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// Copyright (c) 2011 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 <vector>
#include "browser_socket_stream_bridge.h"
#include "base/atomicops.h"
#include "base/bind.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop.h"
#include "googleurl/src/gurl.h"
#include "net/socket_stream/socket_stream_job.h"
#include "net/websockets/websocket_job.h"
#include "net/url_request/url_request_context.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSocketStreamHandle.h"
#include "webkit/glue/websocketstreamhandle_bridge.h"
#include "webkit/glue/websocketstreamhandle_delegate.h"
using webkit_glue::WebSocketStreamHandleBridge;
const int kNoSocketId = 0;
namespace {
MessageLoop* g_io_thread;
net::URLRequestContext* g_request_context;
class WebSocketStreamHandleBridgeImpl
: public WebSocketStreamHandleBridge,
public net::SocketStream::Delegate {
public:
WebSocketStreamHandleBridgeImpl(
WebKit::WebSocketStreamHandle* handle,
webkit_glue::WebSocketStreamHandleDelegate* delegate);
// WebSocketStreamHandleBridge methods.
virtual void Connect(const GURL& url);
virtual bool Send(const std::vector<char>& data);
virtual void Close();
// net::SocketStream::Delegate methods.
virtual void OnConnected(net::SocketStream* req,
int max_pending_send_allowed);
virtual void OnSentData(net::SocketStream* req,
int amount_sent);
virtual void OnReceivedData(net::SocketStream* req,
const char* data, int len);
virtual void OnClose(net::SocketStream* req);
private:
virtual ~WebSocketStreamHandleBridgeImpl();
// Runs on |g_io_thread|;
void DoConnect(const GURL& url);
void DoSend(std::vector<char>* data);
void DoClose();
// Runs on |message_loop_|;
void DoOnConnected(int max_amount_send_allowed);
void DoOnSentData(int amount_sent);
void DoOnReceivedData(std::vector<char>* data);
void DoOnClose();
int socket_id_;
MessageLoop* message_loop_;
WebKit::WebSocketStreamHandle* handle_;
webkit_glue::WebSocketStreamHandleDelegate* delegate_;
scoped_refptr<net::SocketStreamJob> socket_;
// Number of pending tasks to handle net::SocketStream::Delegate methods.
base::subtle::Atomic32 num_pending_tasks_;
DISALLOW_COPY_AND_ASSIGN(WebSocketStreamHandleBridgeImpl);
};
WebSocketStreamHandleBridgeImpl::WebSocketStreamHandleBridgeImpl(
WebKit::WebSocketStreamHandle* handle,
webkit_glue::WebSocketStreamHandleDelegate* delegate)
: socket_id_(kNoSocketId),
message_loop_(MessageLoop::current()),
handle_(handle),
delegate_(delegate),
num_pending_tasks_(0) {
net::WebSocketJob::EnsureInit();
}
WebSocketStreamHandleBridgeImpl::~WebSocketStreamHandleBridgeImpl() {
DCHECK_EQ(socket_id_, kNoSocketId);
}
void WebSocketStreamHandleBridgeImpl::Connect(const GURL& url) {
DCHECK(g_io_thread);
AddRef(); // Released in DoOnClose().
g_io_thread->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoConnect, this, url));
if (delegate_)
delegate_->WillOpenStream(handle_, url);
}
bool WebSocketStreamHandleBridgeImpl::Send(
const std::vector<char>& data) {
DCHECK(g_io_thread);
g_io_thread->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoSend, this,
new std::vector<char>(data)));
return true;
}
void WebSocketStreamHandleBridgeImpl::Close() {
DCHECK(g_io_thread);
g_io_thread->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoClose, this));
}
void WebSocketStreamHandleBridgeImpl::OnConnected(
net::SocketStream* socket, int max_pending_send_allowed) {
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, 1);
message_loop_->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoOnConnected, this,
max_pending_send_allowed));
}
void WebSocketStreamHandleBridgeImpl::OnSentData(
net::SocketStream* socket, int amount_sent) {
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, 1);
message_loop_->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoOnSentData, this,
amount_sent));
}
void WebSocketStreamHandleBridgeImpl::OnReceivedData(
net::SocketStream* socket, const char* data, int len) {
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, 1);
message_loop_->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoOnReceivedData, this,
new std::vector<char>(data, data + len)));
}
void WebSocketStreamHandleBridgeImpl::OnClose(net::SocketStream* socket) {
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, 1);
// Release socket_ on IO thread.
