[WebSocket] Send a close frame when the renderer process is gone.

content/browser/renderer_host/websocket_host.cc

 // Copyright 2013 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 "content/browser/renderer_host/websocket_host.h"
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string_util.h"
 #include "content/browser/renderer_host/websocket_dispatcher_host.h"
 #include "content/browser/ssl/ssl_error_handler.h"
 #include "content/browser/ssl/ssl_manager.h"
 #include "content/common/websocket_messages.h"
 #include "ipc/ipc_message_macros.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_util.h"
 #include "net/ssl/ssl_info.h"
 #include "net/websockets/websocket_channel.h"
+#include "net/websockets/websocket_errors.h"
 #include "net/websockets/websocket_event_interface.h"
 #include "net/websockets/websocket_frame.h"  // for WebSocketFrameHeader::OpCode
 #include "net/websockets/websocket_handshake_request_info.h"
 #include "net/websockets/websocket_handshake_response_info.h"
 #include "url/origin.h"
 
 namespace content {
 
 namespace {
 
@@ skipping 293 matching lines @@
                              WebSocketDispatcherHost* dispatcher,
                              net::URLRequestContext* url_request_context)
     : dispatcher_(dispatcher),
       url_request_context_(url_request_context),
       routing_id_(routing_id) {
   DVLOG(1) << "WebSocketHost: created routing_id=" << routing_id;
 }
 
 WebSocketHost::~WebSocketHost() {}
 
+void WebSocketHost::GoAway() {
+  OnDropChannel(false, static_cast<uint16>(net::kWebSocketErrorGoingAway), "");
+}
+
 bool WebSocketHost::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebSocketHost, message)
     IPC_MESSAGE_HANDLER(WebSocketHostMsg_AddChannelRequest, OnAddChannelRequest)
     IPC_MESSAGE_HANDLER(WebSocketMsg_SendFrame, OnSendFrame)
     IPC_MESSAGE_HANDLER(WebSocketMsg_FlowControl, OnFlowControl)
     IPC_MESSAGE_HANDLER(WebSocketMsg_DropChannel, OnDropChannel)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ skipping 43 matching lines @@
   DVLOG(3) << "WebSocketHost::OnDropChannel"
            << " routing_id=" << routing_id_ << " was_clean=" << was_clean
            << " code=" << code << " reason=\"" << reason << "\"";
 
   DCHECK(channel_);
   // TODO(yhirano): Handle |was_clean| appropriately.
   channel_->StartClosingHandshake(code, reason);
 }
 
 }  // namespace content