- * @access_token is used for the Access Token, so if they are still valid then
- * this proxy is authorised.
- *
- * Set @binding_required to %TRUE if the URL contains string formatting
- * operations (for example "http://foo.com/%<!-- -->s".  These must be expanded
- * using rest_proxy_bind() before invoking the proxy.
- *
- * Returns: A new #OAuth2Proxy.
- */
-RestProxy *
-oauth2_proxy_new_with_token (const char *client_id,
-                            const char *access_token,
-                            const char *auth_endpoint,
-                            const gchar *url_format,
-                            gboolean binding_required)
-{
-  return g_object_new (OAUTH2_TYPE_PROXY,
-                       "client-id", client_id,
-                       "access-token", access_token,
-                       "auth-endpoint", auth_endpoint,
-                       "url-format", url_format,
-                       "binding-required", binding_required,
-                       NULL);
-}
-
-/* allocates a new string of the form "key=value" */
-static void
-append_query_param (gpointer key, gpointer value, gpointer user_data)
-{
-    GString *params = (GString*) user_data;
-    char *encoded_val, *encoded_key;
-    char *param;
-
-    encoded_val = g_uri_escape_string (value, NULL, TRUE);
-    encoded_key = g_uri_escape_string (key, NULL, TRUE);
-
-    param = g_strdup_printf ("%s=%s", encoded_key, encoded_val);
-    g_free (encoded_key);
-    g_free (encoded_val);
-
-    // if there's already a parameter in the string, we need to add a '&'
-    // separator before adding the new param
-    if (params->len)
-        g_string_append_c (params, '&');
-    g_string_append (params, param);
-}
-
-/**
- * oauth2_proxy_build_login_url_full:
- * @proxy: a OAuth2Proxy object
- * @redirect_uri: the uri to redirect to after the user authenticates
- * @extra_params: any extra parameters to add to the login url (e.g. facebook
- * uses 'scope=foo,bar' to request extended permissions).
- *
- * Builds a url at which the user can log in to the specified OAuth2-based web
- * service.  In general, this url should be displayed in an embedded browser
- * widget, and you should then intercept the browser's redirect to @redirect_uri
- * and extract the access token from the url fragment. After the access token
- * has been retrieved, call oauth2_proxy_set_access_token().  This must be done
- * before making any API calls to the service.
- *
- * See the oauth2 spec for more details about the "user-agent" authentication
- * flow.
- *
- * The @extra_params and @redirect_uri should not be uri-encoded, that will be
- * done automatically
- *
- * Returns: a newly allocated uri string
- */
-char *
-oauth2_proxy_build_login_url_full (OAuth2Proxy *proxy,
-                                   const char* redirect_uri,
-                                   GHashTable* extra_params)
-{
-    char *url;
-    GString *params = 0;
-    char *encoded_uri, *encoded_id;
-
-    g_return_val_if_fail (proxy, NULL);
-    g_return_val_if_fail (redirect_uri, NULL);
-
-    if (extra_params && g_hash_table_size (extra_params) > 0) {
-        params = g_string_new (NULL);
-        g_hash_table_foreach (extra_params, append_query_param, params);
-    }
-
-    encoded_uri = g_uri_escape_string (redirect_uri, NULL, TRUE);
-    encoded_id = g_uri_escape_string (proxy->priv->client_id, NULL, TRUE);
-
-    url = g_strdup_printf ("%s?client_id=%s&redirect_uri=%s&type=user_agent",
-                           proxy->priv->auth_endpoint, encoded_id,
-                           encoded_uri);
-
-    g_free (encoded_uri);
-    g_free (encoded_id);
-
-    if (params) {
-        char * full_url = g_strdup_printf ("%s&%s", url, params->str);
-        g_free (url);
-        url = full_url;
-        g_string_free (params, TRUE);
-    }
-
-    return url;
-}
-
-/**
- * oauth2_proxy_build_login_url:
- * @proxy: an OAuth2Proxy object
- * @redirect_uri: the uri to redirect to after the user authenticates
- *
- * Builds a url at which the user can log in to the specified OAuth2-based web
- * service.  See the documentation for oauth2_proxy_build_login_url_full() for
- * detailed information.
- *
- * Returns: a newly allocated uri string
- */
-char *
-oauth2_proxy_build_login_url (OAuth2Proxy *proxy,
-                              const char* redirect_uri)
-{
-    return oauth2_proxy_build_login_url_full (proxy, redirect_uri, NULL);
-}
-
-/**
- * oauth2_proxy_get_access_token:
- * @proxy: an #OAuth2Proxy
- *
- * Get the current request or access token.
- *
- * Returns: the token, or %NULL if there is no token yet.  This string is owned
- * by #OAuth2Proxy and should not be freed.
- */
-const char *
-oauth2_proxy_get_access_token (OAuth2Proxy *proxy)
-{
-  return proxy->priv->access_token;
-}
-
-/**
- * oauth2_proxy_set_access_token:
- * @proxy: an #OAuth2Proxy
- * @access_token: the access token
- *
- * Set the access token.
- */
-void
-oauth2_proxy_set_access_token (OAuth2Proxy *proxy, const char *access_token)
-{
-  g_return_if_fail (OAUTH2_IS_PROXY (proxy));
-
-  if (proxy->priv->access_token)
-    g_free (proxy->priv->access_token);
-
-  proxy->priv->access_token = g_strdup (access_token);
-}
-
-/**
- * oauth2_proxy_extract_access_token:
- * @url: the url which contains an access token in its fragment
- *
- * A utility function to extract the access token from the url that results from
- * the redirection after the user authenticates
- */
-char *
-oauth2_proxy_extract_access_token (const char *url)
-{
-  GHashTable *params;
-  char *token = NULL;
-  const char *fragment;
-  GUri *uri = g_uri_parse (url, G_URI_FLAGS_ENCODED, NULL);
-
-  fragment = g_uri_get_fragment (uri);
-  if (fragment != NULL) {
-    params = soup_form_decode (fragment);
-
-    if (params) {
-      char *encoded = g_hash_table_lookup (params, "access_token");
-      if (encoded)
-        token = g_uri_unescape_string (encoded, NULL);
-
-      g_hash_table_destroy (params);
-    }
-  }
-  g_uri_unref (uri);
-
-  return token;
-}
diff --git a/rest/oauth2-proxy.h b/rest/oauth2-proxy.h
deleted file mode 100644
index 0473c62..0000000
--- a/rest/oauth2-proxy.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * librest - RESTful web services access
- * Copyright (c) 2008, 2009, 2010 Intel Corporation.
- *
- * Authors: Rob Bradford <rob@linux.intel.com>
- *          Ross Burton <ross@linux.intel.com>
- *          Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU Lesser General Public License,
- * version 2.1, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
- * more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#ifndef _OAUTH2_PROXY
-#define _OAUTH2_PROXY
-
-#include <rest/rest-proxy.h>
-
-G_BEGIN_DECLS
-
-#define OAUTH2_TYPE_PROXY oauth2_proxy_get_type()
-
-#define OAUTH2_PROXY(obj) \
-  (G_TYPE_CHECK_INSTANCE_CAST ((obj), OAUTH2_TYPE_PROXY, OAuth2Proxy))
-
-#define OAUTH2_PROXY_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_CAST ((klass), OAUTH2_TYPE_PROXY, OAuth2ProxyClass))
-
-#define OAUTH2_IS_PROXY(obj) \
-  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), OAUTH2_TYPE_PROXY))
-
-#define OAUTH2_IS_PROXY_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_TYPE ((klass), OAUTH2_TYPE_PROXY))
-
-#define OAUTH2_PROXY_GET_CLASS(obj) \
-  (G_TYPE_INSTANCE_GET_CLASS ((obj), OAUTH2_TYPE_PROXY, OAuth2ProxyClass))
-
-typedef struct _OAuth2ProxyPrivate OAuth2ProxyPrivate;
-
-/**
- * OAuth2Proxy:
- *
- * #OAuth2Proxy has no publicly available members.
- */
-typedef struct {
-  RestProxy parent;
-  OAuth2ProxyPrivate *priv;
-} OAuth2Proxy;
-
-typedef struct {
-  RestProxyClass parent_class;
-  /*< private >*/
-  /* padding for future expansion */
-  gpointer _padding_dummy[8];
-} OAuth2ProxyClass;
-
-GType oauth2_proxy_get_type (void);
-
-RestProxy* oauth2_proxy_new (const char *client_id,
-                             const char *auth_endpoint,
-                             const gchar *url_format,
-                             gboolean binding_required);
-
-RestProxy* oauth2_proxy_new_with_token (const char *client_id,
-                                        const char *access_token,
-                                        const char *auth_endpoint,
-                                        const gchar *url_format,
-                                        gboolean binding_required);
-
-char * oauth2_proxy_build_login_url_full (OAuth2Proxy *proxy,
-                                          const char* redirect_uri,
-                                          GHashTable* extra_params);
-
-char * oauth2_proxy_build_login_url (OAuth2Proxy *proxy,
-                                     const char* redirect_uri);
-
-const char * oauth2_proxy_get_access_token (OAuth2Proxy *proxy);
-
-void oauth2_proxy_set_access_token (OAuth2Proxy *proxy, const char *access_token);
-
-char * oauth2_proxy_extract_access_token (const char *url);
-
-G_END_DECLS
-
-#endif /* _OAUTH2_PROXY */
diff --git a/rest/rest-oauth2-proxy-call.c b/rest/rest-oauth2-proxy-call.c
new file mode 100644
index 0000000..cbea6f5
--- /dev/null
+++ b/rest/rest-oauth2-proxy-call.c
@@ -0,0 +1,63 @@
+/* rest-oauth2-proxy-call.c
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "rest-oauth2-proxy-call.h"
+
+G_DEFINE_TYPE (RestOAuth2ProxyCall, rest_oauth2_proxy_call, REST_TYPE_PROXY_CALL)
+
+static gboolean
+rest_oauth2_proxy_call_prepare (RestProxyCall  *call,
+                                GError        **error)
+{
+  RestOAuth2ProxyCall *self = (RestOAuth2ProxyCall *)call;
+  RestOAuth2Proxy *proxy = NULL;
+  g_autoptr(GDateTime) now = NULL;
+  GDateTime *expiration_date = NULL;
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY_CALL (call), FALSE);
+
+  g_object_get (call, "proxy", &proxy, NULL);
+
+  now = g_date_time_new_now_local ();
+  expiration_date = rest_oauth2_proxy_get_expiration_date (proxy);
+
+  // access token expired -> refresh
+  if (g_date_time_compare (now, expiration_date) > 0)
+    {
+      g_set_error (error,
+                   REST_OAUTH2_ERROR,
+                   REST_OAUTH2_ERROR_ACCESS_TOKEN_EXPIRED,
+                   "Access token is expired");
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+static void
+rest_oauth2_proxy_call_class_init (RestOAuth2ProxyCallClass *klass)
+{
+  RestProxyCallClass *call_class = REST_PROXY_CALL_CLASS (klass);
+
+  call_class->prepare = rest_oauth2_proxy_call_prepare;
+}
+
+static void
+rest_oauth2_proxy_call_init (RestOAuth2ProxyCall *self)
+{
+}
diff --git a/rest/oauth2-proxy-private.h b/rest/rest-oauth2-proxy-call.h
index 565c1c3..fafc61f 100644
--- a/rest/oauth2-proxy-private.h
+++ b/rest/rest-oauth2-proxy-call.h
@@ -1,10 +1,6 @@
-/*
- * librest - RESTful web services access
- * Copyright (c) 2008, 2009, 2010 Intel Corporation.
+/* rest-oauth2-proxy-call.h
  *
- * Authors: Rob Bradford <rob@linux.intel.com>
- *          Ross Burton <ross@linux.intel.com>
- *          Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU Lesser General Public License,
@@ -18,17 +14,20 @@
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
  */
-#ifndef _OAUTH2_PROXY_PRIVATE
-#define _OAUTH2_PROXY_PRIVATE
 
