proxy: don't specify the protocol in the type

We leave this up to the scheme in the url field. The type should only
tell us about whether we want a proxy and whether we want to auto-detect
it.

include/git2/proxy.h

@@ -18,6 +18,9 @@ GIT_BEGIN_DECL
 typedef enum {
 	/**
 	 * Do not attempt to connect through a proxy
+	 *
+	 * If built against lbicurl, it itself may attempt to connect
+	 * to a proxy if the environment variables specify it.
 	 */
 	GIT_PROXY_NONE,
 	/**
@@ -25,17 +28,9 @@ typedef enum {
 	 */
 	GIT_PROXY_AUTO,
 	/**
-	 * Connect through a HTTP proxy
-	 */
-	GIT_PROXY_HTTP,
-	/**
-	 * Connect through a SOCKS v4 proxy
-	 */
-	GIT_PROXY_SOCKS4,
-	/**
-	 * Connect through a SOCKS v5 proxy
+	 * Connect via the URL given in the options
 	 */
-	GIT_PROXY_SOCKS5,
+	GIT_PROXY_SPECIFIED,
 } git_proxy_t;
 
 /**

src/transports/http.c

@@ -575,7 +575,7 @@ static int apply_proxy_config(http_subtransport *t)
 		if ((error = git_remote__get_http_proxy(t->owner->owner, !!t->connection_data.use_ssl, &url)) < 0)
 			return error;
 
-		opts.type = GIT_PROXY_HTTP;
+		opts.type = GIT_PROXY_SPECIFIED;
 		opts.url = url;
 		error = git_stream_set_proxy(t->io, &opts);
 		git__free(url);

src/transports/winhttp.c

@@ -381,7 +381,7 @@ static int winhttp_stream_connect(winhttp_stream *s)
 		if (git_remote__get_http_proxy(t->owner->owner, !!t->connection_data.use_ssl, &proxy_url) < 0)
 			goto on_error;
 	}
-	else if (proxy_opts->type == GIT_PROXY_HTTP) {
+	else if (proxy_opts->type == GIT_PROXY_SPECIFIED) {
 		proxy_url = git__strdup(proxy_opts->url);
 		GITERR_CHECK_ALLOC(proxy_url);
 	}

tests/online/clone.c

@@ -678,7 +678,7 @@ void test_online_clone__proxy_credentials_request(void)
 	if (!_remote_proxy_url || !_remote_proxy_user || !_remote_proxy_pass)
 		cl_skip();
 
-	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_HTTP;
+	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_SPECIFIED;
 	g_options.fetch_opts.proxy_opts.url = _remote_proxy_url;
 	g_options.fetch_opts.proxy_opts.credentials = proxy_creds;
 	called_proxy_creds = 0;
@@ -691,7 +691,7 @@ void test_online_clone__proxy_credentials_in_url(void)
 	if (!_remote_proxy_url)
 		cl_skip();
 
-	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_HTTP;
+	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_SPECIFIED;
 	g_options.fetch_opts.proxy_opts.url = _remote_proxy_url;
 	called_proxy_creds = 0;
 	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));