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// Copyright (c) 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.
#include "net/http/http_proxy_client_socket_pool.h"
#include "base/time.h"
#include "googleurl/src/gurl.h"
#include "net/base/net_errors.h"
#include "net/http/http_network_session.h"
#include "net/http/http_proxy_client_socket.h"
#include "net/socket/client_socket_factory.h"
#include "net/socket/client_socket_handle.h"
#include "net/socket/client_socket_pool_base.h"
namespace net {
HttpProxySocketParams::HttpProxySocketParams(
const scoped_refptr<TCPSocketParams>& proxy_server,
const GURL& request_url,
HostPortPair endpoint,
scoped_refptr<HttpNetworkSession> session,
bool tunnel)
: tcp_params_(proxy_server),
request_url_(request_url),
endpoint_(endpoint),
session_(session),
tunnel_(tunnel) {
}
HttpProxySocketParams::~HttpProxySocketParams() {}
// HttpProxyConnectJobs will time out after this many seconds. Note this is on
// top of the timeout for the transport socket.
static const int kHttpProxyConnectJobTimeoutInSeconds = 30;
HttpProxyConnectJob::HttpProxyConnectJob(
const std::string& group_name,
const scoped_refptr<HttpProxySocketParams>& params,
const base::TimeDelta& timeout_duration,
const scoped_refptr<TCPClientSocketPool>& tcp_pool,
const scoped_refptr<HostResolver>& host_resolver,
Delegate* delegate,
NetLog* net_log)
: ConnectJob(group_name, timeout_duration, delegate,
BoundNetLog::Make(net_log, NetLog::SOURCE_CONNECT_JOB)),
params_(params),
tcp_pool_(tcp_pool),
resolver_(host_resolver),
ALLOW_THIS_IN_INITIALIZER_LIST(
callback_(this, &HttpProxyConnectJob::OnIOComplete)) {
}
HttpProxyConnectJob::~HttpProxyConnectJob() {}
LoadState HttpProxyConnectJob::GetLoadState() const {
switch (next_state_) {
case kStateTCPConnect:
case kStateTCPConnectComplete:
return tcp_socket_handle_->GetLoadState();
case kStateHttpProxyConnect:
case kStateHttpProxyConnectComplete:
return LOAD_STATE_ESTABLISHING_PROXY_TUNNEL;
default:
NOTREACHED();
return LOAD_STATE_IDLE;
}
}
int HttpProxyConnectJob::ConnectInternal() {
next_state_ = kStateTCPConnect;
return DoLoop(OK);
}
void HttpProxyConnectJob::OnIOComplete(int result) {
int rv = DoLoop(result);
if (rv != ERR_IO_PENDING)
NotifyDelegateOfCompletion(rv); // Deletes |this|
}
int HttpProxyConnectJob::DoLoop(int result) {
DCHECK_NE(next_state_, kStateNone);
int rv = result;
do {
State state = next_state_;
next_state_ = kStateNone;
switch (state) {
case kStateTCPConnect:
DCHECK_EQ(OK, rv);
rv = DoTCPConnect();
break;
case kStateTCPConnectComplete:
rv = DoTCPConnectComplete(rv);
break;
case kStateHttpProxyConnect:
DCHECK_EQ(OK, rv);
rv = DoHttpProxyConnect();
break;
case kStateHttpProxyConnectComplete:
rv = DoHttpProxyConnectComplete(rv);
break;
default:
NOTREACHED() << "bad state";
rv = ERR_FAILED;
break;
}
} while (rv != ERR_IO_PENDING && next_state_ != kStateNone);
return rv;
}
int HttpProxyConnectJob::DoTCPConnect() {
next_state_ = kStateTCPConnectComplete;
tcp_socket_handle_.reset(new ClientSocketHandle());
return tcp_socket_handle_->Init(
group_name(), params_->tcp_params(),
params_->tcp_params()->destination().priority(), &callback_, tcp_pool_,
net_log());
}
int HttpProxyConnectJob::DoTCPConnectComplete(int result) {
if (result != OK)
return result;
// Reset the timer to just the length of time allowed for HttpProxy handshake
// so that a fast TCP connection plus a slow HttpProxy failure doesn't take
// longer to timeout than it should.