-#include "oauth2-proxy.h"
+#pragma once
+
+#include <rest.h>
+
+G_BEGIN_DECLS
+
+#define REST_TYPE_OAUTH2_PROXY_CALL (rest_oauth2_proxy_call_get_type())
+
+G_DECLARE_DERIVABLE_TYPE (RestOAuth2ProxyCall, rest_oauth2_proxy_call, REST, OAUTH2_PROXY_CALL, RestProxyCall)
 
-struct _OAuth2ProxyPrivate {
-  char *client_id;
-  char *auth_endpoint;
-  char *access_token;
+struct _RestOAuth2ProxyCallClass {
+  RestProxyCallClass parent_class;
 };
 
-#endif /* _OAUTH2_PROXY_PRIVATE */
+G_END_DECLS
diff --git a/rest/rest-oauth2-proxy.c b/rest/rest-oauth2-proxy.c
new file mode 100644
index 0000000..f15b589
--- /dev/null
+++ b/rest/rest-oauth2-proxy.c
@@ -0,0 +1,802 @@
+/* rest-oauth2-proxy.c
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "rest-oauth2-proxy.h"
+#include "rest-oauth2-proxy-call.h"
+#include "rest-utils.h"
+#include "rest-private.h"
+#include <json-glib/json-glib.h>
+
+typedef struct
+{
+  gchar *authurl;
+  gchar *tokenurl;
+  gchar *redirect_uri;
+  gchar *client_id;
+  gchar *client_secret;
+
+  gchar *access_token;
+  gchar *refresh_token;
+
+  GDateTime *expiration_date;
+} RestOAuth2ProxyPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (RestOAuth2Proxy, rest_oauth2_proxy, REST_TYPE_PROXY)
+
+G_DEFINE_QUARK (rest-oauth2-error-quark, rest_oauth2_error)
+
+enum {
+  PROP_0,
+  PROP_AUTH_URL,
+  PROP_TOKEN_URL,
+  PROP_REDIRECT_URI,
+  PROP_CLIENT_ID,
+  PROP_CLIENT_SECRET,
+  PROP_ACCESS_TOKEN,
+  PROP_REFRESH_TOKEN,
+  PROP_EXPIRATION_DATE,
+  N_PROPS
+};
+
+static GParamSpec *properties [N_PROPS];
+
+static void
+rest_oauth2_proxy_parse_access_token (RestOAuth2Proxy *self,
+                                      GBytes          *payload,
+                                      GTask           *task)
+{
+  g_autoptr(JsonParser) parser = NULL;
+  g_autoptr(GError) error = NULL;
+  JsonNode *root;
+  JsonObject *root_object;
+  const gchar *data;
+  gsize size;
+  gint expires_in;
+  gint created_at;
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  data = g_bytes_get_data (payload, &size);
+
+  parser = json_parser_new ();
+  json_parser_load_from_data (parser, data, size, &error);
+  if (error != NULL)
+    {
+      g_task_return_error (task, error);
+      return;
+    }
+
+  root = json_parser_get_root (parser);
+  root_object = json_node_get_object (root);
+
+  if (json_object_has_member (root_object, "access_token"))
+    rest_oauth2_proxy_set_access_token (self, json_object_get_string_member (root_object, "access_token"));
+  if (json_object_has_member (root_object, "refresh_token"))
+    rest_oauth2_proxy_set_refresh_token (self, json_object_get_string_member (root_object, "refresh_token"));
+
+  if (json_object_has_member (root_object, "expires_in") && json_object_has_member (root_object, "created_at"))
+    {
+      expires_in = json_object_get_int_member (root_object, "expires_in");
+      created_at = json_object_get_int_member (root_object, "created_at");
+
+      rest_oauth2_proxy_set_expiration_date (self, g_date_time_new_from_unix_local (created_at+expires_in));
+    }
+  else if (json_object_has_member (root_object, "expires_in"))
+    {
+      g_autoptr(GDateTime) now = g_date_time_new_now_utc ();
+      expires_in = json_object_get_int_member (root_object, "expires_in");
+      rest_oauth2_proxy_set_expiration_date (self, g_date_time_add_seconds (now, expires_in));
+    }
+
+  g_task_return_boolean (task, TRUE);
+}
+
+RestProxyCall *
+rest_oauth2_proxy_new_call (RestProxy *proxy)
+{
+  RestOAuth2Proxy *self = (RestOAuth2Proxy *)proxy;
+  RestProxyCall *call;
+  g_autofree gchar *auth;
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  auth = g_strdup_printf ("Bearer %s", rest_oauth2_proxy_get_access_token (self));
+
+  call = g_object_new (REST_TYPE_OAUTH2_PROXY_CALL, "proxy", proxy, NULL);
+  rest_proxy_call_add_header (call, "Authorization", auth);
+
+  return call;
+}
+
+/**
+ * rest_oauth2_proxy_new:
+ *
+ * Create a new #RestOAuth2Proxy.
+ *
+ * Returns: (transfer full): a newly created #RestOAuth2Proxy
+ */
+RestOAuth2Proxy *
+rest_oauth2_proxy_new (const gchar *authurl,
+                       const gchar *tokenurl,
+                       const gchar *redirecturl,
+                       const gchar *client_id,
+                       const gchar *client_secret,
+                       const gchar *baseurl)
+{
+  return g_object_new (REST_TYPE_OAUTH2_PROXY,
+                       "url-format", baseurl,
+                       "auth-url", authurl,
+                       "token-url", tokenurl,
+                       "redirect-uri", redirecturl,
+                       "client-id", client_id,
+                       "client-secret", client_secret,
+                       NULL);
+}
+
+static void
+rest_oauth2_proxy_finalize (GObject *object)
+{
+  RestOAuth2Proxy *self = (RestOAuth2Proxy *)object;
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_clear_pointer (&priv->authurl, g_free);
+  g_clear_pointer (&priv->tokenurl, g_free);
+  g_clear_pointer (&priv->redirect_uri, g_free);
+  g_clear_pointer (&priv->client_id, g_free);
+  g_clear_pointer (&priv->client_secret, g_free);
+  g_clear_pointer (&priv->access_token, g_free);
+  g_clear_pointer (&priv->refresh_token, g_free);
+  g_clear_pointer (&priv->expiration_date, g_date_time_unref);
+
+  G_OBJECT_CLASS (rest_oauth2_proxy_parent_class)->finalize (object);
+}
+
+static void
+rest_oauth2_proxy_get_property (GObject    *object,
+                                guint       prop_id,
+                                GValue     *value,
+                                GParamSpec *pspec)
+{
+  RestOAuth2Proxy *self = REST_OAUTH2_PROXY (object);
+
+  switch (prop_id)
+    {
+    case PROP_AUTH_URL:
+      g_value_set_string (value, rest_oauth2_proxy_get_auth_url (self));
+      break;
+    case PROP_TOKEN_URL:
+      g_value_set_string (value, rest_oauth2_proxy_get_token_url (self));
+      break;
+    case PROP_REDIRECT_URI:
+      g_value_set_string (value, rest_oauth2_proxy_get_redirect_uri (self));
+      break;
+    case PROP_CLIENT_ID:
+      g_value_set_string (value, rest_oauth2_proxy_get_client_id (self));
+      break;
+    case PROP_CLIENT_SECRET:
+      g_value_set_string (value, rest_oauth2_proxy_get_client_secret (self));
+      break;
+    case PROP_ACCESS_TOKEN:
+      g_value_set_string (value, rest_oauth2_proxy_get_access_token (self));
+      break;
+    case PROP_REFRESH_TOKEN:
+      g_value_set_string (value, rest_oauth2_proxy_get_refresh_token (self));
+      break;
+    case PROP_EXPIRATION_DATE:
+      g_value_set_boxed (value, rest_oauth2_proxy_get_expiration_date (self));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+rest_oauth2_proxy_set_property (GObject      *object,
+                                guint         prop_id,
+                                const GValue *value,
+                                GParamSpec   *pspec)
+{
+  RestOAuth2Proxy *self = REST_OAUTH2_PROXY (object);
+
+  switch (prop_id)
+    {
+    case PROP_AUTH_URL:
+      rest_oauth2_proxy_set_auth_url (self, g_value_get_string (value));
+      break;
+    case PROP_TOKEN_URL:
+      rest_oauth2_proxy_set_token_url (self, g_value_get_string (value));
+      break;
+    case PROP_REDIRECT_URI:
+      rest_oauth2_proxy_set_redirect_uri (self, g_value_get_string (value));
+      break;
+    case PROP_CLIENT_ID:
+      rest_oauth2_proxy_set_client_id (self, g_value_get_string (value));
+      break;
+    case PROP_CLIENT_SECRET:
+      rest_oauth2_proxy_set_client_secret (self, g_value_get_string (value));
+      break;
+    case PROP_ACCESS_TOKEN:
+      rest_oauth2_proxy_set_access_token (self, g_value_get_string (value));
+      break;
+    case PROP_REFRESH_TOKEN:
+      rest_oauth2_proxy_set_refresh_token (self, g_value_get_string (value));
+      break;
+    case PROP_EXPIRATION_DATE:
+      rest_oauth2_proxy_set_expiration_date (self, g_value_get_boxed (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+rest_oauth2_proxy_class_init (RestOAuth2ProxyClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  RestOAuth2ProxyClass *oauth2_class = REST_OAUTH2_PROXY_CLASS (klass);
+  RestProxyClass *proxy_class = REST_PROXY_CLASS (klass);
+
+  object_class->finalize = rest_oauth2_proxy_finalize;
+  object_class->get_property = rest_oauth2_proxy_get_property;
+  object_class->set_property = rest_oauth2_proxy_set_property;
+  oauth2_class->parse_access_token = rest_oauth2_proxy_parse_access_token;
+  proxy_class->new_call = rest_oauth2_proxy_new_call;
+
+  properties [PROP_AUTH_URL] =
+    g_param_spec_string ("auth-url",
+                         "AuthUrl",
+                         "AuthUrl",
+                         "",
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_TOKEN_URL] =
+    g_param_spec_string ("token-url",
+                         "TokenUrl",
+                         "TokenUrl",
+                         "",
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_REDIRECT_URI] =
+    g_param_spec_string ("redirect-uri",
+                         "RedirectUri",
+                         "RedirectUri",
+                         "",
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_CLIENT_ID] =
+    g_param_spec_string ("client-id",
+                         "ClientId",
+                         "ClientId",
+                         "",
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_CLIENT_SECRET] =
+    g_param_spec_string ("client-secret",
+                         "ClientSecret",
+                         "ClientSecret",
+                         "",
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_ACCESS_TOKEN] =
+    g_param_spec_string ("access-token",
+                         "AccessToken",
+                         "AccessToken",
+                         NULL,
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_REFRESH_TOKEN] =
+    g_param_spec_string ("refresh-token",
+                         "RefreshToken",
+                         "RefreshToken",
+                         NULL,
+                         (G_PARAM_READWRITE |
+                          G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_EXPIRATION_DATE] =
+    g_param_spec_boxed ("expiration-date",
+                        "ExpirationDate",
+                        "ExpirationDate",
+                        G_TYPE_DATE_TIME,
+                        (G_PARAM_READWRITE |
+                         G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+rest_oauth2_proxy_init (RestOAuth2Proxy *self)
+{
+}
+
+/**
+ * rest_oauth2_proxy_build_authorization_url:
+ * @self: a #RestOAuth2Proxy
+ * @code_challenge: the code challenge (see #RestPkceCodeChallenge)
+ * @scope: (nullable): the requesting scope of the resource
+ * @state: (out): a CRSF token which should be verified from the redirect_uri
+ *
+ *
+ * Returns: (transfer full): the authorization url which should be shown in a WebView in order to accept/decline the request
+ * to authorize the application
+ *
+ * Since: 0.8
+ */
+gchar *
+rest_oauth2_proxy_build_authorization_url (RestOAuth2Proxy  *self,
+                                           const gchar      *code_challenge,
+                                           const gchar      *scope,
+                                           gchar           **state)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+  g_autoptr(GHashTable) params = NULL;
+  g_autoptr(GUri) auth = NULL;
+  g_autoptr(GUri) authorization_url = NULL;
+  g_autofree gchar *params_string;
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  if (state != NULL)
+    *state = random_string (10);
+  params = g_hash_table_new (g_str_hash, g_str_equal);
+
+  g_hash_table_insert (params, "response_type", "code");
+  g_hash_table_insert (params, "client_id", priv->client_id);
+  g_hash_table_insert (params, "redirect_uri", priv->redirect_uri);
