stream: add support for setting a proxy

If the stream claims to support this feature, we can let the transport
set the proxy.

We also set HTTPPROXYTUNNEL option so curl can create a tunnel through
the proxy which lets us create our own TLS session (if needed).

1 files changed, 15 insertions, 0 deletions

diff --git a/src/stream.h b/src/stream.h
index d810e704d..43fcc3045 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -30,6 +30,21 @@ GIT_INLINE(int) git_stream_certificate(git_cert **out, git_stream *st)
 	return st->certificate(out, st);
 }
 
+GIT_INLINE(int) git_stream_supports_proxy(git_stream *st)
+{
+	return st->proxy_support;
+}
+
+GIT_INLINE(int) git_stream_set_proxy(git_stream *st, const char *proxy_url)
+{
+	if (!st->proxy_support) {
+		giterr_set(GITERR_INVALID, "proxy not supported on this stream");
+		return -1;
+	}
+
+	return st->set_proxy(st, proxy_url);
+}
+
 GIT_INLINE(ssize_t) git_stream_read(git_stream *st, void *data, size_t len)
 {
 	return st->read(st, data, len);