blob: 7b18426fb2d8c0e8ced62958a2a15d592871dc7f [file] [log] [blame]
// Copyright (c) 2011 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/socks_client_socket_pool.h"
#include "base/time.h"
#include "base/values.h"
#include "googleurl/src/gurl.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/socks5_client_socket.h"
#include "net/socket/socks_client_socket.h"
#include "net/socket/transport_client_socket_pool.h"
namespace net {
SOCKSSocketParams::SOCKSSocketParams(
const scoped_refptr<TransportSocketParams>& proxy_server,
bool socks_v5,
const HostPortPair& host_port_pair,
RequestPriority priority,
const GURL& referrer)
: transport_params_(proxy_server),
destination_(host_port_pair),
socks_v5_(socks_v5) {
if (transport_params_)
ignore_limits_ = transport_params_->ignore_limits();
else
ignore_limits_ = false;
// The referrer is used by the DNS prefetch system to correlate resolutions
// with the page that triggered them. It doesn't impact the actual addresses
// that we resolve to.
destination_.set_referrer(referrer);
destination_.set_priority(priority);
}
SOCKSSocketParams::~SOCKSSocketParams() {}
// SOCKSConnectJobs will time out after this many seconds. Note this is on
// top of the timeout for the transport socket.
static const int kSOCKSConnectJobTimeoutInSeconds = 30;
SOCKSConnectJob::SOCKSConnectJob(
const std::string& group_name,
const scoped_refptr<SOCKSSocketParams>& socks_params,
const base::TimeDelta& timeout_duration,
TransportClientSocketPool* transport_pool,
HostResolver* host_resolver,
Delegate* delegate,
NetLog* net_log)
: ConnectJob(group_name, timeout_duration, delegate,
BoundNetLog::Make(net_log, NetLog::SOURCE_CONNECT_JOB)),
socks_params_(socks_params),
transport_pool_(transport_pool),
resolver_(host_resolver),
ALLOW_THIS_IN_INITIALIZER_LIST(
callback_(this, &SOCKSConnectJob::OnIOComplete)) {
}
SOCKSConnectJob::~SOCKSConnectJob() {
// We don't worry about cancelling the tcp socket since the destructor in
// scoped_ptr<ClientSocketHandle> transport_socket_handle_ will take care of
// it.
}
LoadState SOCKSConnectJob::GetLoadState() const {
switch (next_state_) {
case STATE_TRANSPORT_CONNECT:
case STATE_TRANSPORT_CONNECT_COMPLETE:
return transport_socket_handle_->GetLoadState();
case STATE_SOCKS_CONNECT:
case STATE_SOCKS_CONNECT_COMPLETE:
return LOAD_STATE_CONNECTING;
default:
NOTREACHED();
return LOAD_STATE_IDLE;
}
}
void SOCKSConnectJob::OnIOComplete(int result) {
int rv = DoLoop(result);
if (rv != ERR_IO_PENDING)
NotifyDelegateOfCompletion(rv); // Deletes |this|
}
int SOCKSConnectJob::DoLoop(int result) {
DCHECK_NE(next_state_, STATE_NONE);
int rv = result;
do {
State state = next_state_;
next_state_ = STATE_NONE;
switch (state) {
case STATE_TRANSPORT_CONNECT:
DCHECK_EQ(OK, rv);
rv = DoTransportConnect();
break;
case STATE_TRANSPORT_CONNECT_COMPLETE:
rv = DoTransportConnectComplete(rv);
break;
case STATE_SOCKS_CONNECT:
DCHECK_EQ(OK, rv);
rv = DoSOCKSConnect();
break;
case STATE_SOCKS_CONNECT_COMPLETE:
rv = DoSOCKSConnectComplete(rv);
break;
default:
NOTREACHED() << "bad state";
rv = ERR_FAILED;
break;
}
} while (rv != ERR_IO_PENDING && next_state_ != STATE_NONE);
return rv;
}
int SOCKSConnectJob::DoTransportConnect() {
next_state_ = STATE_TRANSPORT_CONNECT_COMPLETE;
transport_socket_handle_.reset(new ClientSocketHandle());
return transport_socket_handle_->Init(group_name(),
socks_params_->transport_params(),
socks_params_->destination().priority(),
&callback_,
transport_pool_,
net_log());
}
int SOCKSConnectJob::DoTransportConnectComplete(int result) {
if (result != OK)
return ERR_PROXY_CONNECTION_FAILED;
// Reset the timer to just the length of time allowed for SOCKS handshake
// so that a fast TCP connection plus a slow SOCKS failure doesn't take
// longer to timeout than it should.
