test for ignoring empty rtp-over-tcp frames

BUG=1043805

Change-Id: I433b5c67f62f304e71777d33909fd026b8583a82
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2024847Reviewed-by: Harald Alvestrand <hta@chromium.org>
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Cr-Commit-Position: refs/heads/master@{#739301}

services/network/p2p/socket_tcp_unittest.cc

@@ -332,6 +332,24 @@ TEST_F(P2PSocketTcpTest, SendDataWithPacketOptions) {
   base::RunLoop().RunUntilIdle();
 }
 
+// Verify that we ignore an empty frame.
+TEST_F(P2PSocketTcpTest, IgnoreEmptyFrame) {
+  std::vector<int8_t> response_packet;
+  CreateStunResponse(&response_packet);
+
+  std::string received_data;
+  received_data.append(IntToSize(response_packet.size()));
+  received_data.append(response_packet.begin(), response_packet.end());
+  socket_->AppendInputData(&received_data[0], received_data.size());
+
+  std::vector<int8_t> empty_packet;
+  received_data.resize(0);
+  received_data.append(IntToSize(empty_packet.size()));
+  received_data.append(empty_packet.begin(), empty_packet.end());
+  socket_->AppendInputData(&received_data[0], received_data.size());
+  EXPECT_CALL(*fake_client_.get(), DataReceived(_, _, _)).Times(0);
+}
+
 // Verify that we can send STUN message and that they are formatted
 // properly.
 TEST_F(P2PSocketStunTcpTest, SendStunNoAuth) {