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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.
#include "net/socket/tcp_client_socket_pool.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/time.h"
#include "net/base/net_errors.h"
#include "net/socket/client_socket_factory.h"
#include "net/socket/client_socket_handle.h"
#include "net/socket/client_socket_pool_base.h"
#include "net/socket/tcp_client_socket.h"
using base::TimeDelta;
namespace net {
TCPConnectJob::TCPConnectJob(
const std::string& group_name,
const HostResolver::RequestInfo& resolve_info,
const ClientSocketHandle* handle,
ClientSocketFactory* client_socket_factory,
HostResolver* host_resolver,
Delegate* delegate)
: group_name_(group_name),
resolve_info_(resolve_info),
handle_(handle),
client_socket_factory_(client_socket_factory),
ALLOW_THIS_IN_INITIALIZER_LIST(
callback_(this,
&TCPConnectJob::OnIOComplete)),
delegate_(delegate),
resolver_(host_resolver) {}
TCPConnectJob::~TCPConnectJob() {
// We don't worry about cancelling the host resolution and TCP connect, since
// ~SingleRequestHostResolver and ~ClientSocket will take care of it.
}
int TCPConnectJob::Connect() {
set_load_state(LOAD_STATE_RESOLVING_HOST);
int rv = resolver_.Resolve(resolve_info_, &addresses_, &callback_);
if (rv != ERR_IO_PENDING)
rv = OnIOCompleteInternal(rv, true /* synchronous */);
return rv;
}
void TCPConnectJob::OnIOComplete(int result) {
OnIOCompleteInternal(result, false /* asynchronous */);
}
int TCPConnectJob::OnIOCompleteInternal(
int result, bool synchronous) {
CHECK(result != ERR_IO_PENDING);
if (result == OK && load_state() == LOAD_STATE_RESOLVING_HOST) {
set_load_state(LOAD_STATE_CONNECTING);
socket_.reset(client_socket_factory_->CreateTCPClientSocket(addresses_));
connect_start_time_ = base::TimeTicks::Now();
result = socket_->Connect(&callback_);
if (result == ERR_IO_PENDING)
return result;
}
if (result == OK) {
DCHECK_EQ(load_state(), LOAD_STATE_CONNECTING);
CHECK(connect_start_time_ != base::TimeTicks());
base::TimeDelta connect_duration =
base::TimeTicks::Now() - connect_start_time_;
UMA_HISTOGRAM_CLIPPED_TIMES("Net.TCP_Connection_Latency",
connect_duration,
base::TimeDelta::FromMilliseconds(1),
base::TimeDelta::FromMinutes(10),
100);
}
// Now, we either succeeded at Connect()'ing, or we failed at host resolution
// or Connect()'ing. Either way, we'll run the callback to alert the client.
delegate_->OnConnectJobComplete(
group_name_,
handle_,
result == OK ? socket_.release() : NULL,
result,
!synchronous);
// |this| is deleted after this point.
return result;
}
ConnectJob* TCPClientSocketPool::TCPConnectJobFactory::NewConnectJob(
const std::string& group_name,
const ClientSocketPoolBase::Request& request,
ConnectJob::Delegate* delegate) const {
return new TCPConnectJob(
group_name, request.resolve_info, request.handle,
client_socket_factory_, host_resolver_, delegate);
}
TCPClientSocketPool::TCPClientSocketPool(
int max_sockets_per_group,
HostResolver* host_resolver,
ClientSocketFactory* client_socket_factory)
: base_(new ClientSocketPoolBase(
max_sockets_per_group,
new TCPConnectJobFactory(client_socket_factory, host_resolver))) {}
TCPClientSocketPool::~TCPClientSocketPool() {}
int TCPClientSocketPool::RequestSocket(
const std::string& group_name,
const HostResolver::RequestInfo& resolve_info,
int priority,
ClientSocketHandle* handle,
CompletionCallback* callback) {
return base_->RequestSocket(
group_name, resolve_info, priority, handle, callback);
}
void TCPClientSocketPool::CancelRequest(
const std::string& group_name,
const ClientSocketHandle* handle) {
base_->CancelRequest(group_name, handle);
}
void TCPClientSocketPool::ReleaseSocket(
const std::string& group_name,
ClientSocket* socket) {
base_->ReleaseSocket(group_name, socket);
}
void TCPClientSocketPool::CloseIdleSockets() {
base_->CloseIdleSockets();
}
int TCPClientSocketPool::IdleSocketCountInGroup(
const std::string& group_name) const {
return base_->IdleSocketCountInGroup(group_name);
}
LoadState TCPClientSocketPool::GetLoadState(
const std::string& group_name, const ClientSocketHandle* handle) const {
return base_->GetLoadState(group_name, handle);
}
} // namespace net
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