+  if (state != NULL)
+    g_hash_table_insert (params, "state", *state);
+  g_hash_table_insert (params, "code_challenge", (gchar *)code_challenge);
+  g_hash_table_insert (params, "code_challenge_method", "S256");
+  if (scope)
+    g_hash_table_insert (params, "scope", (gchar *)scope);
+
+  params_string = soup_form_encode_hash (params);
+  auth = g_uri_parse (priv->authurl, G_URI_FLAGS_NONE, NULL);
+  authorization_url = g_uri_build (G_URI_FLAGS_ENCODED,
+                                   g_uri_get_scheme (auth),
+                                   NULL,
+                                   g_uri_get_host (auth),
+                                   g_uri_get_port (auth),
+                                   g_uri_get_path (auth),
+                                   params_string,
+                                   NULL);
+  return g_uri_to_string (authorization_url);
+}
+
+static void
+rest_oauth2_proxy_fetch_access_token_cb (SoupMessage *msg,
+                                         GBytes      *body,
+                                         GError      *error,
+                                         gpointer     user_data)
+{
+  g_autoptr(GTask) task = user_data;
+  RestOAuth2Proxy *self;
+
+  g_assert (G_IS_TASK (task));
+
+  self = g_task_get_source_object (task);
+
+  if (error)
+    {
+      g_task_return_error (task, error);
+      return;
+    }
+
+  REST_OAUTH2_PROXY_GET_CLASS (self)->parse_access_token (self, body, g_steal_pointer (&task));
+}
+
+void
+rest_oauth2_proxy_fetch_access_token_async (RestOAuth2Proxy     *self,
+                                            const gchar         *authorization_code,
+                                            const gchar         *code_verifier,
+                                            GCancellable        *cancellable,
+                                            GAsyncReadyCallback  callback,
+                                            gpointer             user_data)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+  g_autoptr(SoupMessage) msg = NULL;
+  g_autoptr(GTask) task = NULL;
+  g_autoptr(GHashTable) params = NULL;
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+  g_return_if_fail (authorization_code != NULL);
+
+  task = g_task_new (self, cancellable, callback, user_data);
+  params = g_hash_table_new (g_str_hash, g_str_equal);
+
+  g_hash_table_insert (params, "client_id", priv->client_id);
+  g_hash_table_insert (params, "grant_type", "authorization_code");
+  g_hash_table_insert (params, "code", (gchar *)authorization_code);
+  g_hash_table_insert (params, "redirect_uri", priv->redirect_uri);
+  g_hash_table_insert (params, "code_verifier", (gchar *)code_verifier);
+
+#if WITH_SOUP_2
+  msg = soup_form_request_new_from_hash (SOUP_METHOD_POST, priv->tokenurl, params);
+#else
+  msg = soup_message_new_from_encoded_form (SOUP_METHOD_POST, priv->tokenurl, soup_form_encode_hash (params));
+#endif
+
+  _rest_proxy_queue_message (REST_PROXY (self),
+#if WITH_SOUP_2
+                             g_steal_pointer (&msg),
+#else
+                             msg,
+#endif
+                             cancellable, rest_oauth2_proxy_fetch_access_token_cb, g_steal_pointer (&task));
+
+}
+
+/**
+ * rest_oauth2_proxy_fetch_access_token_finish:
+ * @self: an #RestOauth2Proxy
+ * @result: a #GAsyncResult provided to callback
+ * @error: a location for a #GError, or %NULL
+ *
+ * Returns:
+ */
+gboolean
+rest_oauth2_proxy_fetch_access_token_finish (RestOAuth2Proxy  *self,
+                                             GAsyncResult     *result,
+                                             GError          **error)
+{
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), FALSE);
+  g_return_val_if_fail (g_task_is_valid (result, self), FALSE);
+
+  return g_task_propagate_boolean (G_TASK (result), error);
+}
+
+gboolean
+rest_oauth2_proxy_refresh_access_token (RestOAuth2Proxy *self,
+                                        GError         **error)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+  g_autoptr(SoupMessage) msg = NULL;
+  g_autoptr(GHashTable) params = NULL;
+  g_autoptr(GTask) task = NULL;
+  GBytes *payload;
+
+  task = g_task_new (self, NULL, NULL, NULL);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), FALSE);
+
+  if (priv->refresh_token == NULL)
+    {
+      *error = g_error_new (REST_OAUTH2_ERROR,
+                            REST_OAUTH2_ERROR_NO_REFRESH_TOKEN,
+                            "No refresh token available");
+      return FALSE;
+    }
+
+  params = g_hash_table_new (g_str_hash, g_str_equal);
+
+  g_hash_table_insert (params, "client_id", priv->client_id);
+  g_hash_table_insert (params, "refresh_token", priv->refresh_token);
+  g_hash_table_insert (params, "redirect_uri", priv->redirect_uri);
+  g_hash_table_insert (params, "grant_type", "refresh_token");
+
+#if WITH_SOUP_2
+  msg = soup_form_request_new_from_hash (SOUP_METHOD_POST, priv->tokenurl, params);
+#else
+  msg = soup_message_new_from_encoded_form (SOUP_METHOD_POST, priv->tokenurl, soup_form_encode_hash (params));
+#endif
+  payload = _rest_proxy_send_message (REST_PROXY (self), msg, NULL, error);
+  if (error && *error)
+    {
+      return FALSE;
+    }
+
+  REST_OAUTH2_PROXY_GET_CLASS (self)->parse_access_token (self, payload, g_steal_pointer (&task));
+  return TRUE;
+}
+
+static void
+rest_oauth2_proxy_refresh_access_token_cb (SoupMessage *msg,
+                                           GBytes      *payload,
+                                           GError      *error,
+                                           gpointer     user_data)
+{
+  g_autoptr(GTask) task = user_data;
+  RestOAuth2Proxy *self;
+
+  g_assert (G_IS_TASK (task));
+
+  self = g_task_get_source_object (task);
+
+  if (error)
+    {
+      g_task_return_error (task, error);
+      return;
+    }
+
+  REST_OAUTH2_PROXY_GET_CLASS (self)->parse_access_token (self, payload, g_steal_pointer (&task));
+}
+
+void
+rest_oauth2_proxy_refresh_access_token_async (RestOAuth2Proxy     *self,
+                                              GCancellable        *cancellable,
+                                              GAsyncReadyCallback  callback,
+                                              gpointer             user_data)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+  g_autoptr(SoupMessage) msg = NULL;
+  g_autoptr(GHashTable) params = NULL;
+  g_autoptr(GTask) task = NULL;
+
+  task = g_task_new (self, cancellable, callback, user_data);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (priv->refresh_token == NULL)
+    {
+      g_task_return_new_error (task,
+                               REST_OAUTH2_ERROR,
+                               REST_OAUTH2_ERROR_NO_REFRESH_TOKEN,
+                               "No refresh token available");
+      return;
+    }
+
+  params = g_hash_table_new (g_str_hash, g_str_equal);
+
+  g_hash_table_insert (params, "client_id", priv->client_id);
+  g_hash_table_insert (params, "refresh_token", priv->refresh_token);
+  g_hash_table_insert (params, "redirect_uri", priv->redirect_uri);
+  g_hash_table_insert (params, "grant_type", "refresh_token");
+
+#if WITH_SOUP_2
+  msg = soup_form_request_new_from_hash (SOUP_METHOD_POST, priv->tokenurl, params);
+#else
+  msg = soup_message_new_from_encoded_form (SOUP_METHOD_POST, priv->tokenurl, soup_form_encode_hash (params));
+#endif
+  _rest_proxy_queue_message (REST_PROXY (self),
+#if WITH_SOUP_2
+                             g_steal_pointer (&msg),
+#else
+                             msg,
+#endif
+                             cancellable,
+                             rest_oauth2_proxy_refresh_access_token_cb,
+                             g_steal_pointer (&task));
+}
+
+/**
+ * rest_oauth2_proxy_refresh_access_token_finish:
+ * @self: an #RestOauth2Proxy
+ * @result: a #GAsyncResult provided to callback
+ * @error: a location for a #GError, or %NULL
+ *
+ * Returns:
+ */
+gboolean
+rest_oauth2_proxy_refresh_access_token_finish (RestOAuth2Proxy  *self,
+                                               GAsyncResult     *result,
+                                               GError          **error)
+{
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), FALSE);
+  g_return_val_if_fail (g_task_is_valid (result, self), FALSE);
+
+  return g_task_propagate_boolean (G_TASK (result), error);
+}
+
+const gchar *
+rest_oauth2_proxy_get_auth_url (RestOAuth2Proxy *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->authurl;
+}
+
+void
+rest_oauth2_proxy_set_auth_url (RestOAuth2Proxy *self,
+                                const gchar     *authurl)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->authurl, authurl) != 0)
+    {
+      g_clear_pointer (&priv->authurl, g_free);
+      priv->authurl = g_strdup (authurl);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_AUTH_URL]);
+    }
+}
+
+const gchar *
+rest_oauth2_proxy_get_token_url (RestOAuth2Proxy *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->tokenurl;
+}
+
+void
+rest_oauth2_proxy_set_token_url (RestOAuth2Proxy *self,
+                                 const gchar     *tokenurl)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->tokenurl, tokenurl) != 0)
+    {
+      g_clear_pointer (&priv->tokenurl, g_free);
+      priv->tokenurl = g_strdup (tokenurl);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_TOKEN_URL]);
+    }
+}
+
+const gchar *
+rest_oauth2_proxy_get_redirect_uri (RestOAuth2Proxy *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->redirect_uri;
+}
+
+void
+rest_oauth2_proxy_set_redirect_uri (RestOAuth2Proxy *self,
+                                    const gchar     *redirect_uri)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->redirect_uri, redirect_uri) != 0)
+    {
+      g_clear_pointer (&priv->redirect_uri, g_free);
+      priv->redirect_uri = g_strdup (redirect_uri);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_REDIRECT_URI]);
+    }
+}
+
+const gchar *
+rest_oauth2_proxy_get_client_id (RestOAuth2Proxy *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->client_id;
+}
+
+void
+rest_oauth2_proxy_set_client_id (RestOAuth2Proxy *self,
+                                 const gchar     *client_id)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->client_id, client_id) != 0)
+    {
+      g_clear_pointer (&priv->client_id, g_free);
+      priv->client_id = g_strdup (client_id);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_CLIENT_ID]);
+    }
+}
+
+const gchar *
+rest_oauth2_proxy_get_client_secret (RestOAuth2Proxy *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->client_secret;
+}
+
+void
+rest_oauth2_proxy_set_client_secret (RestOAuth2Proxy *self,
+                                     const gchar     *client_secret)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->client_secret, client_secret) != 0)
+    {
+      g_clear_pointer (&priv->client_secret, g_free);
+      priv->client_secret = g_strdup (client_secret);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_CLIENT_SECRET]);
+    }
+}
+
+const gchar *
+rest_oauth2_proxy_get_access_token (RestOAuth2Proxy *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->access_token;
+}
+
+void
+rest_oauth2_proxy_set_access_token (RestOAuth2Proxy *self,
+                                    const gchar     *access_token)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->access_token, access_token) != 0)
+    {
+      g_clear_pointer (&priv->access_token, g_free);
+      priv->access_token = g_strdup (access_token);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ACCESS_TOKEN]);
+    }
+}
+
+const gchar *
+rest_oauth2_proxy_get_refresh_token (RestOAuth2Proxy  *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->refresh_token;
+}
+
+void
+rest_oauth2_proxy_set_refresh_token (RestOAuth2Proxy *self,
