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// Copyright (c) 2006-2010 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.
// A Preconnect instance maintains state while a TCP/IP connection is made, and
// and then released into the pool of available connections for future use.
#ifndef NET_HTTP_PRECONNECT_H__
#define NET_HTTP_PRECONNECT_H__
#pragma once
#include "base/scoped_ptr.h"
#include "net/base/completion_callback.h"
#include "net/base/net_log.h"
#include "net/http/http_request_info.h"
#include "net/http/http_stream_factory.h"
namespace net {
class ProxyInfo;
struct SSLConfig;
class Preconnect {
public:
// Try to preconnect. Typically used by predictor when a subresource probably
// needs a connection. |count| may be used to request more than one connection
// be established in parallel.
static void DoPreconnect(HttpNetworkSession* session, const GURL& url,
int count = 1, HttpRequestInfo::RequestMotivation motivation =
HttpRequestInfo::PRECONNECT_MOTIVATED);
private:
explicit Preconnect(HttpNetworkSession* session);
virtual ~Preconnect();
void OnPreconnectComplete(int error_code);
// Request actual connection, via interface that tags request as needed for
// preconnect only (so that they can be merged with connections needed for
// navigations).
void Connect(const GURL& url, int count,
HttpRequestInfo::RequestMotivation motivation);
HttpNetworkSession * session_;
// HttpRequestInfo used for connecting.
scoped_ptr<HttpRequestInfo> request_info_;
// SSLConfig used for connecting.
scoped_ptr<SSLConfig> ssl_config_;
// ProxyInfo used for connecting.
scoped_ptr<ProxyInfo> proxy_info_;
// A net log to use for this preconnect.
BoundNetLog net_log_;
// Our preconnect.
scoped_ptr<HttpStreamRequest> stream_request_;
CompletionCallbackImpl<Preconnect> io_callback_;
DISALLOW_COPY_AND_ASSIGN(Preconnect);
};
} // namespace net
#endif // NET_HTTP_HTTP_REQUEST_INFO_H__
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