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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 "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,
ClientSocketFactory* client_socket_factory,
ClientSocketPoolBase* pool);
~TCPConnectJob();
// ConnectJob methods.
// 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 Connect();
private:
// Handles asynchronous completion of IO. |result| represents the result of
// the IO operation.
void OnIOComplete(int result);
// Handles both asynchronous and synchronous completion of IO. |result|
// represents the result of the IO operation. |synchronous| indicates
// whether or not the previous IO operation completed synchronously or
// asynchronously. OnIOCompleteInternal returns the result of the next IO
// operation that executes, or just the value of |result|.
int OnIOCompleteInternal(int result, bool synchronous);
const std::string group_name_;
const HostResolver::RequestInfo resolve_info_;
const ClientSocketHandle* const handle_;
ClientSocketFactory* const client_socket_factory_;
CompletionCallbackImpl<TCPConnectJob> callback_;
scoped_ptr<ClientSocket> socket_;
ClientSocketPoolBase* const pool_;
SingleRequestHostResolver resolver_;
AddressList addresses_;
// 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_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 HostResolver* GetHostResolver() const {
return base_->GetHostResolver();
}
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:
explicit TCPConnectJobFactory(ClientSocketFactory* client_socket_factory)
: client_socket_factory_(client_socket_factory) {}
virtual ~TCPConnectJobFactory() {}
// ClientSocketPoolBase::ConnectJobFactory methods.
virtual ConnectJob* NewConnectJob(
const std::string& group_name,
const ClientSocketPoolBase::Request& request,
ClientSocketPoolBase* pool) const;
private:
ClientSocketFactory* const client_socket_factory_;
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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