WebSocket over SPDY.

net/websockets/websocket_job.cc

 // Copyright (c) 2010 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 "net/websockets/websocket_job.h"
 
 #include <algorithm>
 
 #include "base/string_tokenizer.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/cookie_policy.h"
 #include "net/base/cookie_store.h"
 #include "net/base/io_buffer.h"
+#include "net/http/http_network_session.h"
+#include "net/http/http_transaction_factory.h"
 #include "net/http/http_util.h"
+#include "net/spdy/spdy_session.h"
+#include "net/spdy/spdy_session_pool.h"
 #include "net/url_request/url_request_context.h"
 #include "net/websockets/websocket_frame_handler.h"
 #include "net/websockets/websocket_handshake_handler.h"
 #include "net/websockets/websocket_net_log_params.h"
 #include "net/websockets/websocket_throttle.h"
 
 namespace {
 
 // lower-case header names.
 const char* const kCookieHeaders[] = {
@@ skipping 78 matching lines @@
         // If we don't call OnSentData, WebCore::SocketStreamHandle would stop
         // sending more data when pending data reaches max_pending_send_allowed.
         // TODO(ukai): Fix this to support compression for larger message.
         int err = 0;
         if (!send_frame_handler_->GetCurrentBuffer() &&
             (err = send_frame_handler_->UpdateCurrentBuffer(false)) > 0) {
           DCHECK(!current_buffer_);
           current_buffer_ = new DrainableIOBuffer(
               send_frame_handler_->GetCurrentBuffer(),
               send_frame_handler_->GetCurrentBufferSize());
-          return socket_->SendData(
+          SendDataInternal(
               current_buffer_->data(), current_buffer_->BytesRemaining());
+          return true;
         }
         return err >= 0;
       }
 
     case CLOSING:
     case CLOSED:
       return false;
   }
   return false;
 }
 
 void WebSocketJob::Close() {
   state_ = CLOSING;
   if (current_buffer_) {
     // Will close in SendPending.
     return;
   }
   state_ = CLOSED;
-  socket_->Close();
+  CloseInternal();
 }
 
 void WebSocketJob::RestartWithAuth(
     const string16& username,
     const string16& password) {
   state_ = CONNECTING;
   socket_->RestartWithAuth(username, password);
 }
 
 void WebSocketJob::DetachDelegate() {
@@ skipping 13 matching lines @@
     Release();  // Balanced with OnStartOpenConnection().
   }
 }
 
 int WebSocketJob::OnStartOpenConnection(
     SocketStream* socket, CompletionCallback* callback) {
   DCHECK(!callback_);
   state_ = CONNECTING;
   addresses_.Copy(socket->address_list().head(), true);
   Singleton<WebSocketThrottle>::get()->PutInQueue(this);
-  if (!waiting_)
-    return OK;
+  if (!waiting_) {
+    int result = TrySpdyStream();
+    if (result != ERR_IO_PENDING)
+      return result;
+  }
   callback_ = callback;
   AddRef();  // Balanced when callback_ becomes NULL.
-  return ERR_IO_PENDING;
+  return ERR_IO_PENDING;  // Wakeup will be called later.
 }
 
 void WebSocketJob::OnConnected(
     SocketStream* socket, int max_pending_send_allowed) {
   if (state_ == CLOSED)
     return;
   DCHECK_EQ(CONNECTING, state_);
   if (delegate_)
     delegate_->OnConnected(socket, max_pending_send_allowed);
 }
@@ skipping 74 matching lines @@
     SocketStream* socket, AuthChallengeInfo* auth_info) {
   if (delegate_)
     delegate_->OnAuthRequired(socket, auth_info);
 }
 
 void WebSocketJob::OnError(const SocketStream* socket, int error) {
   if (delegate_)
     delegate_->OnError(socket, error);
 }
 
