From 261122a674f26e632585f4c8988d305036e86971 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Przemys=C5=82aw=20Ro=C5=BCnawski?=
 <48837433+roznawsk@users.noreply.github.com>
Date: Thu, 10 Oct 2024 13:47:52 +0200
Subject: [PATCH] Fix handling RTCP when there is no track (#170)

---
 lib/ex_webrtc/peer_connection.ex | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/ex_webrtc/peer_connection.ex b/lib/ex_webrtc/peer_connection.ex
index 4f2dcda..065d766 100644
--- a/lib/ex_webrtc/peer_connection.ex
+++ b/lib/ex_webrtc/peer_connection.ex
@@ -2063,6 +2063,9 @@ defmodule ExWebRTC.PeerConnection do
         nil ->
           {nil, state}
 
+        {%{sender: %{track: nil}}, _idx} ->
+          {nil, state}
+
         # in case NACK was received, but RTX was not negotiated
         # as NACK and RTX are negotiated independently
         {%{sender: %{rtx_pt: nil}} = tr, _idx} ->
@@ -2087,6 +2090,9 @@ defmodule ExWebRTC.PeerConnection do
       nil ->
         {nil, state}
 
+      {%{sender: %{track: nil}}, _idx} ->
+        {nil, state}
+
       {tr, idx} ->
         tr = RTPTransceiver.receive_pli(tr, pli)
         transceivers = List.replace_at(state.transceivers, idx, tr)