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// 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.
#ifndef NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_
#define NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_
#pragma once
#include <string>
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "net/base/completion_callback.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_log.h"
#include "net/http/http_auth_controller.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_request_info.h"
#include "net/http/http_response_info.h"
#include "net/socket/client_socket.h"
class GURL;
namespace net {
class AddressList;
class ClientSocketHandle;
class HttpStream;
class IOBuffer;;
class HttpProxyClientSocket : public ClientSocket {
public:
// Takes ownership of |transport_socket|, which should already be connected
// by the time Connect() is called. If tunnel is true then on Connect()
// this socket will establish an Http tunnel.
HttpProxyClientSocket(ClientSocketHandle* transport_socket,
const GURL& request_url, const HostPortPair& endpoint,
const scoped_refptr<HttpAuthController>& auth,
bool tunnel);
// On destruction Disconnect() is called.
virtual ~HttpProxyClientSocket();
// If Connect (or its callback) returns PROXY_AUTH_REQUESTED, then
// credentials should be added to the HttpAuthController before calling
// RestartWithAuth.
int RestartWithAuth(CompletionCallback* callback);
// Indicates if RestartWithAuth needs to be called. i.e. if Connect
// returned PROXY_AUTH_REQUESTED. Only valid after Connect has been called.
bool NeedsRestartWithAuth() const;
const HttpResponseInfo* GetResponseInfo() const {
return response_.headers ? &response_ : NULL;
}
// ClientSocket methods:
// Authenticates to the Http Proxy and then passes data freely.
virtual int Connect(CompletionCallback* callback);
virtual void Disconnect();
virtual bool IsConnected() const;
virtual bool IsConnectedAndIdle() const;
virtual const BoundNetLog& NetLog() const { return net_log_; }
// Socket methods:
virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback* callback);
virtual int Write(IOBuffer* buf, int buf_len, CompletionCallback* callback);
virtual bool SetReceiveBufferSize(int32 size);
virtual bool SetSendBufferSize(int32 size);
virtual int GetPeerAddress(AddressList* address) const;
private:
enum State {
STATE_NONE,
STATE_GENERATE_AUTH_TOKEN,
STATE_GENERATE_AUTH_TOKEN_COMPLETE,
STATE_SEND_REQUEST,
STATE_SEND_REQUEST_COMPLETE,
STATE_READ_HEADERS,
STATE_READ_HEADERS_COMPLETE,
STATE_RESOLVE_CANONICAL_NAME,
STATE_RESOLVE_CANONICAL_NAME_COMPLETE,
STATE_DRAIN_BODY,
STATE_DRAIN_BODY_COMPLETE,
STATE_DONE,
};
// The size in bytes of the buffer we use to drain the response body that
// we want to throw away. The response body is typically a small error
// page just a few hundred bytes long.
enum { kDrainBodyBufferSize = 1024 };
int PrepareForAuthRestart();
int DidDrainBodyForAuthRestart(bool keep_alive);
int HandleAuthChallenge();
void LogBlockedTunnelResponse(int response_code) const;
void DoCallback(int result);
void OnIOComplete(int result);
int DoLoop(int last_io_result);
int DoGenerateAuthToken();
int DoGenerateAuthTokenComplete(int result);
int DoSendRequest();
int DoSendRequestComplete(int result);
int DoReadHeaders();
int DoReadHeadersComplete(int result);
int DoDrainBody();
int DoDrainBodyComplete(int result);
CompletionCallbackImpl<HttpProxyClientSocket> io_callback_;
State next_state_;
// Stores the callback to the layer above, called on completing Connect().
CompletionCallback* user_callback_;
HttpRequestInfo request_;
HttpResponseInfo response_;
scoped_ptr<HttpStream> http_stream_;
scoped_refptr<IOBuffer> drain_buf_;
// Stores the underlying socket.
const scoped_ptr<ClientSocketHandle> transport_;
// The hostname and port of the endpoint. This is not necessarily the one
// specified by the URL, due to Alternate-Protocol or fixed testing ports.
const HostPortPair endpoint_;
scoped_refptr<HttpAuthController> auth_;
const bool tunnel_;
std::string request_headers_;
const BoundNetLog net_log_;
DISALLOW_COPY_AND_ASSIGN(HttpProxyClientSocket);
};
} // namespace net
#endif // NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_
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