Introduce webkit_glue bridges for the new WebSocket Implementation.

content/child/websocket_dispatcher.cc

+// Copyright (c) 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/child/websocket_dispatcher.h"
+
+#include <string>
+#include <vector>
+
+#include "base/id_map.h"
+#include "base/lazy_instance.h"
+#include "base/memory/ref_counted.h"
+#include "content/child/child_thread.h"
+#include "content/common/websocket_messages.h"
+#include "ipc/ipc_message.h"
+#include "ipc/ipc_message_macros.h"
+#include "url/gurl.h"
+#include "webkit/child/websocket_handle_bridge.h"
+#include "webkit/child/websocket_handle_delegate.h"
+
+using webkit_glue::WebSocketHandleBridge;
+using webkit_glue::WebSocketHandleDelegate;
+
+namespace content {
+
+class IPCWebSocketHandleBridge : public WebSocketHandleBridge {
+ public:
+  explicit IPCWebSocketHandleBridge(WebSocketHandleDelegate* delegate);
+
+  void DidConnect(bool fail,
+                  const std::string& selected_protocol,
+                  const std::string& extensions);
+  void DidReceiveData(bool fin,
+                      WebSocketHandleBridge::MessageType type,
+                      const char* data,
+                      size_t size);
+  void DidReceiveFlowControl(int64_t quota);
+  void DidClose(unsigned short code, const std::string& reason);
+
+  // WebSocketHandleBridge functions.
+  virtual void Connect(const GURL& url,
+                       const std::vector<std::string>& protocols,
+                       const GURL& origin,
+                       WebSocketHandleDelegate* delegate) OVERRIDE;
+  virtual void Send(bool fin,
+                    WebSocketHandleBridge::MessageType type,
+                    const char* data,
+                    size_t size) OVERRIDE;
+  virtual void FlowControl(int64_t quota) OVERRIDE;
+  virtual void Close(unsigned short code, const std::string& reason) OVERRIDE;
+  virtual void Disconnect() OVERRIDE;
+
+  static IPCWebSocketHandleBridge* Get(int channel_id);
+
+ private:
+  virtual ~IPCWebSocketHandleBridge();
+  int channel_id_;
+  WebSocketHandleDelegate* delegate_;
+
+  // Map from ID to bridge instance.
+  static base::LazyInstance<IDMap<IPCWebSocketHandleBridge> >::Leaky bridges;

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

We used a variable without _ at the end for socket_stream_dispatcher.cc, but
don't mind it. IIUC, there's no special naming rule defined for static members.
Use "bridges_".

[yhirano, 2013/09/03 09:12:08]

Done.

+  const int INVALID_CHANNEL_ID = -1;

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

kInvalidChannelId

[yhirano, 2013/09/03 09:12:08]

Done.

+};
+
+base::LazyInstance<IDMap<IPCWebSocketHandleBridge> >::Leaky
+    IPCWebSocketHandleBridge::bridges = LAZY_INSTANCE_INITIALIZER;;
+
+IPCWebSocketHandleBridge::IPCWebSocketHandleBridge(
+    WebSocketHandleDelegate* delegate)
+    : channel_id_(INVALID_CHANNEL_ID),
+      delegate_(delegate) {
+  channel_id_ = bridges.Get().Add(this);
+  DCHECK(delegate_);
+
+  // To be released in Disconnect.
+  AddRef();
+}
+
+IPCWebSocketHandleBridge::~IPCWebSocketHandleBridge() {
+  DCHECK_EQ(INVALID_CHANNEL_ID, channel_id_);
+  DCHECK(!delegate_);
+}
+
+void IPCWebSocketHandleBridge::DidConnect(bool fail,
+                                          const std::string& selected_protocol,
+                                          const std::string& extensions) {
+  if (delegate_) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

Remove {}?

[yhirano, 2013/09/03 09:12:08]

Done.

+    delegate_->DidConnect(fail, selected_protocol, extensions);
+  }
+}
+
+void IPCWebSocketHandleBridge::DidReceiveData(
+    bool fin,
+    WebSocketHandleBridge::MessageType type,
+    const char* data,
+    size_t size) {
+  if (delegate_) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

ditto

[yhirano, 2013/09/03 09:12:08]

Done.