+                                     const gchar     *refresh_token)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  if (g_strcmp0 (priv->refresh_token, refresh_token) != 0)
+    {
+      g_clear_pointer (&priv->refresh_token, g_free);
+      priv->refresh_token = g_strdup (refresh_token);
+      g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_REFRESH_TOKEN]);
+    }
+}
+
+GDateTime *
+rest_oauth2_proxy_get_expiration_date (RestOAuth2Proxy  *self)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+  g_return_val_if_fail (REST_IS_OAUTH2_PROXY (self), NULL);
+
+  return priv->expiration_date;
+}
+
+void
+rest_oauth2_proxy_set_expiration_date (RestOAuth2Proxy *self,
+                                       GDateTime       *expiration_date)
+{
+  RestOAuth2ProxyPrivate *priv = rest_oauth2_proxy_get_instance_private (self);
+
+  g_return_if_fail (REST_IS_OAUTH2_PROXY (self));
+
+  g_clear_pointer (&priv->expiration_date, g_date_time_unref);
+  priv->expiration_date = g_date_time_ref (expiration_date);
+  g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_EXPIRATION_DATE]);
+}
diff --git a/rest/rest-oauth2-proxy.h b/rest/rest-oauth2-proxy.h
new file mode 100644
index 0000000..dd4148e
--- /dev/null
+++ b/rest/rest-oauth2-proxy.h
@@ -0,0 +1,101 @@
+/* rest-oauth2-proxy.h
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <rest/rest-proxy.h>
+
+G_BEGIN_DECLS
+
+#define REST_TYPE_OAUTH2_PROXY (rest_oauth2_proxy_get_type())
+
+G_DECLARE_DERIVABLE_TYPE (RestOAuth2Proxy, rest_oauth2_proxy, REST, OAUTH2_PROXY, RestProxy)
+
+struct _RestOAuth2ProxyClass
+{
+  RestProxyClass parent_class;
+
+  void (*parse_access_token) (RestOAuth2Proxy *self,
+                              GBytes          *payload,
+                              GTask           *task);
+
+  gpointer padding[8];
+};
+
+enum {
+  REST_OAUTH2_ERROR_NO_REFRESH_TOKEN,
+  REST_OAUTH2_ERROR_ACCESS_TOKEN_EXPIRED,
+};
+
+#define REST_OAUTH2_ERROR rest_oauth2_error_quark ()
+GQuark rest_oauth2_error_quark ();
+
+RestOAuth2Proxy *rest_oauth2_proxy_new                         (const gchar          *authurl,
+                                                                const gchar          *tokenurl,
+                                                                const gchar          *redirecturl,
+                                                                const gchar          *client_id,
+                                                                const gchar          *client_secret,
+                                                                const gchar          *baseurl);
+gchar           *rest_oauth2_proxy_build_authorization_url     (RestOAuth2Proxy      *self,
+                                                                const gchar          *code_challenge,
+                                                                const gchar          *scope,
+                                                                gchar               **state);
+void             rest_oauth2_proxy_fetch_access_token_async    (RestOAuth2Proxy      *self,
+                                                                const gchar          *authorization_code,
+                                                                const gchar          *code_verifier,
+                                                                GCancellable         *cancellable,
+                                                                GAsyncReadyCallback   callback,
+                                                                gpointer              user_data);
+gboolean         rest_oauth2_proxy_fetch_access_token_finish   (RestOAuth2Proxy      *self,
+                                                                GAsyncResult         *result,
+                                                                GError              **error);
+gboolean         rest_oauth2_proxy_refresh_access_token        (RestOAuth2Proxy      *self,
+                                                                GError              **error);
+void             rest_oauth2_proxy_refresh_access_token_async  (RestOAuth2Proxy      *self,
+                                                                GCancellable         *cancellable,
+                                                                GAsyncReadyCallback   callback,
+                                                                gpointer              user_data);
+gboolean         rest_oauth2_proxy_refresh_access_token_finish (RestOAuth2Proxy      *self,
+                                                                GAsyncResult         *result,
+                                                                GError              **error);
+const gchar     *rest_oauth2_proxy_get_auth_url                (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_auth_url                (RestOAuth2Proxy      *self,
+                                                                const gchar          *tokenurl);
+const gchar     *rest_oauth2_proxy_get_token_url               (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_token_url               (RestOAuth2Proxy      *self,
+                                                                const gchar          *tokenurl);
+const gchar     *rest_oauth2_proxy_get_redirect_uri            (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_redirect_uri            (RestOAuth2Proxy      *self,
+                                                                const gchar          *redirect_uri);
+const gchar     *rest_oauth2_proxy_get_client_id               (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_client_id               (RestOAuth2Proxy      *self,
+                                                                const gchar          *client_id);
+const gchar     *rest_oauth2_proxy_get_client_secret           (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_client_secret           (RestOAuth2Proxy      *self,
+                                                                const gchar          *client_secret);
+const gchar     *rest_oauth2_proxy_get_access_token            (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_access_token            (RestOAuth2Proxy      *self,
+                                                                const gchar          *access_token);
+const gchar     *rest_oauth2_proxy_get_refresh_token           (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_refresh_token           (RestOAuth2Proxy      *self,
+                                                                const gchar          *refresh_token);
+GDateTime       *rest_oauth2_proxy_get_expiration_date         (RestOAuth2Proxy      *self);
+void             rest_oauth2_proxy_set_expiration_date         (RestOAuth2Proxy      *self,
+                                                                GDateTime            *expiration_date);
+
+G_END_DECLS
diff --git a/rest/rest-pkce-code-challenge.c b/rest/rest-pkce-code-challenge.c
new file mode 100644
index 0000000..0d936f8
--- /dev/null
+++ b/rest/rest-pkce-code-challenge.c
@@ -0,0 +1,121 @@
+/* rest-pkce-code-challenge.c
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "rest-pkce-code-challenge.h"
+#include "rest-utils.h"
+
+G_DEFINE_BOXED_TYPE (RestPkceCodeChallenge, rest_pkce_code_challenge, rest_pkce_code_challenge_copy, rest_pkce_code_challenge_free)
+
+struct _RestPkceCodeChallenge
+{
+  gchar *code_verifier;
+  gchar *code_challenge;
+};
+
+/**
+ * rest_pkce_code_challenge_new_random:
+ *
+ * Creates a new #RestPkceCodeChallenge.
+ *
+ * Returns: (transfer full): A newly created #RestPkceCodeChallenge
+ */
+RestPkceCodeChallenge *
+rest_pkce_code_challenge_new_random (void)
+{
+  RestPkceCodeChallenge *self;
+  gint length = g_random_int_range (43, 128);
+  gsize digest_len = 200;
+  guchar code_verifier_sha256[200];
+  GChecksum *sha256 = g_checksum_new (G_CHECKSUM_SHA256);
+
+  self = g_slice_new0 (RestPkceCodeChallenge);
+  self->code_verifier = random_string (length);
+  g_checksum_update (sha256, (guchar *)self->code_verifier, -1);
+  g_checksum_get_digest (sha256, (guchar *)&code_verifier_sha256, &digest_len);
+
+  self->code_challenge = g_base64_encode (code_verifier_sha256, digest_len);
+  g_strdelimit (self->code_challenge, "=", '\0');
+  g_strdelimit (self->code_challenge, "+", '-');
+  g_strdelimit (self->code_challenge, "/", '_');
+
+  return self;
+}
+
+/**
+ * rest_pkce_code_challenge_copy:
+ * @self: a #RestPkceCodeChallenge
+ *
+ * Makes a deep copy of a #RestPkceCodeChallenge.
+ *
+ * Returns: (transfer full): A newly created #RestPkceCodeChallenge with the same
+ *   contents as @self
+ */
+RestPkceCodeChallenge *
+rest_pkce_code_challenge_copy (RestPkceCodeChallenge *self)
+{
+  RestPkceCodeChallenge *copy;
+
+  g_return_val_if_fail (self, NULL);
+
+  copy = g_slice_new0 (RestPkceCodeChallenge);
+  copy->code_verifier = self->code_verifier;
+  copy->code_challenge = self->code_challenge;
+
+  return copy;
+}
+
+/**
+ * rest_pkce_code_challenge_free:
+ * @self: a #RestPkceCodeChallenge
+ *
+ * Frees a #RestPkceCodeChallenge allocated using rest_pkce_code_challenge_new()
+ * or rest_pkce_code_challenge_copy().
+ */
+void
+rest_pkce_code_challenge_free (RestPkceCodeChallenge *self)
+{
+  g_return_if_fail (self);
+
+  g_slice_free (RestPkceCodeChallenge, self);
+}
+
+/**
+ * rest_pkce_code_challenge_get_challenge:
+ *
+ * Returns the Code Challenge for the Pkce verification.
+ *
+ * Returns: the code_challenge
+ */
+const gchar *
+rest_pkce_code_challenge_get_challenge (RestPkceCodeChallenge *self)
+{
+  return self->code_challenge;
+}
+
+/**
+ * rest_pkce_code_challenge_get_verifier:
+ *
+ * Returns the Code Verifier for the Pkce verification.
+ *
+ * Returns: the code_verifier
+ */
+const gchar *
+rest_pkce_code_challenge_get_verifier (RestPkceCodeChallenge *self)
+{
+  return self->code_verifier;
+}
diff --git a/rest/rest-pkce-code-challenge.h b/rest/rest-pkce-code-challenge.h
new file mode 100644
index 0000000..9ce3907
--- /dev/null
+++ b/rest/rest-pkce-code-challenge.h
@@ -0,0 +1,44 @@
+/* rest-pkce-code-challenge.h
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define REST_TYPE_PKCE_CODE_CHALLENGE (rest_pkce_code_challenge_get_type ())
+
+/**
+ * RestPkceCodeChallenge:
+ *
+ * In order to play a Pkce Code Verification during a OAuth2 authorization
+ * you need this structure which handles the algorithmic part.
+ */
+typedef struct _RestPkceCodeChallenge RestPkceCodeChallenge;
+
+GType                  rest_pkce_code_challenge_get_type      (void) G_GNUC_CONST;
+RestPkceCodeChallenge *rest_pkce_code_challenge_new_random    (void);
+RestPkceCodeChallenge *rest_pkce_code_challenge_copy          (RestPkceCodeChallenge *self);
+void                   rest_pkce_code_challenge_free          (RestPkceCodeChallenge *self);
+const gchar           *rest_pkce_code_challenge_get_challenge (RestPkceCodeChallenge *self);
+const gchar           *rest_pkce_code_challenge_get_verifier  (RestPkceCodeChallenge *self);
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC (RestPkceCodeChallenge, rest_pkce_code_challenge_free)
+
+G_END_DECLS
diff --git a/rest/rest-proxy-call.c b/rest/rest-proxy-call.c
index 62b00da..24d952d 100644
--- a/rest/rest-proxy-call.c
+++ b/rest/rest-proxy-call.c
@@ -238,6 +238,8 @@ rest_proxy_call_set_method (RestProxyCall *call,
  * @call: The #RestProxyCall
  *
  * Get the HTTP method to use when making the call, for example GET or POST.
+ *
+ * Returns: (transfer none): the HTTP method
  */
 const char *
 rest_proxy_call_get_method (RestProxyCall *call)
@@ -1005,19 +1007,23 @@ _call_message_call_completed_cb (SoupMessage *message,
                                  GError      *error,
                                  gpointer     user_data)
 {
-  GTask *task = user_data;
+  g_autoptr(GTask) task = user_data;
   RestProxyCall *call;
 