+void WebSocketJob::OnCreatedSpdyStream(
+    SpdyWebSocketStream* spdy_websocket_stream, int result) {
+  if (state_ == CLOSED) {
+    spdy_websocket_stream_.reset();
+    DoCallback(ERR_ABORTED);
+    return;
+  }
+  DCHECK(spdy_websocket_stream_.get());
+  DCHECK(socket_.get());
+  if (result == OK) {
+    socket_->SwitchToSpdy();
+    if (callback_)
+      DoCallback(OK);
+    return;
+  }
+  DCHECK_NE(ERR_IO_PENDING, result);
+  spdy_websocket_stream_.reset();
+  if (callback_)
+    DoCallback(result);
+}
+
+void WebSocketJob::OnSentSpdyHeaders(
+    SpdyWebSocketStream* spdy_websocket_stream) {
+  if (state_ != CONNECTING)
+    return;
+  if (delegate_)
+    delegate_->OnSentData(
+        socket_,
+        handshake_request_->original_length());
+  handshake_request_.reset();
+}
+
+int WebSocketJob::OnReceivedSpdyResponseHeader(
+    SpdyWebSocketStream* spdy_websocket_stream,
+    const spdy::SpdyHeaderBlock& headers,
+    int status) {
+  DCHECK_NE(INITIALIZED, state_);
+  if (state_ != CONNECTING)
+    return status;
+  if (status != OK)
+    return status;
+  // TODO(ukai): fallback to non-spdy connection?
+  handshake_response_->ParseResponseHeaderBlock(headers, challenge_);
+
+  SaveCookiesAndNotifyHeaderComplete();
+  return OK;
+}
+
+void WebSocketJob::OnSentSpdyData(
+    SpdyWebSocketStream* spdy_websocket_stream, int amount_sent) {
+  DCHECK_NE(INITIALIZED, state_);
+  DCHECK_NE(CONNECTING, state_);
+  if (state_ == CLOSED)
+    return;
+  if (!spdy_websocket_stream_.get())
+    return;
+  OnSentData(socket_, amount_sent);
+}
+
+void WebSocketJob::OnReceivedSpdyData(
+    SpdyWebSocketStream* spdy_websocket_stream,
+    const char* data, int length) {
+  DCHECK_NE(INITIALIZED, state_);
+  DCHECK_NE(CONNECTING, state_);
+  if (state_ == CLOSED)
+    return;
+  if (!spdy_websocket_stream_.get())
+    return;
+  OnReceivedData(socket_, data, length);
+}
+
+void WebSocketJob::OnCloseSpdyStream(
+    SpdyWebSocketStream* spdy_websocket_stream) {
+  spdy_websocket_stream_.reset();
+  OnClose(socket_);
+}
+
 bool WebSocketJob::SendHandshakeRequest(const char* data, int len) {
   DCHECK_EQ(state_, CONNECTING);
   if (!handshake_request_->ParseRequest(data, len))
     return false;
 
   // handshake message is completed.
   AddCookieHeaderAndSend();
   // Just buffered in |handshake_request_|.
   return true;
 }
@@ skipping 24 matching lines @@
         CookieOptions cookie_options;
         cookie_options.set_include_httponly();
         std::string cookie =
             socket_->context()->cookie_store()->GetCookiesWithOptions(
                 GetURLForCookies(), cookie_options);
         if (!cookie.empty())
           handshake_request_->AppendHeaderIfMissing("Cookie", cookie);
       }
     }
 
-    const std::string& handshake_request = handshake_request_->GetRawRequest();
-    handshake_request_sent_ = 0;
-    socket_->net_log()->AddEvent(
-        NetLog::TYPE_WEB_SOCKET_SEND_REQUEST_HEADERS,
-        make_scoped_refptr(
-            new NetLogWebSocketHandshakeParameter(handshake_request)));
-    socket_->SendData(handshake_request.data(),
-                      handshake_request.size());
+    if (spdy_websocket_stream_.get()) {
+      linked_ptr<spdy::SpdyHeaderBlock> headers(new spdy::SpdyHeaderBlock);
+      handshake_request_->GetRequestHeaderBlock(
+          socket_->url(), headers.get(), &challenge_);
+      spdy_websocket_stream_->SendRequest(headers);
+    } else {
+      const std::string& handshake_request =
+          handshake_request_->GetRawRequest();
+      handshake_request_sent_ = 0;
+      socket_->net_log()->AddEvent(
+          NetLog::TYPE_WEB_SOCKET_SEND_REQUEST_HEADERS,
+          make_scoped_refptr(
+              new NetLogWebSocketHandshakeParameter(handshake_request)));
+      socket_->SendData(handshake_request.data(),
+                        handshake_request.size());
+    }
   }
   Release();  // Balance AddRef taken in AddCookieHeaderAndSend
 }
 