socket_ = NULL;
socket_id_ = kNoSocketId;
message_loop_->PostTask(
FROM_HERE,
base::Bind(&WebSocketStreamHandleBridgeImpl::DoOnClose, this));
}
void WebSocketStreamHandleBridgeImpl::DoConnect(const GURL& url) {
DCHECK(MessageLoop::current() == g_io_thread);
socket_ = net::SocketStreamJob::CreateSocketStreamJob(
url, this, g_request_context->transport_security_state(),
g_request_context->ssl_config_service());
socket_->set_context(g_request_context);
socket_->Connect();
}
void WebSocketStreamHandleBridgeImpl::DoSend(std::vector<char>* data) {
DCHECK(MessageLoop::current() == g_io_thread);
scoped_ptr<std::vector<char> > scoped_data(data);
if (!socket_)
return;
if (!socket_->SendData(&(data->at(0)), data->size()))
socket_->Close();
}
void WebSocketStreamHandleBridgeImpl::DoClose() {
DCHECK(MessageLoop::current() == g_io_thread);
if (!socket_)
return;
socket_->Close();
}
void WebSocketStreamHandleBridgeImpl::DoOnConnected(
int max_pending_send_allowed) {
DCHECK(MessageLoop::current() == message_loop_);
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, -1);
if (delegate_)
delegate_->DidOpenStream(handle_, max_pending_send_allowed);
}
void WebSocketStreamHandleBridgeImpl::DoOnSentData(int amount_sent) {
DCHECK(MessageLoop::current() == message_loop_);
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, -1);
if (delegate_)
delegate_->DidSendData(handle_, amount_sent);
}
void WebSocketStreamHandleBridgeImpl::DoOnReceivedData(
std::vector<char>* data) {
DCHECK(MessageLoop::current() == message_loop_);
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, -1);
scoped_ptr<std::vector<char> > scoped_data(data);
if (delegate_)
delegate_->DidReceiveData(handle_, &(data->at(0)), data->size());
}
void WebSocketStreamHandleBridgeImpl::DoOnClose() {
DCHECK(MessageLoop::current() == message_loop_);
base::subtle::NoBarrier_AtomicIncrement(&num_pending_tasks_, -1);
// Don't handle OnClose if there are pending tasks.
DCHECK_EQ(num_pending_tasks_, 0);
DCHECK(!socket_);
DCHECK_EQ(socket_id_, kNoSocketId);
webkit_glue::WebSocketStreamHandleDelegate* delegate = delegate_;
delegate_ = NULL;
if (delegate)
delegate->DidClose(handle_);
Release();
}
} // namespace
/* static */
void BrowserSocketStreamBridge::InitializeOnIOThread(
net::URLRequestContext* request_context) {
g_io_thread = MessageLoop::current();
if ((g_request_context = request_context))
g_request_context->AddRef();
}
void BrowserSocketStreamBridge::Cleanup() {
g_io_thread = NULL;
if (g_request_context)
g_request_context->Release();
g_request_context = NULL;
}
/* static */
webkit_glue::WebSocketStreamHandleBridge* BrowserSocketStreamBridge::Create(
WebKit::WebSocketStreamHandle* handle,
webkit_glue::WebSocketStreamHandleDelegate* delegate) {
return new WebSocketStreamHandleBridgeImpl(handle, delegate);
}