   call = REST_PROXY_CALL (g_task_get_source_object (task));
 
+  if (error)
+    {
+      g_task_return_error (task, error);
+      return;
+    }
+
   finish_call (call, message, payload, &error);
 
   if (error != NULL)
     g_task_return_error (task, error);
   else
     g_task_return_boolean (task, TRUE);
-
-  g_object_unref (task);
 }
 
 /**
@@ -1158,6 +1164,8 @@ _continuous_call_message_sent_cb (GObject      *source,
  *
  * You may unref the call after calling this function since there is an
  * internal reference, or you may unref in the callback.
+ *
+ * Returns: %TRUE on success
  */
 gboolean
 rest_proxy_call_continuous (RestProxyCall                    *call,
@@ -1491,11 +1499,7 @@ rest_proxy_call_get_payload_length (RestProxyCall *call)
   g_return_val_if_fail (REST_IS_PROXY_CALL (call), 0);
 
   payload = GET_PRIVATE (call)->payload;
-#ifdef WITH_SOUP_2
-  return payload ? g_bytes_get_size (payload) - 1 : 0;
-#else
   return payload ? g_bytes_get_size (payload) : 0;
-#endif
 }
 
 /**
diff --git a/rest/rest-proxy.c b/rest/rest-proxy.c
index 171f6cb..8231b6f 100644
--- a/rest/rest-proxy.c
+++ b/rest/rest-proxy.c
@@ -763,7 +763,7 @@ message_finished_cb (SoupSession *session,
   GError *error = NULL;
 
   body = g_bytes_new (message->response_body->data,
-                      message->response_body->length + 1);
+                      message->response_body->length);
   data->callback (message, body, error, data->user_data);
   g_free (data);
 }
@@ -894,7 +894,7 @@ _rest_proxy_send_message (RestProxy    *proxy,
 #ifdef WITH_SOUP_2
   soup_session_send_message (priv->session, message);
   body = g_bytes_new (message->response_body->data,
-                      message->response_body->length + 1);
+                      message->response_body->length);
 #else
   body = soup_session_send_and_read (priv->session,
                                      message,
diff --git a/rest/rest-utils.c b/rest/rest-utils.c
new file mode 100644
index 0000000..939d49e
--- /dev/null
+++ b/rest/rest-utils.c
@@ -0,0 +1,44 @@
+/* rest-utils.c
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "rest-utils.h"
+
+/**
+ * random_string:
+ * @length: the length of the random string
+ *
+ * Creates a random string from a given alphabeth with length @length
+ *
+ * Returns: (transfer full): a random string
+ */
+gchar *
+random_string (guint length)
+{
+  g_autoptr(GRand) rand = g_rand_new ();
+  gchar *buffer = g_slice_alloc0 (sizeof (gchar) * length + 1);
+  gchar alphabeth[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-._~";
+
+  for (guint i = 0; i < length; i++)
+    {
+      buffer[i] = alphabeth[g_rand_int (rand) % (sizeof (alphabeth) - 1)];
+    }
+  buffer[length] = '\0';
+
+  return buffer;
+}
+
diff --git a/rest/rest-utils.h b/rest/rest-utils.h
new file mode 100644
index 0000000..cd61145
--- /dev/null
+++ b/rest/rest-utils.h
@@ -0,0 +1,27 @@
+/* rest-utils.h
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+gchar *random_string (guint length);
+
+G_END_DECLS
diff --git a/rest/rest.h b/rest/rest.h
new file mode 100644
index 0000000..9bc964c
--- /dev/null
+++ b/rest/rest.h
@@ -0,0 +1,35 @@
+/* rest.h
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+#define REST_INSIDE
+# include "rest-proxy.h"
+# include "rest-proxy-call.h"
+# include "rest-oauth2-proxy.h"
+# include "rest-utils.h"
+# include "rest-pkce-code-challenge.h"
+#undef REST_INSIDE
+
+G_END_DECLS
diff --git a/tests/Makefile.am b/tests/Makefile.am
deleted file mode 100644
index 5ffdd46..0000000
--- a/tests/Makefile.am
+++ /dev/null
@@ -1,18 +0,0 @@
-TESTS = proxy proxy-continuous threaded oauth oauth-async oauth2 flickr lastfm xml custom-serialize
-
-AM_CPPFLAGS = $(SOUP_CFLAGS) -I$(top_srcdir) $(GCOV_CFLAGS)
-AM_LDFLAGS = $(SOUP_LIBS) $(GCOV_LDFLAGS) \
-	     ../rest/librest-@API_VERSION@.la ../rest-extras/librest-extras-@API_VERSION@.la
-
-check_PROGRAMS = $(TESTS)
-
-proxy_SOURCES = proxy.c
-proxy_continuous_SOURCES = proxy-continuous.c
-threaded_SOURCES = threaded.c
-oauth_SOURCES = oauth.c
-oauth_async_SOURCES = oauth-async.c
-oauth2_SOURCES = oauth2.c
-flickr_SOURCES = flickr.c
-lastfm_SOURCES = lastfm.c
-xml_SOURCES = xml.c
-custom_serialize_SOURCES = custom-serialize.c
diff --git a/tests/flickr.c b/tests/flickr.c
index 11301fa..2d1ee99 100644
--- a/tests/flickr.c
+++ b/tests/flickr.c
@@ -108,6 +108,18 @@ test_flickr ()
 
 }
 
+static void
+test_build_login_url (void)
+{
+  RestProxy *p = flickr_proxy_new ("api", "secret");
+  g_autofree gchar *login_url = flickr_proxy_build_login_url (FLICKR_PROXY (p), NULL, "read");
+
+  g_assert_cmpstr (login_url, ==, "http://flickr.com/services/auth/?api_key=api&perms=read&api_sig=55e7647bc1a6e512172b8fda472a64a8");
+
+  login_url = flickr_proxy_build_login_url (FLICKR_PROXY (p), "746563215463214621", "read");
+
+  g_assert_cmpstr (login_url, ==, "http://flickr.com/services/auth/?frob=746563215463214621&api_key=api&perms=read&api_sig=bcabfd22f3beb489aeb3605b8c9e0441");
+}
 
 int
 main (int argc, char **argv)
@@ -115,6 +127,7 @@ main (int argc, char **argv)
   g_test_init (&argc, &argv, NULL);
 
   g_test_add_func ("/flickr/flickr", test_flickr);
+  g_test_add_func ("/flickr/test_build_login_url", test_build_login_url);
 
   return g_test_run ();
 }
diff --git a/tests/helper/test-server.c b/tests/helper/test-server.c
new file mode 100644
index 0000000..1ddcb67
--- /dev/null
+++ b/tests/helper/test-server.c
@@ -0,0 +1,121 @@
+/* test-server.c
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "test-server.h"
+
+static GMutex server_start_mutex;
+static GCond server_start_cond;
+
+SoupServer *
+test_server_new ()
+{
+  SoupServer *server = soup_server_new ("tls-certificate", NULL, NULL);
+  return server;
+}
+
+gchar *
+test_server_get_uri (SoupServer *server,
+                     const char *scheme,
+                     const char *host)
+{
+	GSList *uris, *u;
+#ifdef WITH_SOUP_2
+  SoupURI *uri, *ret_uri = NULL;
+#else
+	GUri *uri, *ret_uri = NULL;
+#endif
+
+	uris = soup_server_get_uris (server);
+	for (u = uris; u; u = u->next) {
+		uri = u->data;
+
+#ifdef WITH_SOUP_2
+		if (scheme && strcmp (soup_uri_get_scheme (uri), scheme) != 0)
+			continue;
+		if (host && strcmp (soup_uri_get_host (uri), host) != 0)
+			continue;
+
+		ret_uri = soup_uri_copy (uri);
+#else
+		if (scheme && strcmp (g_uri_get_scheme (uri), scheme) != 0)
+			continue;
+		if (host && strcmp (g_uri_get_host (uri), host) != 0)
+			continue;
+
+		ret_uri = g_uri_ref (uri);
+#endif
+		break;
+	}
+
+#ifdef WITH_SOUP_2
+	g_slist_free_full (uris, (GDestroyNotify)soup_uri_free);
+  return soup_uri_to_string (ret_uri, FALSE);
+#else
+	g_slist_free_full (uris, (GDestroyNotify)g_uri_unref);
+  return g_uri_to_string (ret_uri);
+#endif
+}
+
+static gpointer
+run_server_thread (gpointer user_data)
+{
+	SoupServer *server = user_data;
+	GMainContext *context;
+	GMainLoop *loop;
+  GError *error = NULL;
+
+	context = g_main_context_new ();
+	g_main_context_push_thread_default (context);
+	loop = g_main_loop_new (context, FALSE);
+	g_object_set_data (G_OBJECT (server), "GMainLoop", loop);
+
+	// TODO: error handling
+	soup_server_listen_local (server, 0, 0, &error);
+  if (error != NULL)
+    g_error ("%s", error->message);
+
+	g_mutex_lock (&server_start_mutex);
+	g_cond_signal (&server_start_cond);
+	g_mutex_unlock (&server_start_mutex);
+
+	g_main_loop_run (loop);
+	g_main_loop_unref (loop);
+
+  g_print("%s\n", "Shutting down server...");
+
+	soup_server_disconnect (server);
+
+	g_main_context_pop_thread_default (context);
+	g_main_context_unref (context);
+
+	return NULL;
+}
+
+void
+test_server_run_in_thread (SoupServer *server)
+{
+	GThread *thread;
+
+	g_mutex_lock (&server_start_mutex);
+
+	thread = g_thread_new ("server_thread", run_server_thread, server);
+	g_cond_wait (&server_start_cond, &server_start_mutex);
+	g_mutex_unlock (&server_start_mutex);
+
+	g_object_set_data (G_OBJECT (server), "thread", thread);
+}
diff --git a/tests/helper/test-server.h b/tests/helper/test-server.h
new file mode 100644
index 0000000..ee25600
--- /dev/null
+++ b/tests/helper/test-server.h
@@ -0,0 +1,32 @@
+/* test-server.h
+ *
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <glib.h>
+#include <libsoup/soup.h>
+
+G_BEGIN_DECLS
+
+SoupServer *test_server_new           (void);
+void        test_server_run_in_thread (SoupServer *server);
+gchar      *test_server_get_uri       (SoupServer *server,
+                                       const char *scheme,
+                                       const char *host);
+
+G_END_DECLS
diff --git a/tests/meson.build b/tests/meson.build
index 0fe80e8..c7c9170 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -3,9 +3,9 @@ test_suites = {
     'proxy',
     'proxy-continuous',
     'threaded',
-    'oauth2',
     'xml',
     'custom-serialize',
+    'oauth2',
   ],
   'rest-extras': [
     'flickr',
@@ -23,7 +23,7 @@ test_deps = [
 foreach suite, test_names : test_suites
   foreach name : test_names
     test_bin = executable(name,
-      '@0@.c'.format(name),
+      ['@0@.c'.format(name), 'helper/test-server.c'],
       dependencies: test_deps,
       include_directories: config_h_inc,
     )
diff --git a/tests/oauth2.c b/tests/oauth2.c
index 12721bc..a9b6e9d 100644
--- a/tests/oauth2.c
+++ b/tests/oauth2.c
@@ -1,8 +1,6 @@
-/*
- * librest - RESTful web services access
- * Copyright (c) 2010 Intel Corporation.
+/* oauth2.c
  *
- * Authors: Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>
+ * Copyright 2021 Günther Wagner <info@gunibert.de>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU Lesser General Public License,
@@ -16,54 +14,333 @@
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
  */
 
