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// Copyright (c) 2006-2008 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_SOCKET_TCP_CLIENT_SOCKET_POOL_H_
#define NET_SOCKET_TCP_CLIENT_SOCKET_POOL_H_
#include <string>
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "base/time.h"
#include "base/timer.h"
#include "net/socket/client_socket_pool_base.h"
#include "net/socket/client_socket_pool.h"
namespace net {
class ClientSocketFactory;
// TCPConnectJob handles the host resolution necessary for socket creation
// and the tcp connect.
class TCPConnectJob : public ConnectJob {
public:
TCPConnectJob(const std::string& group_name,
const HostResolver::RequestInfo& resolve_info,
const ClientSocketHandle* handle,
base::TimeDelta timeout_duration,
ClientSocketFactory* client_socket_factory,
HostResolver* host_resolver,
Delegate* delegate);
virtual ~TCPConnectJob();
// ConnectJob methods.
private:
enum State {
kStateResolveHost,
kStateResolveHostComplete,
kStateTCPConnect,
kStateTCPConnectComplete,
kStateNone,
};
// Begins the host resolution and the TCP connect. Returns OK on success
// and ERR_IO_PENDING if it cannot immediately service the request.
// Otherwise, it returns a net error code.
virtual int ConnectInternal();
void OnIOComplete(int result);
// Runs the state transition loop.
int DoLoop(int result);
int DoResolveHost();
int DoResolveHostComplete(int result);
int DoTCPConnect();
int DoTCPConnectComplete(int result);
const HostResolver::RequestInfo resolve_info_;
ClientSocketFactory* const client_socket_factory_;
CompletionCallbackImpl<TCPConnectJob> callback_;
SingleRequestHostResolver resolver_;
AddressList addresses_;
State next_state_;
// The time the Connect() method was called (if it got called).
base::TimeTicks connect_start_time_;
DISALLOW_COPY_AND_ASSIGN(TCPConnectJob);
};
class TCPClientSocketPool : public ClientSocketPool {
public:
TCPClientSocketPool(int max_sockets,
int max_sockets_per_group,
HostResolver* host_resolver,
ClientSocketFactory* client_socket_factory);
// ClientSocketPool methods:
virtual int RequestSocket(const std::string& group_name,
const HostResolver::RequestInfo& resolve_info,
int priority,
ClientSocketHandle* handle,
CompletionCallback* callback);
virtual void CancelRequest(const std::string& group_name,
const ClientSocketHandle* handle);
virtual void ReleaseSocket(const std::string& group_name,
ClientSocket* socket);
virtual void CloseIdleSockets();
virtual int IdleSocketCount() const {
return base_->idle_socket_count();
}
virtual int IdleSocketCountInGroup(const std::string& group_name) const;
virtual LoadState GetLoadState(const std::string& group_name,
const ClientSocketHandle* handle) const;
private:
virtual ~TCPClientSocketPool();
class TCPConnectJobFactory
: public ClientSocketPoolBase::ConnectJobFactory {
public:
TCPConnectJobFactory(ClientSocketFactory* client_socket_factory,
HostResolver* host_resolver)
: client_socket_factory_(client_socket_factory),
host_resolver_(host_resolver) {}
virtual ~TCPConnectJobFactory() {}
// ClientSocketPoolBase::ConnectJobFactory methods.
virtual ConnectJob* NewConnectJob(
const std::string& group_name,
const ClientSocketPoolBase::Request& request,
ConnectJob::Delegate* delegate) const;
private:
ClientSocketFactory* const client_socket_factory_;
const scoped_refptr<HostResolver> host_resolver_;
DISALLOW_COPY_AND_ASSIGN(TCPConnectJobFactory);
};
// One might ask why ClientSocketPoolBase is also refcounted if its
// containing ClientSocketPool is already refcounted. The reason is because
// DoReleaseSocket() posts a task. If ClientSocketPool gets deleted between
// the posting of the task and the execution, then we'll hit the DCHECK that
// |ClientSocketPoolBase::group_map_| is empty.
scoped_refptr<ClientSocketPoolBase> base_;
DISALLOW_COPY_AND_ASSIGN(TCPClientSocketPool);
};
} // namespace net
#endif // NET_SOCKET_TCP_CLIENT_SOCKET_POOL_H_
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