Multicast socket API

net/udp/udp_socket_win.h

Index: net/udp/udp_socket_win.h
diff --git a/net/udp/udp_socket_win.h b/net/udp/udp_socket_win.h
index ce17050583efd9e307418940cff034242ad4e473..000fe8ccff4e7c6b7e8d9dfbbbadb615f76d943f 100644
--- a/net/udp/udp_socket_win.h
+++ b/net/udp/udp_socket_win.h
@@ -7,6 +7,7 @@
 
 #include <winsock2.h>
 
+#include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
@@ -115,6 +116,14 @@ class NET_EXPORT UDPSocketWin : NON_EXPORTED_BASE(public base::NonThreadSafe) {
   // called before Bind().
   void AllowBroadcast();
 
+  int JoinGroup(const net::IPAddressNumber& group_address) const;

[scheib, 2013/04/02 18:25:17]

Comment these member functions.

[Bei Zhang, 2013/04/05 00:38:59]

Done.

+
+  int LeaveGroup(const net::IPAddressNumber& group_address) const;
+
+  int SetMulticastTimeToLive(int timeToLive);
+
+  int SetMulticastLoopbackMode(bool loopback);
+
  private:
   enum SocketOptions {
     SOCKET_OPTION_REUSE_ADDRESS = 1 << 0,
@@ -160,6 +169,7 @@ class NET_EXPORT UDPSocketWin : NON_EXPORTED_BASE(public base::NonThreadSafe) {
   bool ReceiveAddressToIPEndpoint(IPEndPoint* address) const;
 
   SOCKET socket_;
+  int sock_addr_family_;
 
   // Bitwise-or'd combination of SocketOptions. Specifies the set of
   // options that should be applied to |socket_| before Bind().