From 4720b575b69dff7be48815adaef33088fbc2c184 Mon Sep 17 00:00:00 2001
From: Mathieu Duponchelle <mathieu@centricular.com>
Date: Fri, 29 Nov 2024 18:52:41 +0100
Subject: [PATCH] webrtscink: fix deadlock when answering

Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/637
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1955>
---
 net/webrtc/src/webrtcsink/imp.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/webrtc/src/webrtcsink/imp.rs b/net/webrtc/src/webrtcsink/imp.rs
index 576876f8..3abdb6d0 100644
--- a/net/webrtc/src/webrtcsink/imp.rs
+++ b/net/webrtc/src/webrtcsink/imp.rs
@@ -2416,7 +2416,9 @@ impl BaseWebRTCSink {
         let signaller = settings.signaller.clone();
         drop(settings);
 
-        if let Some(session) = self.state.lock().unwrap().sessions.get(session_id).cloned() {
+        let session = self.state.lock().unwrap().sessions.get(session_id).cloned();
+
+        if let Some(session) = session {
             let mut session = session.0.lock().unwrap();
             let sdp = answer.sdp();