Gets the peer address (if available) in server requests.

net/socket/stream_listen_socket.cc

Index: net/socket/stream_listen_socket.cc
diff --git a/net/socket/stream_listen_socket.cc b/net/socket/stream_listen_socket.cc
index 960991b7c6da0be28862155cccf74cea0e56ffb6..e5232afdf8a7af6d7b57661efd8382426c217b97 100644
--- a/net/socket/stream_listen_socket.cc
+++ b/net/socket/stream_listen_socket.cc
@@ -100,6 +100,23 @@ int StreamListenSocket::GetLocalAddress(IPEndPoint* address) {
   return OK;
 }
 
+int StreamListenSocket::GetPeerAddress(IPEndPoint* address) {
+  SockaddrStorage storage;
+  if (getpeername(socket_, storage.addr, &storage.addr_len)) {
+#if defined(OS_WIN)
+    int err = WSAGetLastError();
+#else
+    int err = errno;
+#endif
+    return MapSystemError(err);
+  }
+
+  if (!address->FromSockAddr(storage.addr, storage.addr_len))
+    return ERR_ADDRESS_INVALID;
+
+  return OK;
+}
+
 SocketDescriptor StreamListenSocket::AcceptSocket() {
   SocketDescriptor conn = HANDLE_EINTR(accept(socket_, NULL, NULL));
   if (conn == kInvalidSocket)