-#include <rest/oauth2-proxy.h>
-#include <string.h>
+#include <glib.h>
+#include "rest/rest.h"
+#include "helper/test-server.h"
 
+#ifdef WITH_SOUP_2
+static void
+server_callback (SoupServer        *server,
+                 SoupMessage       *msg,
+                 const gchar       *path,
+                 GHashTable        *query,
+                 SoupClientContext *client,
+                 gpointer           user_data)
+#else
 static void
-test_url_no_fragment ()
+server_callback (SoupServer        *server,
+                 SoupServerMessage *msg,
+                 const gchar       *path,
+                 GHashTable        *query,
+                 gpointer           user_data)
+#endif
 {
-  char *token = oauth2_proxy_extract_access_token ("http://example.com");
+  if (g_strcmp0 (path, "/token") == 0)
+    {
+      gchar *json = "{"
+           "\"access_token\":\"2YotnFZFEjr1zCsicMWpAA\","
+           "\"token_type\":\"example\","
+           "\"expires_in\":3600,"
+           "\"refresh_token\":\"tGzv3JOkF0XG5Qx2TlKWIA\","
+           "\"example_parameter\":\"example_value\""
+         "}";
+#ifdef WITH_SOUP_2
+      soup_message_set_status (msg, SOUP_STATUS_OK);
+      soup_message_set_response (msg, "application/json", SOUP_MEMORY_COPY, json, strlen(json));
+#else
+      soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
+      soup_server_message_set_response (msg, "application/json", SOUP_MEMORY_COPY, json, strlen(json));
+#endif
 
-  g_assert_null (token);
+      return;
+    }
+  else if (g_strcmp0 (path, "/api/bearer") == 0)
+    {
+#ifdef WITH_SOUP_2
+      const gchar *authorization = soup_message_headers_get_one (msg->request_headers, "Authorization");
+      soup_message_set_status (msg, SOUP_STATUS_OK);
+      soup_message_set_response (msg, "text/plain", SOUP_MEMORY_COPY, authorization, strlen(authorization));
+#else
+      SoupMessageHeaders *headers = soup_server_message_get_request_headers (msg);
+      const gchar *authorization = soup_message_headers_get_one (headers, "Authorization");
+      soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
+      soup_server_message_set_response (msg, "text/plain", SOUP_MEMORY_COPY, authorization, strlen(authorization));
+#endif
+      return;
+    }
+  else if (g_strcmp0 (path, "/api/invalid") == 0)
+    {
+      gchar *resp = "{"
+           "\"error\":\"invalid_grant\""
+         "}";
+#ifdef WITH_SOUP_2
+      soup_message_set_status (msg, SOUP_STATUS_BAD_REQUEST);
+      soup_message_set_response (msg, "application/json", SOUP_MEMORY_COPY, resp, strlen(resp));
+#else
+      soup_server_message_set_status (msg, SOUP_STATUS_BAD_REQUEST, NULL);
+      soup_server_message_set_response (msg, "application/json", SOUP_MEMORY_COPY, resp, strlen(resp));
+#endif
+      return;
+    }
 }
 
 static void
-test_url_fragment_no_access_token ()
+test_authorization_url (gconstpointer url)
 {
-  char *token = oauth2_proxy_extract_access_token ("http://example.com/foo?foo=1#bar");
+  g_autoptr(RestProxy) proxy = REST_PROXY (rest_oauth2_proxy_new ("http://www.example.com/auth",
+                                                                  "http://www.example.com/token",
+                                                                  "http://www.example.com",
+                                                                  "client-id",
+                                                                  "client-secret",
+                                                                  "http://www.example.com/api"));
+  g_autoptr(RestPkceCodeChallenge) pkce = rest_pkce_code_challenge_new_random ();
 
-  g_assert_null (token);
-  g_free (token);
+  gchar *authorization_url = rest_oauth2_proxy_build_authorization_url (REST_OAUTH2_PROXY (proxy),
+                                             rest_pkce_code_challenge_get_challenge (pkce),
+                                             NULL,
+                                             NULL);
+  g_autofree gchar *expected = g_strdup_printf ("http://www.example.com/auth?code_challenge_method=S256&redirect_uri=http%%3A%%2F%%2Fwww.example.com&client_id=client-id&code_challenge=%s&response_type=code", rest_pkce_code_challenge_get_challenge (pkce));
+  g_assert_cmpstr (authorization_url, ==, expected);
 }
 
 static void
-test_access_token_simple ()
+test_fetch_access_token_finished (GObject      *object,
+                                  GAsyncResult *result,
+                                  gpointer      user_data)
 {
-  char *token = oauth2_proxy_extract_access_token ("http://example.com/foo?foo=1#access_token=1234567890_12.34561abcdefg&bar");
+  g_autoptr(GError) error = NULL;
+  gboolean *finished = user_data;
+
+  g_assert (G_IS_OBJECT (object));
+  g_assert (G_IS_ASYNC_RESULT (result));
 
-  g_assert_cmpstr (token, ==, "1234567890_12.34561abcdefg");
-  g_free (token);
+  rest_oauth2_proxy_fetch_access_token_finish (REST_OAUTH2_PROXY (object), result, &error);
+  g_assert_no_error (error);
+
+  *finished = TRUE;
 }
 
-static void test_url_encoding_access_token ()
+static void
+test_fetch_access_token (gconstpointer url)
 {
-  char *token = oauth2_proxy_extract_access_token ("http://example.com/foo?foo=1#access_token=1234567890%5F12%2E34561abcdefg&bar");
+  GMainContext *async_context = g_main_context_ref_thread_default ();
+  g_autoptr(GError) error = NULL;
+
+  g_autofree gchar *tokenurl = g_strdup_printf ("%stoken", (gchar *)url);
+  g_autofree gchar *baseurl = g_strdup_printf ("%sapi", (gchar *)url);
+
+  gboolean finished = FALSE;
+  g_autoptr(RestProxy) proxy = REST_PROXY (rest_oauth2_proxy_new ("http://www.example.com/auth",
+                                                                  tokenurl,
+                                                                  "http://www.example.com",
+                                                                  "client-id",
+                                                                  "client-secret",
+                                                                  baseurl));
+  rest_oauth2_proxy_fetch_access_token_async (REST_OAUTH2_PROXY (proxy),
+                                              "1234567890",
+                                              "code_verifier",
+                                              NULL,
+                                              test_fetch_access_token_finished,
+                                              &finished);
+  while (!finished) {
+    g_main_context_iteration (async_context, TRUE);
+  }
+
+  g_assert_cmpstr ("2YotnFZFEjr1zCsicMWpAA", ==, rest_oauth2_proxy_get_access_token (REST_OAUTH2_PROXY (proxy)));
+  g_assert_cmpstr ("tGzv3JOkF0XG5Qx2TlKWIA", ==, rest_oauth2_proxy_get_refresh_token (REST_OAUTH2_PROXY (proxy)));
+
+  g_autoptr(RestProxyCall) call = rest_proxy_new_call (proxy);
+  rest_proxy_call_set_method (call, "GET");
+  rest_proxy_call_set_function (call, "bearer");
+  rest_proxy_call_sync (call, &error);
+  g_assert_no_error (error);
+  g_autofree gchar *payload = g_strndup (rest_proxy_call_get_payload (call), rest_proxy_call_get_payload_length (call));
+  g_assert_cmpstr ("Bearer 2YotnFZFEjr1zCsicMWpAA", ==, payload);
 
-  g_assert_cmpstr (token, ==, "1234567890_12.34561abcdefg");
-  g_free (token);
+  g_main_context_unref (async_context);
 }
 