 void WebSocketJob::OnSentHandshakeRequest(
     SocketStream* socket, int amount_sent) {
   DCHECK_EQ(state_, CONNECTING);
   handshake_request_sent_ += amount_sent;
   DCHECK_LE(handshake_request_sent_, handshake_request_->raw_length());
   if (handshake_request_sent_ >= handshake_request_->raw_length()) {
@@ skipping 122 matching lines @@
   url_canon::Replacements<char> replacements;
   replacements.SetScheme(scheme.c_str(),
                          url_parse::Component(0, scheme.length()));
   return url.ReplaceComponents(replacements);
 }
 
 const AddressList& WebSocketJob::address_list() const {
   return addresses_;
 }
 
+int WebSocketJob::TrySpdyStream() {
+  if (!socket_.get())
+    return ERR_FAILED;
+
+  // Check if we have a SPDY session available.
+  // If so, use it to create the websocket stream.
+  HttpTransactionFactory* factory =
+      socket_->context()->http_transaction_factory();
+  if (factory) {
+    scoped_refptr<HttpNetworkSession> session =
+        factory->GetSession();
+    if (session.get()) {
+      SpdySessionPool* spdy_pool = session->spdy_session_pool();
+      const HostPortProxyPair pair(socket_->GetHostPortPair(),
+                                   socket_->proxy_server());
+      if (spdy_pool->HasSession(pair)) {
+        scoped_refptr<SpdySession> spdy_session =
+            spdy_pool->Get(pair,
+                           session->mutable_spdy_settings(),
+                           *socket_->net_log());
+
+        spdy_websocket_stream_.reset(
+            new SpdyWebSocketStream(spdy_session, this));
+
+        int result = spdy_websocket_stream_->InitializeStream(
+            socket_->url(), MEDIUM, *socket_->net_log());
+        if (result != ERR_IO_PENDING && callback_)
+          DoCallback(result);
+        return result;
+      }
+    }
+  }
+  // No SPDY session was available.
+  // Fallback to connecting a new socket.
+  DCHECK(!spdy_websocket_stream_.get());
+  if (callback_)
+    DoCallback(OK);
+  return OK;
+}
+
 void WebSocketJob::SetWaiting() {
   waiting_ = true;
 }
 
 bool WebSocketJob::IsWaiting() const {
   return waiting_;
 }
 
 void WebSocketJob::Wakeup() {
   if (!waiting_)
     return;
   waiting_ = false;
   DCHECK(callback_);
   MessageLoopForIO::current()->PostTask(
       FROM_HERE,
       NewRunnableMethod(this,
-                        &WebSocketJob::DoCallback));
+                        &WebSocketJob::TrySpdyStream));
 }
 
-void WebSocketJob::DoCallback() {
+void WebSocketJob::DoCallback(int result) {
   // |callback_| may be NULL if OnClose() or DetachDelegate() was called.
   if (callback_) {
     net::CompletionCallback* callback = callback_;
     callback_ = NULL;
-    callback->Run(net::OK);
+    callback->Run(result);
     Release();  // Balanced with OnStartOpenConnection().
   }
 }
 
+void WebSocketJob::SendDataInternal(const char* data, int length) {
+  if (spdy_websocket_stream_.get())
+    spdy_websocket_stream_->SendData(data, length);
+  else
+    socket_->SendData(data, length);
+}
+
+void WebSocketJob::CloseInternal() {
+  if (spdy_websocket_stream_.get())
+    spdy_websocket_stream_->Close();
+  else
+    socket_->Close();
+}
+
 void WebSocketJob::SendPending() {
   if (current_buffer_)
     return;
   // Current buffer is done.  Try next buffer if any.
   // Don't buffer sending data. See comment on case OPEN in SendData().
   if (send_frame_handler_->UpdateCurrentBuffer(false) <= 0) {
     // No more data to send.
     if (state_ == CLOSING)
-      socket_->Close();
+      CloseInternal();
     return;
   }
   current_buffer_ = new DrainableIOBuffer(
       send_frame_handler_->GetCurrentBuffer(),
       send_frame_handler_->GetCurrentBufferSize());
-  socket_->SendData(current_buffer_->data(), current_buffer_->BytesRemaining());
+  SendDataInternal(current_buffer_->data(), current_buffer_->BytesRemaining());
 }
 
 }  // namespace net