+    delegate_->DidReceiveData(fin, type, data, size);
+  }
+}
+
+void IPCWebSocketHandleBridge::DidReceiveFlowControl(int64_t quota) {
+  if (delegate_) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

ditto

[yhirano, 2013/09/03 09:12:08]

Done.

+    delegate_->DidReceiveFlowControl(quota);
+  }
+}
+
+void IPCWebSocketHandleBridge::DidClose(unsigned short code,
+                                        const std::string& reason) {
+  if (delegate_) {
+    delegate_->DidClose(code, reason);
+  }
+  Disconnect();
+  // Disconnect() may delete this object.
+}
+
+void IPCWebSocketHandleBridge::Connect(
+    const GURL& url,
+    const std::vector<std::string>& protocols,
+    const GURL& origin,
+    WebSocketHandleDelegate* delegate) {
+  if (channel_id_ == INVALID_CHANNEL_ID) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

Remove {}?

[yhirano, 2013/09/03 09:12:08]

Done.

+    return;
+  }
+  DVLOG(1) << "Bridge#" << channel_id_ << " Connect("
+           << url << ", " << "(protocols)" << ", " << origin << ")";

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

"(protocols)"
intentional or TODO?

You can use VLOG_IS_ON to run code to print protocols only when --v=1 is
specified

[yhirano, 2013/09/03 09:12:08]

Done.

+
+  ChildThread::current()->Send(
+      new WebSocketHostMsg_AddChannelRequest(channel_id_,
+                                             url,
+                                             protocols,
+                                             origin));
+}
+
+void IPCWebSocketHandleBridge::Send(bool fin,
+                                    WebSocketHandleBridge::MessageType type,
+                                    const char* data,
+                                    size_t size) {
+  if (channel_id_ == INVALID_CHANNEL_ID) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

Remove {}?

[yhirano, 2013/09/03 09:12:08]

Done.

+    return;
+  }
+
+  WebSocketMessageType type_to_pass;
+  switch (type) {
+    case WebSocketHandleBridge::MESSAGE_TYPE_CONTINUATION:
+      type_to_pass = WEB_SOCKET_MESSAGE_TYPE_CONTINUATION;
+      break;
+    case WebSocketHandleBridge::MESSAGE_TYPE_TEXT:
+      type_to_pass = WEB_SOCKET_MESSAGE_TYPE_TEXT;
+      break;
+    case WebSocketHandleBridge::MESSAGE_TYPE_BINARY:
+      type_to_pass = WEB_SOCKET_MESSAGE_TYPE_BINARY;
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
+
+  DVLOG(1) << "Bridge #" << channel_id_ << " Send("
+           << fin << ", " << type_to_pass << ", "
+           << "(data size = "  << size << "))";
+
+  ChildThread::current()->Send(
+      new WebSocketMsg_SendFrame(channel_id_,
+                                 fin,
+                                 type_to_pass,
+                                 std::vector<char>(&data[0], &data[size])));
+}
+
+void IPCWebSocketHandleBridge::FlowControl(int64_t quota) {
+  if (channel_id_ == INVALID_CHANNEL_ID) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

ditto

[yhirano, 2013/09/03 09:12:08]

Done.

+    return;
+  }
+  DVLOG(1) << "Bridge #" << channel_id_ << " FlowControl(" << quota << ")";
+
+  ChildThread::current()->Send(
+      new WebSocketMsg_FlowControl(channel_id_, quota));
+}
+
+void IPCWebSocketHandleBridge::Close(unsigned short code,
+                                     const std::string& reason) {
+  if (channel_id_ == INVALID_CHANNEL_ID) {

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

ditto

[yhirano, 2013/09/03 09:12:08]

Done.

+    return;
+  }
+  DVLOG(1) << "Bridge #" << channel_id_ << " Close("
+           << code << ", " << reason << ")";
+  ChildThread::current()->Send(
+      new WebSocketMsg_DropChannel(channel_id_, code, reason));
+}
+
+void IPCWebSocketHandleBridge::Disconnect() {
+  if (channel_id_ != INVALID_CHANNEL_ID) {
+    DCHECK(Get(channel_id_));
+    bridges.Get().Remove(channel_id_);
+  }
+
+  channel_id_ = INVALID_CHANNEL_ID;
+  delegate_ = NULL;
+  Release();
+  // Release() may delete this object.
+}
+

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

// static
or
/* static */
looks like the former is more popular in Chromium

[yhirano, 2013/09/03 09:12:08]

Done.