-int
-main (int argc, char **argv)
+static void
+test_refresh_access_token_finished_error (GObject      *object,
+                                          GAsyncResult *result,
+                                          gpointer      user_data)
+{
+  g_autoptr(GError) error = NULL;
+  gboolean *finished = user_data;
+
+  g_assert (G_IS_OBJECT (object));
+  g_assert (G_IS_ASYNC_RESULT (result));
+
+  rest_oauth2_proxy_refresh_access_token_finish (REST_OAUTH2_PROXY (object), result, &error);
+  g_assert_error (error, REST_OAUTH2_ERROR, REST_OAUTH2_ERROR_NO_REFRESH_TOKEN);
+
+  *finished = TRUE;
+}
+
+static void
+test_refresh_access_token_finished (GObject      *object,
+                                    GAsyncResult *result,
+                                    gpointer      user_data)
 {
+  g_autoptr(GError) error = NULL;
+  gboolean *finished = user_data;
+
+  g_assert (G_IS_OBJECT (object));
+  g_assert (G_IS_ASYNC_RESULT (result));
+
+  rest_oauth2_proxy_refresh_access_token_finish (REST_OAUTH2_PROXY (object), result, &error);
+  g_assert_no_error (error);
+
+  *finished = TRUE;
+}
+
+static void
+test_refresh_access_token (gconstpointer url)
+{
+  GMainContext *async_context = g_main_context_ref_thread_default ();
+
+  g_autofree gchar *tokenurl = g_strdup_printf ("%stoken", (gchar *)url);
+  g_autofree gchar *baseurl = g_strdup_printf ("%sapi", (gchar *)url);
+
+  gboolean finished = FALSE;
+  g_autoptr(RestProxy) proxy = REST_PROXY (rest_oauth2_proxy_new ("http://www.example.com/auth",
+                                                                  tokenurl,
+                                                                  "http://www.example.com",
+                                                                  "client-id",
+                                                                  "client-secret",
+                                                                  baseurl));
+
+  // Test error if no refresh token is set (note assertion happens in callback)
+  rest_oauth2_proxy_refresh_access_token_async (REST_OAUTH2_PROXY (proxy), NULL, test_refresh_access_token_finished_error, &finished);
+
+  while (!finished) {
+    g_main_context_iteration (async_context, TRUE);
+  }
+
+  // Test if refresh token gets refreshed
+  rest_oauth2_proxy_set_refresh_token (REST_OAUTH2_PROXY (proxy), "refresh_token");
+  rest_oauth2_proxy_refresh_access_token_async (REST_OAUTH2_PROXY (proxy), NULL, test_refresh_access_token_finished, &finished);
+
+  finished = FALSE;
+
+  while (!finished) {
+    g_main_context_iteration (async_context, TRUE);
+  }
+
+  g_assert_cmpstr ("2YotnFZFEjr1zCsicMWpAA", ==, rest_oauth2_proxy_get_access_token (REST_OAUTH2_PROXY (proxy)));
+  g_assert_cmpstr ("tGzv3JOkF0XG5Qx2TlKWIA", ==, rest_oauth2_proxy_get_refresh_token (REST_OAUTH2_PROXY (proxy)));
+
+  g_main_context_unref (async_context);
+}
+
+static void
+test_refresh_access_token_sync (gconstpointer url)
+{
+  g_autoptr(GError) error = NULL;
+
+  g_autofree gchar *tokenurl = g_strdup_printf ("%stoken", (gchar *)url);
+  g_autofree gchar *baseurl = g_strdup_printf ("%sapi", (gchar *)url);
+
+  g_autoptr(RestProxy) proxy = REST_PROXY (rest_oauth2_proxy_new ("http://www.example.com/auth",
+                                                                  tokenurl,
+                                                                  "http://www.example.com",
+                                                                  "client-id",
+                                                                  "client-secret",
+                                                                  baseurl));
+
+  rest_oauth2_proxy_refresh_access_token (REST_OAUTH2_PROXY (proxy), &error);
+  g_assert_error (error, REST_OAUTH2_ERROR, REST_OAUTH2_ERROR_NO_REFRESH_TOKEN);
+  error = NULL;
+
+  rest_oauth2_proxy_set_refresh_token (REST_OAUTH2_PROXY (proxy), "refresh_token");
+  rest_oauth2_proxy_refresh_access_token (REST_OAUTH2_PROXY (proxy), &error);
+
+  g_assert_cmpstr ("2YotnFZFEjr1zCsicMWpAA", ==, rest_oauth2_proxy_get_access_token (REST_OAUTH2_PROXY (proxy)));
+  g_assert_cmpstr ("tGzv3JOkF0XG5Qx2TlKWIA", ==, rest_oauth2_proxy_get_refresh_token (REST_OAUTH2_PROXY (proxy)));
+
+  rest_oauth2_proxy_set_refresh_token (REST_OAUTH2_PROXY (proxy), "refresh_token");
+  rest_oauth2_proxy_refresh_access_token (REST_OAUTH2_PROXY (proxy), NULL);
+
+  g_assert_cmpstr ("2YotnFZFEjr1zCsicMWpAA", ==, rest_oauth2_proxy_get_access_token (REST_OAUTH2_PROXY (proxy)));
+  g_assert_cmpstr ("tGzv3JOkF0XG5Qx2TlKWIA", ==, rest_oauth2_proxy_get_refresh_token (REST_OAUTH2_PROXY (proxy)));
+}
+
+static void
+test_access_token_expired (gconstpointer url)
+{
+  g_autofree gchar *tokenurl = g_strdup_printf ("%stoken", (gchar *)url);
+  g_autofree gchar *baseurl = g_strdup_printf ("%sapi", (gchar *)url);
+  g_autoptr(GError) error = NULL;
+
+  g_autoptr(RestProxy) proxy = REST_PROXY (rest_oauth2_proxy_new ("http://www.example.com/auth",
+                                                                  tokenurl,
+                                                                  "http://www.example.com",
+                                                                  "client-id",
+                                                                  "client-secret",
+                                                                  baseurl));
+  GDateTime *now = g_date_time_new_now_local ();
+  rest_oauth2_proxy_set_expiration_date (REST_OAUTH2_PROXY (proxy), now);
+
+  g_autoptr(RestProxyCall) call = rest_proxy_new_call (proxy);
+  rest_proxy_call_set_method (call, "GET");
+  rest_proxy_call_set_function (call, "/expired");
+  rest_proxy_call_sync (call, &error);
+  g_assert_error (error, REST_OAUTH2_ERROR, REST_OAUTH2_ERROR_ACCESS_TOKEN_EXPIRED);
+}
+
+static void
+test_access_token_invalid (gconstpointer url)
+{
+  GMainContext *async_context = g_main_context_ref_thread_default ();
+  g_autofree gchar *tokenurl = g_strdup_printf ("%stoken", (gchar *)url);
+  g_autofree gchar *baseurl = g_strdup_printf ("%sapi", (gchar *)url);
+  g_autoptr(GError) error = NULL;
+  gboolean finished = FALSE;
+
+  g_autoptr(RestProxy) proxy = REST_PROXY (rest_oauth2_proxy_new ("http://www.example.com/auth",
+                                                                  tokenurl,
+                                                                  "http://www.example.com",
+                                                                  "client-id",
+                                                                  "client-secret",
+                                                                  baseurl));
+
+  rest_oauth2_proxy_fetch_access_token_async (REST_OAUTH2_PROXY (proxy), "1234567890", "code_verifier", NULL, test_fetch_access_token_finished, &finished);
+  while (!finished) {
+    g_main_context_iteration (async_context, TRUE);
+  }
+
+  g_autoptr(RestProxyCall) call = rest_proxy_new_call (proxy);
+  rest_proxy_call_set_method (call, "GET");
+  rest_proxy_call_set_function (call, "/invalid");
+  rest_proxy_call_sync (call, &error);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, SOUP_STATUS_BAD_REQUEST);
+
+
+  g_main_context_unref (async_context);
+}
+
+gint
+main (gint   argc,
+      gchar *argv[])
+{
+  SoupServer *server;
+  g_autofree gchar *url;
+
   g_test_init (&argc, &argv, NULL);
-  g_test_add_func ("/oauth2/url-no-fragment", test_url_no_fragment);
-  g_test_add_func ("/oauth2/url-fragment-no-access-token", test_url_fragment_no_access_token);
-  g_test_add_func ("/oauth2/access-token-simple", test_access_token_simple);
-  g_test_add_func ("/oauth2/access-token-url-encoding", test_url_encoding_access_token);
+
+  server = test_server_new ();
+  soup_server_add_handler (server, NULL, server_callback, NULL, NULL);
+  test_server_run_in_thread (server);
+  url = test_server_get_uri (server, "http", NULL);
+
+  g_test_add_data_func ("/oauth2/authorization_url", url, test_authorization_url);
+  g_test_add_data_func ("/oauth2/fetch_access_token", url, test_fetch_access_token);
+  g_test_add_data_func ("/oauth2/refresh_access_token", url, test_refresh_access_token);
+  g_test_add_data_func ("/oauth2/refresh_access_token_sync", url, test_refresh_access_token_sync);
+  g_test_add_data_func ("/oauth2/access_token_expired", url, test_access_token_expired);
+  g_test_add_data_func ("/oauth2/access_token_invalid", url, test_access_token_invalid);
 
   return g_test_run ();
 }
diff --git a/tests/proxy.c b/tests/proxy.c
index d6c05a5..fc77869 100644
--- a/tests/proxy.c
+++ b/tests/proxy.c
@@ -35,49 +35,98 @@
 #include <stdlib.h>
 #include <libsoup/soup.h>
 #include <rest/rest-proxy.h>
+#include "helper/test-server.h"
 
 #if SOUP_CHECK_VERSION (2, 28, 0)
 /* Avoid deprecation warning with newer libsoup */
 #define soup_message_headers_get soup_message_headers_get_one
 #endif
 
-#define PORT 8080
-
-static int errors = 0;
-
-SoupServer *server;
-GMainLoop *server_loop;
-
-static void
 #ifdef WITH_SOUP_2
-server_callback (SoupServer *server, SoupMessage *msg,
-                 const char *path, GHashTable *query,
-                 SoupClientContext *client, gpointer user_data)
-#else
-server_callback (SoupServer *server, SoupServerMessage *msg,
-                 const char *path, GHashTable *query, gpointer user_data)
-#endif
+static void
+server_callback (SoupServer        *server,
+                 SoupMessage       *msg,
+                 const gchar       *path,
+                 GHashTable        *query,
+                 SoupClientContext *client,
+                 gpointer           user_data)
 {
-  if (g_str_equal (path, "/ping")) {
-#ifdef WITH_SOUP_2
+  if (g_str_equal (path, "/ping") && g_strcmp0 ("GET", msg->method) == 0) {
     soup_message_set_status (msg, SOUP_STATUS_OK);
-#else
-    soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
-#endif
+  }
+  else if (g_str_equal (path, "/ping") && g_strcmp0 ("POST", msg->method) == 0) {
+    soup_message_set_status (msg, SOUP_STATUS_NOT_FOUND);
   }
   else if (g_str_equal (path, "/echo")) {
     const char *value;
 
     value = g_hash_table_lookup (query, "value");
-#ifdef WITH_SOUP_2
     soup_message_set_response (msg, "text/plain", SOUP_MEMORY_COPY,
                                value, strlen (value));
     soup_message_set_status (msg, SOUP_STATUS_OK);
+  }
+  else if (g_str_equal (path, "/reverse")) {
+    char *value;
+
+    value = g_strdup (g_hash_table_lookup (query, "value"));
+    g_strreverse (value);
+    soup_message_set_response (msg, "text/plain", SOUP_MEMORY_TAKE,
+                               value, strlen (value));
+    soup_message_set_status (msg, SOUP_STATUS_OK);
+  }
+  else if (g_str_equal (path, "/status")) {
+    const char *value;
+    int status;
+
+    value = g_hash_table_lookup (query, "status");
+    if (value) {
+      status = atoi (value);
+      soup_message_set_status (msg, status ?: SOUP_STATUS_INTERNAL_SERVER_ERROR);
+    } else {
+      soup_message_set_status (msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
+    }
+  }
+  else if (g_str_equal (path, "/useragent/none")) {
+    SoupMessageHeaders *request_headers = msg->request_headers;
+
+    if (soup_message_headers_get (request_headers, "User-Agent") == NULL) {
+      soup_message_set_status (msg, SOUP_STATUS_OK);
+    } else {
+      soup_message_set_status (msg, SOUP_STATUS_EXPECTATION_FAILED);
+    }
+  }
+  else if (g_str_equal (path, "/useragent/testsuite")) {
+    SoupMessageHeaders *request_headers = msg->request_headers;
+    const char *value;
+    value = soup_message_headers_get (request_headers, "User-Agent");
+    if (g_strcmp0 (value, "TestSuite-1.0") == 0) {
+      soup_message_set_status (msg, SOUP_STATUS_OK);
+    } else {
+      soup_message_set_status (msg, SOUP_STATUS_EXPECTATION_FAILED);
+    }
+  }
+}
 #else
+static void
+server_callback (SoupServer        *server,
+                 SoupServerMessage *msg,
+                 const char        *path,
+                 GHashTable        *query,
+                 gpointer           user_data)
+{
+  if (g_str_equal (path, "/ping") && g_strcmp0 ("GET", soup_server_message_get_method (msg)) == 0) {
+    soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
+  }
+  else if (g_str_equal (path, "/ping") && g_strcmp0 ("POST", soup_server_message_get_method (msg)) == 0) {
+    soup_server_message_set_status (msg, SOUP_STATUS_NOT_FOUND, NULL);
+  }
+  else if (g_str_equal (path, "/echo")) {
+    const char *value;
+
+    value = g_hash_table_lookup (query, "value");
     soup_server_message_set_response (msg, "text/plain", SOUP_MEMORY_COPY,
                                       value, strlen (value));
     soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
-#endif
   }
   else if (g_str_equal (path, "/reverse")) {
     char *value;
@@ -85,15 +134,9 @@ server_callback (SoupServer *server, SoupServerMessage *msg,
     value = g_strdup (g_hash_table_lookup (query, "value"));
     g_strreverse (value);
 
