Deleted unused method EstimateMTU, and the WinPing class.

webrtc/base/win32socketserver.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/base/win32socketserver.h"
 
 #include <algorithm>
 #include <ws2tcpip.h>  // NOLINT
 
 #include "webrtc/base/byteorder.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/win32window.h"
-#include "webrtc/base/winping.h"
 
 namespace rtc {
 
 ///////////////////////////////////////////////////////////////////////////////
 // Win32Socket
 ///////////////////////////////////////////////////////////////////////////////
 
 // TODO: Move this to a common place where PhysicalSocketServer can
 // share it.
 // Standard MTUs
@@ skipping 487 matching lines @@
   }
   if (sink_) {
     sink_->Dispose();
     sink_ = nullptr;
   }
   addr_.Clear();
   state_ = CS_CLOSED;
   return err;
 }
 
-int Win32Socket::EstimateMTU(uint16_t* mtu) {
-  SocketAddress addr = GetRemoteAddress();
-  if (addr.IsAnyIP()) {
-    error_ = ENOTCONN;
-    return -1;
-  }
-
-  WinPing ping;
-  if (!ping.IsValid()) {
-    error_ = EINVAL;  // can't think of a better error ID
-    return -1;
-  }
-
-  for (int level = 0; PACKET_MAXIMUMS[level + 1] > 0; ++level) {
-    int32_t size = PACKET_MAXIMUMS[level] - IP_HEADER_SIZE - ICMP_HEADER_SIZE;
-    WinPing::PingResult result = ping.Ping(addr.ipaddr(), size,
-                                           ICMP_PING_TIMEOUT_MILLIS, 1, false);
-    if (result == WinPing::PING_FAIL) {
-      error_ = EINVAL;  // can't think of a better error ID
-      return -1;
-    }
-    if (result != WinPing::PING_TOO_LARGE) {
-      *mtu = PACKET_MAXIMUMS[level];
-      return 0;
-    }
-  }
-
-  RTC_NOTREACHED();
-  return 0;
-}
-
 void Win32Socket::CreateSink() {
   RTC_DCHECK(nullptr == sink_);
 
   // Create window
   sink_ = new EventSink(this);
   sink_->Create(nullptr, L"EventSink", 0, 0, 0, 0, 10, 10);
 }
 
 bool Win32Socket::SetAsync(int events) {
   if (nullptr == sink_) {
@@ skipping 288 matching lines @@
   bool handled = false;
   if (wm == s_wm_wakeup_id || (wm == WM_TIMER && wp == 1)) {
     ss_->Pump();
     lr = 0;
     handled = true;
   }
   return handled;
 }
 
 }  // namespace rtc