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// Copyright (c) 2012 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.
// An implementation of WebSocketStreamHandle.
#include "webkit/glue/websocketstreamhandle_impl.h"
#include <vector>
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
#include "third_party/WebKit/public/platform/WebData.h"
#include "third_party/WebKit/public/platform/WebSocketStreamError.h"
#include "third_party/WebKit/public/platform/WebSocketStreamHandleClient.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "webkit/glue/webkitplatformsupport_impl.h"
#include "webkit/glue/websocketstreamhandle_bridge.h"
#include "webkit/glue/websocketstreamhandle_delegate.h"
using WebKit::WebData;
using WebKit::WebSocketStreamError;
using WebKit::WebSocketStreamHandle;
using WebKit::WebSocketStreamHandleClient;
using WebKit::WebURL;
namespace webkit_glue {
// WebSocketStreamHandleImpl::Context -----------------------------------------
class WebSocketStreamHandleImpl::Context
: public base::RefCounted<Context>,
public WebSocketStreamHandleDelegate {
public:
explicit Context(WebSocketStreamHandleImpl* handle);
WebSocketStreamHandleClient* client() const { return client_; }
void set_client(WebSocketStreamHandleClient* client) {
client_ = client;
}
void Connect(const WebURL& url, WebKitPlatformSupportImpl* platform);
bool Send(const WebData& data);
void Close();
// Must be called before |handle_| or |client_| is deleted.
// Once detached, it never calls |client_| back.
void Detach();
// WebSocketStreamHandleDelegate methods:
virtual void DidOpenStream(WebSocketStreamHandle*, int) OVERRIDE;
virtual void DidSendData(WebSocketStreamHandle*, int) OVERRIDE;
virtual void DidReceiveData(WebSocketStreamHandle*,
const char*,
int) OVERRIDE;
virtual void DidClose(WebSocketStreamHandle*) OVERRIDE;
virtual void DidFail(WebSocketStreamHandle*, int, const string16&) OVERRIDE;
private:
friend class base::RefCounted<Context>;
virtual ~Context() {
DCHECK(!handle_);
DCHECK(!client_);
DCHECK(!bridge_.get());
}
WebSocketStreamHandleImpl* handle_;
WebSocketStreamHandleClient* client_;
// |bridge_| is alive from Connect to DidClose, so Context must be alive
// in the time period.
scoped_refptr<WebSocketStreamHandleBridge> bridge_;
DISALLOW_COPY_AND_ASSIGN(Context);
};
WebSocketStreamHandleImpl::Context::Context(WebSocketStreamHandleImpl* handle)
: handle_(handle),
client_(NULL),
bridge_(NULL) {
}
void WebSocketStreamHandleImpl::Context::Connect(
const WebURL& url,
WebKitPlatformSupportImpl* platform) {
VLOG(1) << "Connect url=" << url;
DCHECK(!bridge_.get());
bridge_ = platform->CreateWebSocketBridge(handle_, this);
AddRef(); // Will be released by DidClose().
bridge_->Connect(url);
}
bool WebSocketStreamHandleImpl::Context::Send(const WebData& data) {
VLOG(1) << "Send data.size=" << data.size();
DCHECK(bridge_.get());
return bridge_->Send(
std::vector<char>(data.data(), data.data() + data.size()));
}
void WebSocketStreamHandleImpl::Context::Close() {
VLOG(1) << "Close";
if (bridge_.get())
bridge_->Close();
}
void WebSocketStreamHandleImpl::Context::Detach() {
handle_ = NULL;
client_ = NULL;
// If Connect was called, |bridge_| is not NULL, so that this Context closes
// the |bridge_| here. Then |bridge_| will call back DidClose, and will
// be released by itself.
// Otherwise, |bridge_| is NULL.
if (bridge_.get())
bridge_->Close();
}
void WebSocketStreamHandleImpl::Context::DidOpenStream(
WebSocketStreamHandle* web_handle, int max_amount_send_allowed) {
VLOG(1) << "DidOpen";
if (client_)
client_->didOpenStream(handle_, max_amount_send_allowed);
}
void WebSocketStreamHandleImpl::Context::DidSendData(
WebSocketStreamHandle* web_handle, int amount_sent) {
if (client_)
client_->didSendData(handle_, amount_sent);
}
void WebSocketStreamHandleImpl::Context::DidReceiveData(
WebSocketStreamHandle* web_handle, const char* data, int size) {
if (client_)
client_->didReceiveData(handle_, WebData(data, size));
}
void WebSocketStreamHandleImpl::Context::DidClose(
WebSocketStreamHandle* web_handle) {
VLOG(1) << "DidClose";
bridge_ = NULL;
WebSocketStreamHandleImpl* handle = handle_;
handle_ = NULL;
if (client_) {
WebSocketStreamHandleClient* client = client_;
client_ = NULL;
client->didClose(handle);
}
Release();
}
void WebSocketStreamHandleImpl::Context::DidFail(
WebSocketStreamHandle* web_handle,
int error_code,
const string16& error_msg) {
VLOG(1) << "DidFail";
if (client_) {
client_->didFail(
handle_,
WebSocketStreamError(error_code, error_msg));
}
}
// WebSocketStreamHandleImpl ------------------------------------------------
WebSocketStreamHandleImpl::WebSocketStreamHandleImpl(
WebKitPlatformSupportImpl* platform)
: context_(new Context(this)),
platform_(platform) {
}
WebSocketStreamHandleImpl::~WebSocketStreamHandleImpl() {
// We won't receive any events from |context_|.
// |context_| is ref counted, and will be released when it received
// DidClose.
context_->Detach();
}
void WebSocketStreamHandleImpl::connect(
const WebURL& url, WebSocketStreamHandleClient* client) {
VLOG(1) << "connect url=" << url;
DCHECK(!context_->client());
context_->set_client(client);
context_->Connect(url, platform_);
}
bool WebSocketStreamHandleImpl::send(const WebData& data) {
return context_->Send(data);
}
void WebSocketStreamHandleImpl::close() {
context_->Close();
}
} // namespace webkit_glue
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