+IPCWebSocketHandleBridge* IPCWebSocketHandleBridge::Get(int channel_id) {
+  return bridges.Get().Lookup(channel_id);
+}
+
+WebSocketDispatcher::WebSocketDispatcher() {}
+
+WebSocketHandleBridge* WebSocketDispatcher::CreateBridge(
+    WebSocketHandleDelegate* delegate) {
+  return new IPCWebSocketHandleBridge(delegate);
+}
+
+bool WebSocketDispatcher::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(WebSocketDispatcher, msg)
+    IPC_MESSAGE_HANDLER(WebSocketMsg_AddChannelResponse, OnConnected)
+    IPC_MESSAGE_HANDLER(WebSocketMsg_SendFrame, OnReceivedData)
+    IPC_MESSAGE_HANDLER(WebSocketMsg_FlowControl, OnReceivedFlowControl)
+    IPC_MESSAGE_HANDLER(WebSocketMsg_DropChannel, OnClosed)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void WebSocketDispatcher::OnConnected(int channel_id,
+                                      bool fail,
+                                      std::string selected_protocol,
+                                      std::string extensions) {
+  DVLOG(1) << "WebSocketDispathcer::OnConnected("
+           << channel_id << ", "
+           << fail << ", "
+           << selected_protocol << ", "
+           << extensions << ")";
+  IPCWebSocketHandleBridge* bridge = IPCWebSocketHandleBridge::Get(channel_id);
+  if (!bridge) {
+    DVLOG(1) << "No bridge for channel_id=" << channel_id;
+    return;
+  }
+  bridge->DidConnect(fail, selected_protocol, extensions);
+}
+
+void WebSocketDispatcher::OnReceivedData(int channel_id,
+                                         bool fin,
+                                         WebSocketMessageType type,
+                                         std::vector<char> data) {
+  DVLOG(1) << "WebSocketDispathcer::OnReceivedData("
+           << channel_id << ", "
+           << fin << ", "
+           << type << ", "
+           << "(data size = " << data.size() << "))";
+  IPCWebSocketHandleBridge* bridge = IPCWebSocketHandleBridge::Get(channel_id);
+  if (!bridge) {
+    DVLOG(1) << "No bridge for channel_id=" << channel_id;
+    return;
+  }
+  WebSocketHandleBridge::MessageType type_to_pass;

[tyoshino (SeeGerritForStatus), 2013/09/03 07:18:30]

a

+  switch (type) {
+    case WEB_SOCKET_MESSAGE_TYPE_CONTINUATION:
+      type_to_pass = WebSocketHandleBridge::MESSAGE_TYPE_CONTINUATION;
+      break;
+    case WEB_SOCKET_MESSAGE_TYPE_TEXT:
+      type_to_pass = WebSocketHandleBridge::MESSAGE_TYPE_TEXT;
+      break;
+    case WEB_SOCKET_MESSAGE_TYPE_BINARY:
+      type_to_pass = WebSocketHandleBridge::MESSAGE_TYPE_BINARY;
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
+  bridge->DidReceiveData(fin, type_to_pass, data.data(), data.size());
+}
+
+void WebSocketDispatcher::OnReceivedFlowControl(int channel_id, int64 quota) {
+  DVLOG(1) << "WebSocketDispathcer::OnReceivedFlowControl("
+           << channel_id << ", "
+           << quota << ")";
+  IPCWebSocketHandleBridge* bridge = IPCWebSocketHandleBridge::Get(channel_id);
+  if (!bridge) {
+    DVLOG(1) << "No bridge for channel_id=" << channel_id;
+    return;
+  }
+  bridge->DidReceiveFlowControl(quota);
+}
+
+void WebSocketDispatcher::OnClosed(int channel_id,
+                                   unsigned short code,
+                                   std::string reason) {
+  DVLOG(1) << "WebSocketDispathcer::OnClosed("
+           << channel_id << ", "
+           << code << ", "
+           << reason << ")";
+  IPCWebSocketHandleBridge* bridge = IPCWebSocketHandleBridge::Get(channel_id);
+  if (!bridge) {
+    DVLOG(1) << "No bridge for channel_id=" << channel_id;
+    return;
+  }
+  bridge->DidClose(code, reason);
+}
+
+}  // namespace content