-#ifdef WITH_SOUP_2
-    soup_message_set_response (msg, "text/plain", SOUP_MEMORY_TAKE,
-                               value, strlen (value));
-    soup_message_set_status (msg, SOUP_STATUS_OK);
-#else
     soup_server_message_set_response (msg, "text/plain", SOUP_MEMORY_TAKE,
                                        value, strlen (value));
     soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
-#endif
   }
   else if (g_str_equal (path, "/status")) {
     const char *value;
@@ -102,304 +145,184 @@ server_callback (SoupServer *server, SoupServerMessage *msg,
     value = g_hash_table_lookup (query, "status");
     if (value) {
       status = atoi (value);
-#ifdef WITH_SOUP_2
-      soup_message_set_status (msg, status ?: SOUP_STATUS_INTERNAL_SERVER_ERROR);
-#else
       soup_server_message_set_status (msg, status ?: SOUP_STATUS_INTERNAL_SERVER_ERROR, NULL);
-#endif
     } else {
-#ifdef WITH_SOUP_2
-      soup_message_set_status (msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
-#else
       soup_server_message_set_status (msg, SOUP_STATUS_INTERNAL_SERVER_ERROR, NULL);
-#endif
     }
   }
   else if (g_str_equal (path, "/useragent/none")) {
-#ifdef WITH_SOUP_2
-    SoupMessageHeaders *request_headers = msg->request_headers;
-#else
     SoupMessageHeaders *request_headers = soup_server_message_get_request_headers (msg);
-#endif
 
     if (soup_message_headers_get (request_headers, "User-Agent") == NULL) {
-#ifdef WITH_SOUP_2
-      soup_message_set_status (msg, SOUP_STATUS_OK);
-#else
       soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
-#endif
     } else {
-#ifdef WITH_SOUP_2
-      soup_message_set_status (msg, SOUP_STATUS_EXPECTATION_FAILED);
-#else
       soup_server_message_set_status (msg, SOUP_STATUS_EXPECTATION_FAILED, NULL);
-#endif
     }
   }
   else if (g_str_equal (path, "/useragent/testsuite")) {
-#ifdef WITH_SOUP_2
-    SoupMessageHeaders *request_headers = msg->request_headers;
-#else
     SoupMessageHeaders *request_headers = soup_server_message_get_request_headers (msg);
-#endif
     const char *value;
     value = soup_message_headers_get (request_headers, "User-Agent");
     if (g_strcmp0 (value, "TestSuite-1.0") == 0) {
-#ifdef WITH_SOUP_2
-      soup_message_set_status (msg, SOUP_STATUS_OK);
-#else
       soup_server_message_set_status (msg, SOUP_STATUS_OK, NULL);
-#endif
     } else {
-#ifdef WITH_SOUP_2
-      soup_message_set_status (msg, SOUP_STATUS_EXPECTATION_FAILED);
-#else
       soup_server_message_set_status (msg, SOUP_STATUS_EXPECTATION_FAILED, NULL);
-#endif
-
     }
   }
 }
+#endif
+
 
 static void
 ping_test (RestProxy *proxy)
 {
-  RestProxyCall *call;
+  g_autoptr(RestProxyCall) call;
   GError *error = NULL;
 
   call = rest_proxy_new_call (proxy);
   rest_proxy_call_set_function (call, "ping");
-
-  if (!rest_proxy_call_sync (call, &error)) {
-    g_printerr ("2: Call failed: %s\n", error->message);
-    g_error_free (error);
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_assert(error == NULL);
-
-  if (rest_proxy_call_get_status_code (call) != SOUP_STATUS_OK) {
-    g_printerr ("wrong response code\n");
-    errors++;
-    return;
-  }
-
-  if (rest_proxy_call_get_payload_length (call) != 0) {
-    g_printerr ("wrong length returned\n");
-    errors++;
-    return;
-  }
+  rest_proxy_call_set_method (call, "GET");
+  rest_proxy_call_sync (call, &error);
+  g_assert_no_error (error);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, SOUP_STATUS_OK);
+  g_assert_cmpint (rest_proxy_call_get_payload_length (call), ==, 0);
 
   g_object_unref (call);
+  call = rest_proxy_new_call (proxy);
+  rest_proxy_call_set_function (call, "ping");
+  rest_proxy_call_set_method (call, "POST");
+  rest_proxy_call_sync (call, &error);
+  g_assert_error (error, REST_PROXY_ERROR, 404);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, SOUP_STATUS_NOT_FOUND);
 }
 
 static void
 echo_test (RestProxy *proxy)
 {
-  RestProxyCall *call;
+  g_autoptr(RestProxyCall) call;
   GError *error = NULL;
 
   call = rest_proxy_new_call (proxy);
   rest_proxy_call_set_function (call, "echo");
   rest_proxy_call_add_param (call, "value", "echome");
-
-  if (!rest_proxy_call_sync (call, &error)) {
-    g_printerr ("3: Call failed: %s\n", error->message);
-    g_error_free (error);
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_assert(error == NULL);
-
-  if (rest_proxy_call_get_status_code (call) != SOUP_STATUS_OK) {
-    g_printerr ("wrong response code\n");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  if (rest_proxy_call_get_payload_length (call) != 6) {
-    g_printerr ("wrong length returned\n");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  if (g_strcmp0 ("echome", rest_proxy_call_get_payload (call)) != 0) {
-    g_printerr ("wrong string returned\n");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_object_unref (call);
+  rest_proxy_call_sync (call, &error);
+  g_assert_no_error (error);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, SOUP_STATUS_OK);
+  g_assert_cmpint (rest_proxy_call_get_payload_length (call), ==, 6);
+  g_assert_cmpstr (rest_proxy_call_get_payload (call), ==, "echome");
 }
 
 static void
 reverse_test (RestProxy *proxy)
 {
-  RestProxyCall *call;
+  g_autoptr(RestProxyCall) call;
   GError *error = NULL;
 
   call = rest_proxy_new_call (proxy);
   rest_proxy_call_set_function (call, "reverse");
   rest_proxy_call_add_param (call, "value", "reverseme");
-
-  if (!rest_proxy_call_sync (call, &error)) {
-    g_printerr ("4: Call failed: %s\n", error->message);
-    g_error_free (error);
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_assert(error == NULL);
-
-  if (rest_proxy_call_get_status_code (call) != SOUP_STATUS_OK) {
-    g_printerr ("wrong response code\n");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  if (rest_proxy_call_get_payload_length (call) != 9) {
-    g_printerr ("wrong length returned\n");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  if (g_strcmp0 ("emesrever", rest_proxy_call_get_payload (call)) != 0) {
-    g_printerr ("wrong string returned\n");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_object_unref (call);
+  rest_proxy_call_sync (call, &error);
+  g_assert_no_error (error);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, SOUP_STATUS_OK);
+  g_assert_cmpint (rest_proxy_call_get_payload_length (call), ==, 9);
+  g_assert_cmpstr (rest_proxy_call_get_payload (call), ==, "emesrever");
 }
 
 static void
 status_ok_test (RestProxy *proxy, guint status)
 {
-  RestProxyCall *call;
+  g_autoptr(RestProxyCall) call;
+  g_autofree gchar *status_str;
   GError *error = NULL;
-  char *status_str;
 
   call = rest_proxy_new_call (proxy);
   rest_proxy_call_set_function (call, "status");
   status_str = g_strdup_printf ("%d", status);
   rest_proxy_call_add_param (call, "status", status_str);
-  g_free (status_str);
-
-  if (!rest_proxy_call_sync (call, &error)) {
-    g_printerr ("1: Call failed: %s\n", error->message);
-    g_error_free (error);
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_assert(error == NULL);
-
-  if (rest_proxy_call_get_status_code (call) != status) {
-    g_printerr ("wrong response code, got %d\n", rest_proxy_call_get_status_code (call));
-    errors++;
-    return;
-  }
+  rest_proxy_call_sync (call, &error);
+  g_assert_no_error (error);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, status);
+}
 
-  g_object_unref (call);
+static void
+status_test (RestProxy *proxy)
+{
+  status_ok_test (proxy, SOUP_STATUS_OK);
+  status_ok_test (proxy, SOUP_STATUS_NO_CONTENT);
 }
 
 static void
 status_error_test (RestProxy *proxy, guint status)
 {
-  RestProxyCall *call;
-  GError *error = NULL;
-  char *status_str;
+  g_autoptr(RestProxyCall) call;
+  g_autoptr(GError) error = NULL;
+  g_autofree gchar *status_str;
 
   call = rest_proxy_new_call (proxy);
   rest_proxy_call_set_function (call, "status");
   status_str = g_strdup_printf ("%d", status);
   rest_proxy_call_add_param (call, "status", status_str);
-  g_free (status_str);
-
-  if (rest_proxy_call_sync (call, &error)) {
-    g_printerr ("Call succeeded should have failed");
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_error_free (error);
-
-  if (rest_proxy_call_get_status_code (call) != status) {
-    g_printerr ("wrong response code, got %d\n", rest_proxy_call_get_status_code (call));
-    errors++;
-    return;
-  }
+  rest_proxy_call_sync (call, &error);
+  g_assert_error (error, REST_PROXY_ERROR, status);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, status);
+}
 
-  g_object_unref (call);
+static void
+status_test_error (RestProxy *proxy)
+{
+  status_error_test (proxy, SOUP_STATUS_BAD_REQUEST);
+  status_error_test (proxy, SOUP_STATUS_NOT_IMPLEMENTED);
 }
 
 static void
 test_status_ok (RestProxy *proxy, const char *function)
 {
-  RestProxyCall *call;
-  GError *error = NULL;
+  g_autoptr(RestProxyCall) call;
+  g_autoptr(GError) error = NULL;
 
   call = rest_proxy_new_call (proxy);
   rest_proxy_call_set_function (call, function);
-
-  if (!rest_proxy_call_sync (call, &error)) {
-    g_printerr ("%s call failed: %s\n", function, error->message);
-    g_error_free (error);
-    errors++;
-    g_object_unref (call);
-    return;
-  }
-  g_assert(error == NULL);
-
-  if (rest_proxy_call_get_status_code (call) != SOUP_STATUS_OK) {
-    g_printerr ("wrong response code, got %d\n", rest_proxy_call_get_status_code (call));
-    errors++;
-    return;
-  }
-
-  g_object_unref (call);
+  rest_proxy_call_sync (call, &error);
+  g_assert_no_error (error);
+  g_assert_cmpint (rest_proxy_call_get_status_code (call), ==, SOUP_STATUS_OK);
 }
 
-static void *
-server_thread_func (gpointer data)
+static void
+test_user_agent (RestProxy *proxy)
 {
-  server_loop = g_main_loop_new (NULL, TRUE);
-  /*SoupServer *server = soup_server_new (NULL);*/
-  soup_server_add_handler (server, NULL, server_callback, NULL, NULL);
-
-  soup_server_listen_local (server, PORT, 0, NULL);
-  g_main_loop_run (server_loop);
-
-  return NULL;
+  test_status_ok (proxy, "useragent/none");
+  rest_proxy_set_user_agent (proxy, "TestSuite-1.0");
+  test_status_ok (proxy, "useragent/testsuite");
 }
 
 int
-main (int argc, char **argv)
+main (int     argc,
+      gchar **argv)
 {
-  char *url;
   RestProxy *proxy;
+  SoupServer *server;
+  gint ret;
+  gchar *uri;
 
-  server = soup_server_new (NULL);
-  g_thread_new ("Server Thread", server_thread_func, NULL);
+  g_test_init (&argc, &argv, NULL);
 
-  url = g_strdup_printf ("http://127.0.0.1:%d/", PORT);
-  proxy = rest_proxy_new (url, FALSE);
-  g_free (url);
+  server = test_server_new ();
+  soup_server_add_handler (server, NULL, server_callback, NULL, NULL);
+  test_server_run_in_thread (server);
+  uri = test_server_get_uri (server, "http", NULL);
 
-  ping_test (proxy);
-  echo_test (proxy);
-  reverse_test (proxy);
-  status_ok_test (proxy, SOUP_STATUS_OK);
-  status_ok_test (proxy, SOUP_STATUS_NO_CONTENT);
-  status_error_test (proxy, SOUP_STATUS_BAD_REQUEST);
-  status_error_test (proxy, SOUP_STATUS_NOT_IMPLEMENTED);
+  proxy = rest_proxy_new (uri, FALSE);
 
-  test_status_ok (proxy, "useragent/none");
-  rest_proxy_set_user_agent (proxy, "TestSuite-1.0");
-  test_status_ok (proxy, "useragent/testsuite");
+  g_test_add_data_func ("/proxy/ping", proxy, ping_test);
+  g_test_add_data_func ("/proxy/echo", proxy, echo_test);
+  g_test_add_data_func ("/proxy/reverse", proxy, reverse_test);
+  g_test_add_data_func ("/proxy/status_ok_test", proxy, status_test);
+  g_test_add_data_func ("/proxy/status_error_test", proxy, status_test_error);
+  g_test_add_data_func ("/proxy/user_agent", proxy, test_user_agent);
+
+  ret = g_test_run ();
+
+	g_main_context_unref (g_main_context_default ());
 
-  g_main_loop_quit (server_loop);
-  return errors != 0;
+  return ret;
 }