Add remoteHost to Socket.

runtime/bin/socket_win.cc

Index: runtime/bin/socket_win.cc
diff --git a/runtime/bin/socket_win.cc b/runtime/bin/socket_win.cc
index fc48ecfe3eb00872e78f6b32536a72ababe4cca0..7be145822927f0c6dbc0de870138835c7245eb24 100644
--- a/runtime/bin/socket_win.cc
+++ b/runtime/bin/socket_win.cc
@@ -54,7 +54,8 @@ intptr_t Socket::GetPort(intptr_t fd) {
 }
 
 
-intptr_t Socket::GetRemotePort(intptr_t fd) {
+bool Socket::GetRemotePeer(intptr_t fd, char *host, intptr_t *port) {
+  ASSERT(DART_INET_ADDRSTRLEN >= INET_ADDRSTRLEN);
   ASSERT(reinterpret_cast<Handle*>(fd)->is_socket());
   SocketHandle* socket_handle = reinterpret_cast<SocketHandle*>(fd);
   struct sockaddr_in socket_address;
@@ -63,10 +64,17 @@ intptr_t Socket::GetRemotePort(intptr_t fd) {
                   reinterpret_cast<struct sockaddr *>(&socket_address),
                   &size)) {
     fprintf(stderr, "Error getpeername: %s\n", strerror(errno));
-    return 0;
+    return false;
   }
-  return ntohs(socket_address.sin_port);
-}
+  if (inet_ntop(socket_address.sin_family,
+                reinterpret_cast<const void *>(&socket_address.sin_addr),
+                host,
+                INET_ADDRSTRLEN) == NULL) {
+    fprintf(stderr, "Error inet_ntop: %s\n", strerror(errno));
+    return false;
+  }
+  *port = ntohs(socket_address.sin_port);
+  return true;
 
 
 intptr_t Socket::CreateConnect(const char* host, const intptr_t port) {