Add patch to prevent timeout with certain sinks

https://github.com/benzea/gnome-network-displays/issues/20

0001-wfd-Always-touch-session-for-incoming-packets.patch

@@ -0,0 +1,57 @@
+From 6afa893c7f58ad3a511791ae1f55bca5584c3196 Mon Sep 17 00:00:00 2001
+From: Benjamin Berg <bberg@redhat.com>
+Date: Fri, 20 Dec 2019 15:00:05 +0100
+Subject: [PATCH] wfd: Always touch session for incoming packets
+
+It turns out that some adapters (specifically MS v2 adapters) do not
+reply with the session ID for the keep-alive packet. In this case the
+gstreamer RTSP server will not automatically touch the GstRTSPSession
+and we will run into the session timeout.
+
+Fix this by simply touching all session for the client, for any received
+response.
+
+See: #20
+---
+ src/wfd/wfd-client.c | 20 ++++++++++++++++++++
+ 1 file changed, 20 insertions(+)
+
+diff --git a/src/wfd/wfd-client.c b/src/wfd/wfd-client.c
+index 38b385e..258d1d0 100644
+--- a/src/wfd/wfd-client.c
++++ b/src/wfd/wfd-client.c
+@@ -275,11 +275,31 @@ wfd_client_idle_set_params (gpointer user_data)
+   return G_SOURCE_REMOVE;
+ }
+ 
++GstRTSPFilterResult
++wfd_client_touch_session_filter_func (GstRTSPClient  *client,
++                                      GstRTSPSession *sess,
++                                      gpointer        user_data)
++{
++  gst_rtsp_session_touch (sess);
++
++  return GST_RTSP_FILTER_KEEP;
++}
++
+ void
+ wfd_client_handle_response (GstRTSPClient * client, GstRTSPContext *ctx)
+ {
+   WfdClient *self = WFD_CLIENT (client);
+ 
++  /* Some sinks do not reply with the correct session-id. Which causes
++   * gst-rtsp-server to not touch the session, triggering a timeout
++   * even though the sink actually replied.
++   *
++   * Work around this by explicitly touching the session (again). And
++   * to do that, just touch all of them, which is acceptable as we will
++   * only have one.
++   */
++  gst_rtsp_client_session_filter (client, wfd_client_touch_session_filter_func, NULL);
++
+   /* Track the initialization process and possibly trigger the
+    * next state of the connection establishment. */
+   switch (self->init_state)
+-- 
+2.24.1
+

gnome-network-displays.spec

@@ -1,6 +1,6 @@
 Name:           gnome-network-displays
 Version:        0.90.2
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Stream the desktop to Wi-Fi Display capable devices
 
 # The icon is licensed CC-BY-SA
@@ -27,6 +27,8 @@ Requires: gtk3
 Requires: hicolor-icon-theme
 Requires: NetworkManager-wifi
 
+Patch0: 0001-wfd-Always-touch-session-for-incoming-packets.patch
+
 %description
 GNOME Network Displays allows you to cast your desktop to a remote display.
 Currently implemented is support for casting to Wi-Fi Display capable devices
@@ -56,6 +58,10 @@ appstream-util validate-relax --nonet %{buildroot}%{_metainfodir}/*.appdata.xml
 %{_metainfodir}/org.gnome.NetworkDisplays.appdata.xml
 
 %changelog
+* Fri Dec 20 2019 Benjamin Berg <bberg@redhat.com> - 0.90.2-2
+- Add patch to prevent timeout with certain sinks
+  https://github.com/benzea/gnome-network-displays/issues/20
+
 * Mon Dec 16 2019 Benjamin Berg <bberg@redhat.com> - 0.90.2-1
 - New upstream release 0.90.2 with bugfixes