From 612b433d37f82aaadc5342fbdc99b45d66da0e52 Mon Sep 17 00:00:00 2001
From: aforge <aforge@>
Date: Mon, 20 Feb 2023 19:38:54 -0800
Subject: [PATCH] CallFrament: check if data channel is available before
 sending data.

---
 app/src/main/java/co/tinode/tindroid/CallFragment.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/co/tinode/tindroid/CallFragment.java b/app/src/main/java/co/tinode/tindroid/CallFragment.java
index 8095523b..0e5e0800 100644
--- a/app/src/main/java/co/tinode/tindroid/CallFragment.java
+++ b/app/src/main/java/co/tinode/tindroid/CallFragment.java
@@ -642,8 +642,12 @@ private void handleSendAnswer(SessionDescription sd) {
     }
 
     private void sendToPeer(String msg) {
-        mDataChannel.send(new DataChannel.Buffer(
-                ByteBuffer.wrap(msg.getBytes(StandardCharsets.UTF_8)), false));
+        if (mDataChannel != null) {
+            mDataChannel.send(new DataChannel.Buffer(
+                    ByteBuffer.wrap(msg.getBytes(StandardCharsets.UTF_8)), false));
+        } else {
+            Log.w(TAG, "Data channel is null. Peer will not receive the message: '" + msg + "'");
+        }
     }
 
     // Data channel observer for receiving video mute/unmute events.