Add quirk for RTSP servers

Some RTSP Servers expect only the path, not the full url, for DESCRIBE, SETUP, and PLAY commands.

plugins/janus_streaming.c

@@ -1096,6 +1096,7 @@ typedef struct janus_streaming_rtp_source {
 	janus_streaming_buffer *curldata;
 	char *rtsp_url;
 	char *rtsp_username, *rtsp_password;
+        char *rtsp_stream_uri;
 	gint64 ka_timeout;
 	char *rtsp_ahost, *rtsp_vhost;
 	gboolean reconnecting;
@@ -5795,6 +5796,7 @@ static void janus_streaming_rtp_source_free(janus_streaming_rtp_source *source)
 	g_free(source->rtsp_url);
 	g_free(source->rtsp_username);
 	g_free(source->rtsp_password);
+	curl_free(source->rtsp_stream_uri);
 	g_free(source->rtsp_ahost);
 	g_free(source->rtsp_vhost);
 	janus_mutex_unlock(&source->rtsp_mutex);
@@ -6519,6 +6521,23 @@ static int janus_streaming_rtsp_connect_to_server(janus_streaming_mountpoint *mp
 	}
 	long code = 0;
 	res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+#if CURL_AT_LEAST_VERSION(7, 62, 0)
+	if(code == 404) { //Possibly a quirk in the RTSP server, where the DESCRIBE request expects a path only.
+		CURLU *curl_u;
+		char *path;
+		curl_u = curl_url();
+		if(!(curl_url_set(curl_u, CURLUPART_URL, source->rtsp_url, 0))) {
+			if(!(curl_url_get(curl_u, CURLUPART_PATH, &path, 0))) {
+				curl_easy_setopt(curl, CURLOPT_RTSP_STREAM_URI, path);
+				res = curl_easy_perform(curl);
+                                source->rtsp_stream_uri = path;
+				//curl_free(path);
+				res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+			}
+		}
+		curl_url_cleanup(curl_u);
+	}
+#endif
 	if(res != CURLE_OK) {
 		JANUS_LOG(LOG_ERR, "Couldn't get DESCRIBE answer: %s\n", curl_easy_strerror(res));
 		curl_easy_cleanup(curl);
@@ -7073,7 +7092,10 @@ static int janus_streaming_rtsp_play(janus_streaming_rtp_source *source) {
 	source->curldata->buffer = g_malloc0(1);
 	source->curldata->size = 0;
 	JANUS_LOG(LOG_VERB, "Sending PLAY request...\n");
-	curl_easy_setopt(source->curl, CURLOPT_RTSP_STREAM_URI, source->rtsp_url);
+	if(source->rtsp_stream_uri)
+		curl_easy_setopt(source->curl, CURLOPT_RTSP_STREAM_URI, source->rtsp_stream_uri);
+	else
+		curl_easy_setopt(source->curl, CURLOPT_RTSP_STREAM_URI, source->rtsp_url);
 	curl_easy_setopt(source->curl, CURLOPT_RANGE, "npt=0.000-");
 	curl_easy_setopt(source->curl, CURLOPT_RTSP_REQUEST, (long)CURL_RTSPREQ_PLAY);
 	int res = curl_easy_perform(source->curl);
@@ -7166,6 +7188,7 @@ janus_streaming_mountpoint *janus_streaming_create_rtsp_source(
 	live_rtsp_source->rtsp_url = g_strdup(url);
 	live_rtsp_source->rtsp_username = username ? g_strdup(username) : NULL;
 	live_rtsp_source->rtsp_password = password ? g_strdup(password) : NULL;
+	live_rtsp_source->rtsp_stream_uri = NULL;
 	live_rtsp_source->arc = NULL;
 	live_rtsp_source->vrc = NULL;
 	live_rtsp_source->drc = NULL;