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// 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 "net/websockets/websocket_stream.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_status_code.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/websockets/websocket_errors.h"
#include "net/websockets/websocket_handshake_constants.h"
#include "net/websockets/websocket_handshake_stream_base.h"
#include "net/websockets/websocket_handshake_stream_create_helper.h"
#include "net/websockets/websocket_test_util.h"
#include "url/gurl.h"
namespace net {
namespace {
class StreamRequestImpl;
class Delegate : public URLRequest::Delegate {
public:
explicit Delegate(StreamRequestImpl* owner) : owner_(owner) {}
virtual ~Delegate() {}
// Implementation of URLRequest::Delegate methods.
virtual void OnResponseStarted(URLRequest* request) OVERRIDE;
virtual void OnAuthRequired(URLRequest* request,
AuthChallengeInfo* auth_info) OVERRIDE;
virtual void OnCertificateRequested(URLRequest* request,
SSLCertRequestInfo* cert_request_info)
OVERRIDE;
virtual void OnSSLCertificateError(URLRequest* request,
const SSLInfo& ssl_info,
bool fatal) OVERRIDE;
virtual void OnReadCompleted(URLRequest* request, int bytes_read) OVERRIDE;
private:
StreamRequestImpl* owner_;
};
class StreamRequestImpl : public WebSocketStreamRequest {
public:
StreamRequestImpl(
const GURL& url,
const URLRequestContext* context,
scoped_ptr<WebSocketStream::ConnectDelegate> connect_delegate,
WebSocketHandshakeStreamCreateHelper* create_helper)
: delegate_(new Delegate(this)),
url_request_(url, DEFAULT_PRIORITY, delegate_.get(), context),
connect_delegate_(connect_delegate.Pass()),
create_helper_(create_helper) {}
// Destroying this object destroys the URLRequest, which cancels the request
// and so terminates the handshake if it is incomplete.
virtual ~StreamRequestImpl() {}
URLRequest* url_request() { return &url_request_; }
void PerformUpgrade() {
connect_delegate_->OnSuccess(create_helper_->stream()->Upgrade());
}
void ReportFailure() {
connect_delegate_->OnFailure(kWebSocketErrorAbnormalClosure);
}
private:
// |delegate_| needs to be declared before |url_request_| so that it gets
// initialised first.
scoped_ptr<Delegate> delegate_;
// Deleting the StreamRequestImpl object deletes this URLRequest object,
// cancelling the whole connection.
URLRequest url_request_;
scoped_ptr<WebSocketStream::ConnectDelegate> connect_delegate_;
// Owned by the URLRequest.
WebSocketHandshakeStreamCreateHelper* create_helper_;
};
void Delegate::OnResponseStarted(URLRequest* request) {
switch (request->GetResponseCode()) {
case HTTP_SWITCHING_PROTOCOLS:
owner_->PerformUpgrade();
return;
case HTTP_UNAUTHORIZED:
case HTTP_PROXY_AUTHENTICATION_REQUIRED:
return;
default:
owner_->ReportFailure();
}
}
void Delegate::OnAuthRequired(URLRequest* request,
AuthChallengeInfo* auth_info) {
request->CancelAuth();
}
void Delegate::OnCertificateRequested(URLRequest* request,
SSLCertRequestInfo* cert_request_info) {
request->ContinueWithCertificate(NULL);
}
void Delegate::OnSSLCertificateError(URLRequest* request,
const SSLInfo& ssl_info,
bool fatal) {
request->Cancel();
}
void Delegate::OnReadCompleted(URLRequest* request, int bytes_read) {
NOTREACHED();
}
// Internal implementation of CreateAndConnectStream and
// CreateAndConnectStreamForTesting.
scoped_ptr<WebSocketStreamRequest> CreateAndConnectStreamWithCreateHelper(
const GURL& socket_url,
scoped_ptr<WebSocketHandshakeStreamCreateHelper> create_helper,
const GURL& origin,
URLRequestContext* url_request_context,
const BoundNetLog& net_log,
scoped_ptr<WebSocketStream::ConnectDelegate> connect_delegate) {
scoped_ptr<StreamRequestImpl> request(
new StreamRequestImpl(socket_url,
url_request_context,
connect_delegate.Pass(),
create_helper.get()));
HttpRequestHeaders headers;
headers.SetHeader(websockets::kUpgrade, websockets::kWebSocketLowercase);
headers.SetHeader(HttpRequestHeaders::kConnection, websockets::kUpgrade);
headers.SetHeader(HttpRequestHeaders::kOrigin, origin.spec());
// TODO(ricea): Move the version number to websocket_handshake_constants.h
headers.SetHeader(websockets::kSecWebSocketVersion,
websockets::kSupportedVersion);
request->url_request()->SetExtraRequestHeaders(headers);
request->url_request()->SetUserData(
WebSocketHandshakeStreamBase::CreateHelper::DataKey(),
create_helper.release());
request->url_request()->SetLoadFlags(LOAD_DISABLE_CACHE |
LOAD_DO_NOT_PROMPT_FOR_LOGIN);
request->url_request()->Start();
return request.PassAs<WebSocketStreamRequest>();
}
} // namespace
WebSocketStreamRequest::~WebSocketStreamRequest() {}
WebSocketStream::WebSocketStream() {}
WebSocketStream::~WebSocketStream() {}
WebSocketStream::ConnectDelegate::~ConnectDelegate() {}
scoped_ptr<WebSocketStreamRequest> WebSocketStream::CreateAndConnectStream(
const GURL& socket_url,
const std::vector<std::string>& requested_subprotocols,
const GURL& origin,
URLRequestContext* url_request_context,
const BoundNetLog& net_log,
scoped_ptr<ConnectDelegate> connect_delegate) {
scoped_ptr<WebSocketHandshakeStreamCreateHelper> create_helper(
new WebSocketHandshakeStreamCreateHelper(requested_subprotocols));
return CreateAndConnectStreamWithCreateHelper(socket_url,
create_helper.Pass(),
origin,
url_request_context,
net_log,
connect_delegate.Pass());
}
// This is declared in websocket_test_util.h.
scoped_ptr<WebSocketStreamRequest> CreateAndConnectStreamForTesting(
const GURL& socket_url,
scoped_ptr<WebSocketHandshakeStreamCreateHelper> create_helper,
const GURL& origin,
URLRequestContext* url_request_context,
const BoundNetLog& net_log,
scoped_ptr<WebSocketStream::ConnectDelegate> connect_delegate) {
return CreateAndConnectStreamWithCreateHelper(socket_url,
create_helper.Pass(),
origin,
url_request_context,
net_log,
connect_delegate.Pass());
}
} // namespace net
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