Multicast socket API

net/udp/udp_socket_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/udp/udp_client_socket.h"
 #include "net/udp/udp_server_socket.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
@@ skipping 508 matching lines @@
   TestCompletionCallback callback;
   IPEndPoint from;
   rv = server.RecvFrom(buffer_, kMaxRead, &from, callback.callback());
   EXPECT_EQ(rv, ERR_IO_PENDING);
 
   server.Close();
 
   EXPECT_FALSE(callback.have_result());
 }
 
+TEST_F(UDPSocketTest, JoinMulticastGroup) {
+  const int kPort = 9999;
+  IPEndPoint bind_address;
+  CreateUDPAddress("0.0.0.0", kPort, &bind_address);
+
+  const char* kGroup = "237.132.100.17";

[wtc, 2013/04/17 22:06:50]

This should be
  const char* const kGroup = ...;
so that kGroup itself is constant (rather than the thing it
points to is constant).

[Bei Zhang, 2013/04/19 19:40:14]

Done.

+  net::IPAddressNumber group_ip;

[wtc, 2013/04/17 22:06:50]

Remove net:: because this is inside the net namespace.

[Bei Zhang, 2013/04/19 19:40:14]

Done.

+  EXPECT_TRUE(net::ParseIPLiteralToNumber(kGroup, &group_ip));
+
+  scoped_ptr<UDPSocket> socket(
+      new UDPSocket(DatagramSocket::DEFAULT_BIND,
+                    RandIntCallback(),
+                    NULL,
+                    NetLog::Source()));

[wtc, 2013/04/17 22:06:50]

Nit: it doesn't seem necessary to use a scoped_ptr:

  UDPSocket socket(DatagramSocket::DEFAULT_BIND,
                   ...);

should also work.

[Bei Zhang, 2013/04/19 19:40:14]

Done.

+  EXPECT_EQ(OK, socket->Bind(bind_address));
+  EXPECT_EQ(OK, socket->JoinGroup(group_ip));
+  // Joining group multiple times.
+  EXPECT_EQ(ERR_ADDRESS_IN_USE, socket->JoinGroup(group_ip));
+  EXPECT_EQ(OK, socket->LeaveGroup(group_ip));
+  // Leaving group multiple times.
+  EXPECT_EQ(ERR_ADDRESS_INVALID, socket->LeaveGroup(group_ip));
+
+  socket->Close();
+}
+
+TEST_F(UDPSocketTest, MulticastOptions) {
+  const int kPort = 9999;
+  IPEndPoint bind_address;
+  CreateUDPAddress("0.0.0.0", kPort, &bind_address);
+
+  scoped_ptr<UDPSocket> socket(
+      new UDPSocket(DatagramSocket::DEFAULT_BIND,
+                    RandIntCallback(),
+                    NULL,
+                    NetLog::Source()));
+  // Before binding.
+  EXPECT_EQ(OK, socket->SetMulticastLoopbackMode(false));
+  EXPECT_EQ(OK, socket->SetMulticastLoopbackMode(true));
+  EXPECT_EQ(OK, socket->SetMulticastTimeToLive(0));
+  EXPECT_EQ(OK, socket->SetMulticastTimeToLive(3));
+  EXPECT_EQ(ERR_INVALID_ARGUMENT, socket->SetMulticastTimeToLive(-1));
+
+  EXPECT_EQ(OK, socket->Bind(bind_address));
+
+  socket->Close();
+}
+
 }  // namespace
 
 }  // namespace net