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// Copyright (c) 2012 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/client_socket_handle.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/compiler_specific.h"
#include "base/metrics/histogram.h"
#include "base/logging.h"
#include "net/base/net_errors.h"
#include "net/socket/client_socket_pool.h"
#include "net/socket/client_socket_pool_histograms.h"
namespace net {
ClientSocketHandle::ClientSocketHandle()
: is_initialized_(false),
pool_(NULL),
higher_pool_(NULL),
reuse_type_(ClientSocketHandle::UNUSED),
callback_(base::Bind(&ClientSocketHandle::OnIOComplete,
base::Unretained(this))),
is_ssl_error_(false) {}
ClientSocketHandle::~ClientSocketHandle() {
Reset();
}
void ClientSocketHandle::Reset() {
ResetInternal(true);
ResetErrorState();
}
void ClientSocketHandle::ResetInternal(bool cancel) {
// Was Init called?
if (!group_name_.empty()) {
// If so, we must have a pool.
CHECK(pool_);
if (is_initialized()) {
if (socket_) {
socket_->NetLog().EndEvent(NetLog::TYPE_SOCKET_IN_USE);
// Release the socket back to the ClientSocketPool so it can be
// deleted or reused.
pool_->ReleaseSocket(group_name_, socket_.Pass(), pool_id_);
} else {
// If the handle has been initialized, we should still have a
// socket.
NOTREACHED();
}
} else if (cancel) {
// If we did not get initialized yet and we have a socket
// request pending, cancel it.
pool_->CancelRequest(group_name_, this);
}
}
is_initialized_ = false;
socket_.reset();
group_name_.clear();
reuse_type_ = ClientSocketHandle::UNUSED;
user_callback_.Reset();
if (higher_pool_)
RemoveHigherLayeredPool(higher_pool_);
pool_ = NULL;
idle_time_ = base::TimeDelta();
init_time_ = base::TimeTicks();
setup_time_ = base::TimeDelta();
connect_timing_ = LoadTimingInfo::ConnectTiming();
pool_id_ = -1;
}
void ClientSocketHandle::ResetErrorState() {
is_ssl_error_ = false;
ssl_error_response_info_ = HttpResponseInfo();
pending_http_proxy_connection_.reset();
}
LoadState ClientSocketHandle::GetLoadState() const {
CHECK(!is_initialized());
CHECK(!group_name_.empty());
// Because of http://crbug.com/37810 we may not have a pool, but have
// just a raw socket.
if (!pool_)
return LOAD_STATE_IDLE;
return pool_->GetLoadState(group_name_, this);
}
bool ClientSocketHandle::IsPoolStalled() const {
if (!pool_)
return false;
return pool_->IsStalled();
}
void ClientSocketHandle::AddHigherLayeredPool(HigherLayeredPool* higher_pool) {
CHECK(higher_pool);
CHECK(!higher_pool_);
// TODO(mmenke): |pool_| should only be NULL in tests. Maybe stop doing that
// so this be be made into a DCHECK, and the same can be done in
// RemoveHigherLayeredPool?
if (pool_) {
pool_->AddHigherLayeredPool(higher_pool);
higher_pool_ = higher_pool;
}
}
void ClientSocketHandle::RemoveHigherLayeredPool(
HigherLayeredPool* higher_pool) {
CHECK(higher_pool_);
CHECK_EQ(higher_pool_, higher_pool);
if (pool_) {
pool_->RemoveHigherLayeredPool(higher_pool);
higher_pool_ = NULL;
}
}
bool ClientSocketHandle::GetLoadTimingInfo(
bool is_reused,
LoadTimingInfo* load_timing_info) const {
// Only return load timing information when there's a socket.
if (!socket_)
return false;
load_timing_info->socket_log_id = socket_->NetLog().source().id;
load_timing_info->socket_reused = is_reused;
// No times if the socket is reused.
if (is_reused)
return true;
load_timing_info->connect_timing = connect_timing_;
return true;
}
void ClientSocketHandle::SetSocket(scoped_ptr<StreamSocket> s) {
socket_ = s.Pass();
}
void ClientSocketHandle::OnIOComplete(int result) {
CompletionCallback callback = user_callback_;
user_callback_.Reset();
HandleInitCompletion(result);
callback.Run(result);
}
scoped_ptr<StreamSocket> ClientSocketHandle::PassSocket() {
return socket_.Pass();
}
void ClientSocketHandle::HandleInitCompletion(int result) {
CHECK_NE(ERR_IO_PENDING, result);
ClientSocketPoolHistograms* histograms = pool_->histograms();
histograms->AddErrorCode(result);
if (result != OK) {
if (!socket_.get())
ResetInternal(false); // Nothing to cancel since the request failed.
else
is_initialized_ = true;
return;
}
is_initialized_ = true;
CHECK_NE(-1, pool_id_) << "Pool should have set |pool_id_| to a valid value.";
setup_time_ = base::TimeTicks::Now() - init_time_;
histograms->AddSocketType(reuse_type());
switch (reuse_type()) {
case ClientSocketHandle::UNUSED:
histograms->AddRequestTime(setup_time());
break;
case ClientSocketHandle::UNUSED_IDLE:
histograms->AddUnusedIdleTime(idle_time());
break;
case ClientSocketHandle::REUSED_IDLE:
histograms->AddReusedIdleTime(idle_time());
break;
default:
NOTREACHED();
break;
}
// Broadcast that the socket has been acquired.
// TODO(eroman): This logging is not complete, in particular set_socket() and
// release() socket. It ends up working though, since those methods are being
// used to layer sockets (and the destination sources are the same).
DCHECK(socket_.get());
socket_->NetLog().BeginEvent(
NetLog::TYPE_SOCKET_IN_USE,
requesting_source_.ToEventParametersCallback());
}
} // namespace net
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