ResetTimer(base::TimeDelta::FromSeconds(kSOCKSConnectJobTimeoutInSeconds));
next_state_ = STATE_SOCKS_CONNECT;
return result;
}
int SOCKSConnectJob::DoSOCKSConnect() {
next_state_ = STATE_SOCKS_CONNECT_COMPLETE;
// Add a SOCKS connection on top of the tcp socket.
if (socks_params_->is_socks_v5()) {
socket_.reset(new SOCKS5ClientSocket(transport_socket_handle_.release(),
socks_params_->destination()));
} else {
socket_.reset(new SOCKSClientSocket(transport_socket_handle_.release(),
socks_params_->destination(),
resolver_));
}
return socket_->Connect(&callback_);
}
int SOCKSConnectJob::DoSOCKSConnectComplete(int result) {
if (result != OK) {
socket_->Disconnect();
return result;
}
set_socket(socket_.release());
return result;
}
int SOCKSConnectJob::ConnectInternal() {
next_state_ = STATE_TRANSPORT_CONNECT;
return DoLoop(OK);
}
ConnectJob* SOCKSClientSocketPool::SOCKSConnectJobFactory::NewConnectJob(
const std::string& group_name,
const PoolBase::Request& request,
ConnectJob::Delegate* delegate) const {
return new SOCKSConnectJob(group_name,
request.params(),
ConnectionTimeout(),
transport_pool_,
host_resolver_,
delegate,
net_log_);
}
base::TimeDelta
SOCKSClientSocketPool::SOCKSConnectJobFactory::ConnectionTimeout() const {
return transport_pool_->ConnectionTimeout() +
base::TimeDelta::FromSeconds(kSOCKSConnectJobTimeoutInSeconds);
}
SOCKSClientSocketPool::SOCKSClientSocketPool(
int max_sockets,
int max_sockets_per_group,
ClientSocketPoolHistograms* histograms,
HostResolver* host_resolver,
TransportClientSocketPool* transport_pool,
NetLog* net_log)
: transport_pool_(transport_pool),
base_(max_sockets, max_sockets_per_group, histograms,
base::TimeDelta::FromSeconds(
ClientSocketPool::unused_idle_socket_timeout()),
base::TimeDelta::FromSeconds(kUsedIdleSocketTimeout),
new SOCKSConnectJobFactory(transport_pool,
host_resolver,
net_log)) {
}
SOCKSClientSocketPool::~SOCKSClientSocketPool() {}
int SOCKSClientSocketPool::RequestSocket(const std::string& group_name,
const void* socket_params,
RequestPriority priority,
ClientSocketHandle* handle,
CompletionCallback* callback,
const BoundNetLog& net_log) {
const scoped_refptr<SOCKSSocketParams>* casted_socket_params =
static_cast<const scoped_refptr<SOCKSSocketParams>*>(socket_params);
return base_.RequestSocket(group_name, *casted_socket_params, priority,
handle, callback, net_log);
}
void SOCKSClientSocketPool::RequestSockets(
const std::string& group_name,
const void* params,
int num_sockets,
const BoundNetLog& net_log) {
const scoped_refptr<SOCKSSocketParams>* casted_params =
static_cast<const scoped_refptr<SOCKSSocketParams>*>(params);
base_.RequestSockets(group_name, *casted_params, num_sockets, net_log);
}
void SOCKSClientSocketPool::CancelRequest(const std::string& group_name,
ClientSocketHandle* handle) {
base_.CancelRequest(group_name, handle);
}
void SOCKSClientSocketPool::ReleaseSocket(const std::string& group_name,
StreamSocket* socket, int id) {
base_.ReleaseSocket(group_name, socket, id);
}
void SOCKSClientSocketPool::Flush() {
base_.Flush();
}
void SOCKSClientSocketPool::CloseIdleSockets() {
base_.CloseIdleSockets();
}
int SOCKSClientSocketPool::IdleSocketCount() const {
return base_.idle_socket_count();
}
int SOCKSClientSocketPool::IdleSocketCountInGroup(
const std::string& group_name) const {
return base_.IdleSocketCountInGroup(group_name);
}
LoadState SOCKSClientSocketPool::GetLoadState(
const std::string& group_name, const ClientSocketHandle* handle) const {
return base_.GetLoadState(group_name, handle);
}
DictionaryValue* SOCKSClientSocketPool::GetInfoAsValue(
const std::string& name,
const std::string& type,
bool include_nested_pools) const {
DictionaryValue* dict = base_.GetInfoAsValue(name, type);
if (include_nested_pools) {
ListValue* list = new ListValue();
list->Append(transport_pool_->GetInfoAsValue("transport_socket_pool",
"transport_socket_pool",
false));
dict->Set("nested_pools", list);
}
return dict;
}
base::TimeDelta SOCKSClientSocketPool::ConnectionTimeout() const {
return base_.ConnectionTimeout();
}
ClientSocketPoolHistograms* SOCKSClientSocketPool::histograms() const {
return base_.histograms();
};
} // namespace net