Merge r1770786 from trunk:

remove Location: header checks for absolute URL

https://tools.ietf.org/html/rfc7231#section-7.1.2

   The "Location" header field is used in some responses to refer to a
   specific resource in relation to the response.  The type of
   relationship is defined by the combination of request method and
   status code semantics.

     Location = URI-reference

   The field value consists of a single URI-reference.  When it has the
   form of a relative reference ([RFC3986], Section 4.2), the final
   value is computed by resolving it against the effective request URI
   ([RFC3986], Section 5).


There is even an example with no scheme:

     Location: /People.html#tim




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x-merge-http-strict@1770789 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 0 insertions, 20 deletions

diff --git a/modules/http/http_filters.c b/modules/http/http_filters.c
index 94595b4113..d3e634e2d3 100644
--- a/modules/http/http_filters.c
+++ b/modules/http/http_filters.c
@@ -749,27 +749,7 @@ static APR_INLINE int check_headers(request_rec *r)
     if (!apr_table_do(check_header, &ctx, r->headers_out, NULL))
         return 0; /* problem has been logged by check_header() */
 
-    if ((loc = apr_table_get(r->headers_out, "Location")) != NULL) {
-        const char *scheme_end = ap_strchr_c(loc, ':');
-
-        /*
-         * Check that the URI has a valid scheme and is absolute
-         * XXX Should we do a full uri parse here?
-         */
-        if (!ap_is_url(loc))
-            goto bad;
-
-        if (scheme_end[1] != '/' || scheme_end[2] != '/')
-            goto bad;
-    }
-
     return 1;
-
-bad:
-    ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02431)
-                  "Bad Location header in response: '%s', aborting request",
-                  loc);
-    return 0;
 }
 
 typedef struct header_struct {