Pepper: Add support for multicast in PPB_UDPSocket API

ppapi/tests/test_udp_socket.cc

Index: ppapi/tests/test_udp_socket.cc
diff --git a/ppapi/tests/test_udp_socket.cc b/ppapi/tests/test_udp_socket.cc
index e0b76f47728b3ae9100378f9f5fe42b57ebdeb30..a33fef2cf220403ae0d6772949898c987d475353 100644
--- a/ppapi/tests/test_udp_socket.cc
+++ b/ppapi/tests/test_udp_socket.cc
@@ -83,6 +83,7 @@ void TestUDPSocket::RunTests(const std::string& filter) {
   RUN_CALLBACK_TEST(TestUDPSocket, ReadWrite, filter);
   RUN_CALLBACK_TEST(TestUDPSocket, Broadcast, filter);
   RUN_CALLBACK_TEST(TestUDPSocket, SetOption, filter);
+  RUN_CALLBACK_TEST(TestUDPSocket, Multicast, filter);
 }
 
 std::string TestUDPSocket::GetLocalAddress(pp::NetAddress* address) {
@@ -185,6 +186,29 @@ std::string TestUDPSocket::PassMessage(pp::UDPSocket* target,
   PASS();
 }
 
+std::string TestUDPSocket::SetMulticastOptions(pp::UDPSocket* socket) {
+  TestCompletionCallback callback_1(instance_->pp_instance(), callback_type());
+  callback_1.WaitForResult(socket->SetOption(
+      PP_UDPSOCKET_OPTION_MULTICAST_LOOP, pp::Var(true),
+      callback_1.GetCallback()));
+  CHECK_CALLBACK_BEHAVIOR(callback_1);
+  ASSERT_EQ(PP_OK, callback_1.result());
+
+  TestCompletionCallback callback_2(instance_->pp_instance(), callback_type());
+  callback_2.WaitForResult(socket->SetOption(
+      PP_UDPSOCKET_OPTION_MULTICAST_TTL, pp::Var(1), callback_2.GetCallback()));
+  CHECK_CALLBACK_BEHAVIOR(callback_2);
+  ASSERT_EQ(PP_OK, callback_2.result());
+
+  TestCompletionCallback callback_3(instance_->pp_instance(), callback_type());
+  callback_3.WaitForResult(socket->SetOption(
+      PP_UDPSOCKET_OPTION_IF, pp::Var(1), callback_3.GetCallback()));
+  CHECK_CALLBACK_BEHAVIOR(callback_3);
+  ASSERT_EQ(PP_OK, callback_3.result());
+
+  PASS();
+}
+
 std::string TestUDPSocket::TestReadWrite() {
   pp::UDPSocket server_socket(instance_), client_socket(instance_);
   pp::NetAddress server_address, client_address;
@@ -259,6 +283,7 @@ std::string TestUDPSocket::TestSetOption() {
   pp::UDPSocket socket(instance_);
 
   ASSERT_SUBTEST_SUCCESS(SetBroadcastOptions(&socket));
+  ASSERT_SUBTEST_SUCCESS(SetMulticastOptions(&socket));
 
   // Try to pass incorrect option value's type.
   TestCompletionCallback callback(instance_->pp_instance(), callback_type());
@@ -316,3 +341,11 @@ std::string TestUDPSocket::TestSetOption() {
 
   PASS();
 }
+
+std::string TestUDPSocket::TestMulticast() {
+  pp::UDPSocket server1(instance_), server2(instance_);
+
+  ASSERT_SUBTEST_SUCCESS(SetMulticastOptions(&server1));
+  ASSERT_SUBTEST_SUCCESS(SetMulticastOptions(&server2));
+  PASS();
+}