Moving MediaStreamSignaling logic into PeerConnection.

talk/app/webrtc/peerconnectionendtoend_unittest.cc

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 346 matching lines @@
 
   caller_dc_1->Send(webrtc::DataBuffer(message_1));
   EXPECT_EQ_WAIT(message_1, dc_1_observer->last_message(), kMaxWait);
 
   caller_dc_2->Send(webrtc::DataBuffer(message_2));
   EXPECT_EQ_WAIT(message_2, dc_2_observer->last_message(), kMaxWait);
 
   EXPECT_EQ(1U, dc_1_observer->received_message_count());
   EXPECT_EQ(1U, dc_2_observer->received_message_count());
 }
+
+// Verifies that a DataChannel added from an OPEN message functions after
+// a channel has been previously closed (webrtc issue 3778).
+// This previously failed because the new channel re-uses the ID of the closed
+// channel, and the closed channel was incorrectly still assigned to the id.
+TEST_F(PeerConnectionEndToEndTest, DataChannelFromOpenWorksAfterClose) {
+  MAYBE_SKIP_TEST(rtc::SSLStreamAdapter::HaveDtlsSrtp);
+
+  CreatePcs();
+
+  webrtc::DataChannelInit init;
+  rtc::scoped_refptr<DataChannelInterface> caller_dc(
+      caller_->CreateDataChannel("data", init));
+
+  Negotiate();
+  WaitForConnection();
+
+  WaitForDataChannelsToOpen(caller_dc, callee_signaled_data_channels_, 0);
+  CloseDataChannels(caller_dc, callee_signaled_data_channels_, 0);
+
+  // Create a new channel and ensure it works after closing the previous one.
+  caller_dc = caller_->CreateDataChannel("data2", init);
+
+  WaitForDataChannelsToOpen(caller_dc, callee_signaled_data_channels_, 1);
+  TestDataChannelSendAndReceive(caller_dc, callee_signaled_data_channels_[1]);
+
+  CloseDataChannels(caller_dc, callee_signaled_data_channels_, 1);
+}