ResetTimer(base::TimeDelta::FromSeconds(
kHttpProxyConnectJobTimeoutInSeconds));
next_state_ = kStateHttpProxyConnect;
return result;
}
int HttpProxyConnectJob::DoHttpProxyConnect() {
next_state_ = kStateHttpProxyConnectComplete;
const HostResolver::RequestInfo& tcp_destination =
params_->tcp_params()->destination();
HostPortPair proxy_server(tcp_destination.hostname(),
tcp_destination.port());
// Add a HttpProxy connection on top of the tcp socket.
socket_.reset(new HttpProxyClientSocket(tcp_socket_handle_.release(),
params_->request_url(),
params_->endpoint(),
proxy_server,
params_->session(),
params_->tunnel()));
return socket_->Connect(&callback_);
}
int HttpProxyConnectJob::DoHttpProxyConnectComplete(int result) {
if (result == OK || result == ERR_PROXY_AUTH_REQUESTED)
set_socket(socket_.release());
return result;
}
ConnectJob*
HttpProxyClientSocketPool::HttpProxyConnectJobFactory::NewConnectJob(
const std::string& group_name,
const PoolBase::Request& request,
ConnectJob::Delegate* delegate) const {
return new HttpProxyConnectJob(group_name, request.params(),
ConnectionTimeout(), tcp_pool_, host_resolver_,
delegate, net_log_);
}
base::TimeDelta
HttpProxyClientSocketPool::HttpProxyConnectJobFactory::ConnectionTimeout()
const {
return tcp_pool_->ConnectionTimeout() +
base::TimeDelta::FromSeconds(kHttpProxyConnectJobTimeoutInSeconds);
}
HttpProxyClientSocketPool::HttpProxyClientSocketPool(
int max_sockets,
int max_sockets_per_group,
const scoped_refptr<ClientSocketPoolHistograms>& histograms,
const scoped_refptr<HostResolver>& host_resolver,
const scoped_refptr<TCPClientSocketPool>& tcp_pool,
NetLog* net_log)
: base_(max_sockets, max_sockets_per_group, histograms,
base::TimeDelta::FromSeconds(
ClientSocketPool::unused_idle_socket_timeout()),
base::TimeDelta::FromSeconds(kUsedIdleSocketTimeout),
new HttpProxyConnectJobFactory(tcp_pool, host_resolver, net_log)) {}
HttpProxyClientSocketPool::~HttpProxyClientSocketPool() {}
int HttpProxyClientSocketPool::RequestSocket(const std::string& group_name,
const void* socket_params,
RequestPriority priority,
ClientSocketHandle* handle,
CompletionCallback* callback,
const BoundNetLog& net_log) {
const scoped_refptr<HttpProxySocketParams>* casted_socket_params =
static_cast<const scoped_refptr<HttpProxySocketParams>*>(socket_params);
return base_.RequestSocket(group_name, *casted_socket_params, priority,
handle, callback, net_log);
}
void HttpProxyClientSocketPool::CancelRequest(
const std::string& group_name,
ClientSocketHandle* handle) {
base_.CancelRequest(group_name, handle);
}
void HttpProxyClientSocketPool::ReleaseSocket(const std::string& group_name,
ClientSocket* socket, int id) {
base_.ReleaseSocket(group_name, socket, id);
}
void HttpProxyClientSocketPool::Flush() {
base_.Flush();
}
void HttpProxyClientSocketPool::CloseIdleSockets() {
base_.CloseIdleSockets();
}
int HttpProxyClientSocketPool::IdleSocketCountInGroup(
const std::string& group_name) const {
return base_.IdleSocketCountInGroup(group_name);
}
LoadState HttpProxyClientSocketPool::GetLoadState(
const std::string& group_name, const ClientSocketHandle* handle) const {
return base_.GetLoadState(group_name, handle);
}
} // namespace net
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