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// Copyright 2012 The Chromium Authors
// 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 <utility>
#include "base/check_op.h"
#include "base/compiler_specific.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/notreached.h"
#include "net/base/net_errors.h"
#include "net/base/trace_constants.h"
#include "net/base/tracing.h"
#include "net/log/net_log_event_type.h"
#include "net/socket/client_socket_pool.h"
#include "net/socket/connect_job.h"
namespace net {
ClientSocketHandle::ClientSocketHandle()
: resolve_error_info_(ResolveErrorInfo(OK)) {}
ClientSocketHandle::~ClientSocketHandle() {
weak_factory_.InvalidateWeakPtrs();
Reset();
}
int ClientSocketHandle::Init(
const ClientSocketPool::GroupId& group_id,
scoped_refptr<ClientSocketPool::SocketParams> socket_params,
const std::optional<NetworkTrafficAnnotationTag>& proxy_annotation_tag,
RequestPriority priority,
const SocketTag& socket_tag,
ClientSocketPool::RespectLimits respect_limits,
CompletionOnceCallback callback,
const ClientSocketPool::ProxyAuthCallback& proxy_auth_callback,
bool fail_if_alias_requires_proxy_override,
ClientSocketPool* pool,
const NetLogWithSource& net_log) {
requesting_source_ = net_log.source();
CHECK(group_id.destination().IsValid());
ResetInternal(true /* cancel */, false /* cancel_connect_job */);
ResetErrorState();
pool_ = pool;
group_id_ = group_id;
CompletionOnceCallback io_complete_callback =
base::BindOnce(&ClientSocketHandle::OnIOComplete, base::Unretained(this));
int rv = pool_->RequestSocket(
group_id, std::move(socket_params), proxy_annotation_tag, priority,
socket_tag, respect_limits, this, std::move(io_complete_callback),
proxy_auth_callback, fail_if_alias_requires_proxy_override, net_log);
if (rv == ERR_IO_PENDING) {
callback_ = std::move(callback);
} else {
HandleInitCompletion(rv);
}
return rv;
}
void ClientSocketHandle::SetPriority(RequestPriority priority) {
if (socket()) {
// The priority of the handle is no longer relevant to the socket pool;
// just return.
return;
}
if (pool_)
pool_->SetPriority(group_id_, this, priority);
}
void ClientSocketHandle::Reset() {
ResetInternal(true /* cancel */, false /* cancel_connect_job */);
ResetErrorState();
}
void ClientSocketHandle::ResetAndCloseSocket() {
if (is_initialized() && socket()) {
socket()->Disconnect();
}
ResetInternal(true /* cancel */, true /* cancel_connect_job */);
ResetErrorState();
}
LoadState ClientSocketHandle::GetLoadState() const {
CHECK(!is_initialized());
CHECK(group_id_.destination().IsValid());
// 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_id_, 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_ = nullptr;
}
}
void ClientSocketHandle::CloseIdleSocketsInGroup(
const char* net_log_reason_utf8) {
if (pool_)
pool_->CloseIdleSocketsInGroup(group_id_, net_log_reason_utf8);
}
void ClientSocketHandle::SetAdditionalErrorState(ConnectJob* connect_job) {
connection_attempts_ = connect_job->GetConnectionAttempts();
resolve_error_info_ = connect_job->GetResolveErrorInfo();
is_ssl_error_ = connect_job->IsSSLError();
ssl_cert_request_info_ = connect_job->GetCertRequestInfo();
}
void ClientSocketHandle::OnIOComplete(int result) {
TRACE_EVENT0(NetTracingCategory(), "ClientSocketHandle::OnIOComplete");
CompletionOnceCallback callback = std::move(callback_);
callback_.Reset();
HandleInitCompletion(result);
std::move(callback).Run(result);
}
void ClientSocketHandle::HandleInitCompletion(int result) {
CHECK_NE(ERR_IO_PENDING, result);
if (result != OK) {
if (!socket()) {
ResetInternal(false /* cancel */,
false /* cancel_connect_job */); // Nothing to cancel since
// the request failed.
} else {
set_is_initialized(true);
}
return;
}
set_is_initialized(true);
CHECK_NE(-1, group_generation_)
<< "Pool should have set |group_generation_| to a valid value.";
// 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());
socket()->NetLog().BeginEventReferencingSource(NetLogEventType::SOCKET_IN_USE,
requesting_source_);
}
void ClientSocketHandle::ResetInternal(bool cancel, bool cancel_connect_job) {
DCHECK(cancel || !cancel_connect_job);
// Was Init called?
if (group_id_.destination().IsValid()) {
// If so, we must have a pool.
CHECK(pool_);
if (is_initialized()) {
if (socket()) {
socket()->NetLog().EndEvent(NetLogEventType::SOCKET_IN_USE);
// Release the socket back to the ClientSocketPool so it can be
// deleted or reused.
pool_->ReleaseSocket(group_id_, PassSocket(), group_generation_);
} 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_id_, this, cancel_connect_job);
}
}
set_is_initialized(false);
PassSocket();
group_id_ = ClientSocketPool::GroupId();
set_reuse_type(SocketReuseType::kUnused);
callback_.Reset();
if (higher_pool_)
RemoveHigherLayeredPool(higher_pool_);
pool_ = nullptr;
idle_time_ = base::TimeDelta();
set_connect_timing(LoadTimingInfo::ConnectTiming());
group_generation_ = -1;
}
void ClientSocketHandle::ResetErrorState() {
resolve_error_info_ = ResolveErrorInfo(OK);
is_ssl_error_ = false;
ssl_cert_request_info_ = nullptr;
}
} // namespace net
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