Use uint16 for port numbers more pervasively.

media/cast/test/utility/udp_proxy_main.cc

 // Copyright 2014 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 <cstdio>
 #include <cstdlib>
 #include <deque>
 #include <string>
 
 #include "base/at_exit.h"
@@ skipping 135 matching lines @@
 
   if (argc == 5) {
     // V2 proxy
     CHECK(net::ParseIPLiteralToNumber(argv[2], &remote_ip_number));
     remote_port = atoi(argv[3]);
     network_type = argv[4];
   } else {
     // V1 proxy
     network_type = argv[2];
   }
-  net::IPEndPoint remote_endpoint(remote_ip_number, remote_port);
-  net::IPEndPoint local_endpoint(local_ip_number, local_port);
+  if (local_port < 0 || local_port > 65535 || remote_port < 0 ||
+      remote_port > 65535) {
+    fprintf(stderr, "Port numbers must be between 0 and 65535\n");
+    exit(1);
+  }
+  net::IPEndPoint remote_endpoint(remote_ip_number,
+                                  static_cast<uint16>(remote_port));
+  net::IPEndPoint local_endpoint(local_ip_number,
+                                 static_cast<uint16>(local_port));
   scoped_ptr<media::cast::test::PacketPipe> in_pipe, out_pipe;
   scoped_ptr<media::cast::test::InterruptedPoissonProcess> ipp(
       media::cast::test::DefaultInterruptedPoissonProcess());
 
   if (network_type == "perfect") {
     // No action needed.
   } else if (network_type == "wifi") {
     in_pipe = media::cast::test::WifiNetwork().Pass();
     out_pipe = media::cast::test::WifiNetwork().Pass();
   } else if (network_type == "bad") {
@@ skipping 22 matching lines @@
                                           remote_endpoint,
                                           in_pipe.Pass(),
                                           out_pipe.Pass(),
                                           NULL));
   base::MessageLoop message_loop;
   g_counter.Get().last_printout = base::TimeTicks::Now();
   CheckByteCounters();
   message_loop.Run();
   return 1;
 }