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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_pool.h"
#include <utility>
#include "base/bind.h"
#include "base/check_op.h"
#include "base/feature_list.h"
#include "net/base/features.h"
#include "net/dns/public/secure_dns_policy.h"
#include "net/http/http_proxy_connect_job.h"
#include "net/log/net_log_event_type.h"
#include "net/log/net_log_with_source.h"
#include "net/socket/connect_job.h"
#include "net/socket/socks_connect_job.h"
#include "net/socket/ssl_connect_job.h"
#include "net/socket/stream_socket.h"
#include "net/spdy/spdy_session.h"
#include "net/spdy/spdy_session_pool.h"
namespace net {
namespace {
// The maximum duration, in seconds, to keep used idle persistent sockets alive.
int64_t g_used_idle_socket_timeout_s = 300; // 5 minutes
// Invoked by the transport socket pool after host resolution is complete
// to allow the connection to be aborted, if a matching SPDY session can
// be found. Returns OnHostResolutionCallbackResult::kMayBeDeletedAsync if such
// a session is found, as it will post a task that may delete the calling
// ConnectJob. Also returns kMayBeDeletedAsync if there may already be such
// a task posted.
OnHostResolutionCallbackResult OnHostResolution(
SpdySessionPool* spdy_session_pool,
const SpdySessionKey& spdy_session_key,
bool is_for_websockets,
const HostPortPair& host_port_pair,
const AddressList& addresses) {
DCHECK(host_port_pair == spdy_session_key.host_port_pair());
// It is OK to dereference spdy_session_pool, because the
// ClientSocketPoolManager will be destroyed in the same callback that
// destroys the SpdySessionPool.
return spdy_session_pool->OnHostResolutionComplete(
spdy_session_key, is_for_websockets, addresses);
}
} // namespace
ClientSocketPool::SocketParams::SocketParams(
std::unique_ptr<SSLConfig> ssl_config_for_origin,
std::unique_ptr<SSLConfig> ssl_config_for_proxy)
: ssl_config_for_origin_(std::move(ssl_config_for_origin)),
ssl_config_for_proxy_(std::move(ssl_config_for_proxy)) {}
ClientSocketPool::SocketParams::~SocketParams() = default;
scoped_refptr<ClientSocketPool::SocketParams>
ClientSocketPool::SocketParams::CreateForHttpForTesting() {
return base::MakeRefCounted<SocketParams>(nullptr /* ssl_config_for_origin */,
nullptr /* ssl_config_for_proxy */);
}
ClientSocketPool::GroupId::GroupId()
: socket_type_(SocketType::kHttp),
privacy_mode_(PrivacyMode::PRIVACY_MODE_DISABLED) {}
ClientSocketPool::GroupId::GroupId(const HostPortPair& destination,
SocketType socket_type,
PrivacyMode privacy_mode,
NetworkIsolationKey network_isolation_key,
SecureDnsPolicy secure_dns_policy)
: destination_(destination),
socket_type_(socket_type),
privacy_mode_(privacy_mode),
network_isolation_key_(
base::FeatureList::IsEnabled(
features::kPartitionConnectionsByNetworkIsolationKey)
? network_isolation_key
: NetworkIsolationKey()),
secure_dns_policy_(secure_dns_policy) {}
ClientSocketPool::GroupId::GroupId(const GroupId& group_id) = default;
ClientSocketPool::GroupId::~GroupId() = default;
ClientSocketPool::GroupId& ClientSocketPool::GroupId::operator=(
const GroupId& group_id) = default;
ClientSocketPool::GroupId& ClientSocketPool::GroupId::operator=(
GroupId&& group_id) = default;
std::string ClientSocketPool::GroupId::ToString() const {
std::string result = destination_.ToString();
switch (socket_type_) {
case ClientSocketPool::SocketType::kHttp:
break;
case ClientSocketPool::SocketType::kSsl:
result = "ssl/" + result;
break;
}
if (privacy_mode_)
result = "pm/" + result;
if (base::FeatureList::IsEnabled(
features::kPartitionConnectionsByNetworkIsolationKey)) {
result += " <";
result += network_isolation_key_.ToDebugString();
result += ">";
}
switch (secure_dns_policy_) {
case SecureDnsPolicy::kAllow:
break;
case SecureDnsPolicy::kDisable:
result = "dsd/" + result;
break;
}
return result;
}
ClientSocketPool::~ClientSocketPool() = default;
// static
base::TimeDelta ClientSocketPool::used_idle_socket_timeout() {
return base::TimeDelta::FromSeconds(g_used_idle_socket_timeout_s);
}
// static
void ClientSocketPool::set_used_idle_socket_timeout(base::TimeDelta timeout) {
DCHECK_GT(timeout.InSeconds(), 0);
g_used_idle_socket_timeout_s = timeout.InSeconds();
}
ClientSocketPool::ClientSocketPool() = default;
void ClientSocketPool::NetLogTcpClientSocketPoolRequestedSocket(
const NetLogWithSource& net_log,
const GroupId& group_id) {
if (net_log.IsCapturing()) {
// TODO(eroman): Split out the host and port parameters.
net_log.AddEvent(NetLogEventType::TCP_CLIENT_SOCKET_POOL_REQUESTED_SOCKET,
[&] { return NetLogGroupIdParams(group_id); });
}
}
base::Value ClientSocketPool::NetLogGroupIdParams(const GroupId& group_id) {
base::Value event_params(base::Value::Type::DICTIONARY);
event_params.SetStringKey("group_id", group_id.ToString());
return event_params;
}
std::unique_ptr<ConnectJob> ClientSocketPool::CreateConnectJob(
GroupId group_id,
scoped_refptr<SocketParams> socket_params,
const ProxyServer& proxy_server,
const absl::optional<NetworkTrafficAnnotationTag>& proxy_annotation_tag,
bool is_for_websockets,
const CommonConnectJobParams* common_connect_job_params,
RequestPriority request_priority,
SocketTag socket_tag,
ConnectJob::Delegate* delegate) {
bool using_ssl = group_id.socket_type() == ClientSocketPool::SocketType::kSsl;
// If applicable, set up a callback to handle checking for H2 IP pooling
// opportunities.
OnHostResolutionCallback resolution_callback;
if (using_ssl && proxy_server.is_direct()) {
resolution_callback = base::BindRepeating(
&OnHostResolution, common_connect_job_params->spdy_session_pool,
SpdySessionKey(
group_id.destination(), proxy_server, group_id.privacy_mode(),
SpdySessionKey::IsProxySession::kFalse, socket_tag,
group_id.network_isolation_key(), group_id.secure_dns_policy()),
is_for_websockets);
} else if (proxy_server.is_https()) {
resolution_callback = base::BindRepeating(
&OnHostResolution, common_connect_job_params->spdy_session_pool,
SpdySessionKey(proxy_server.host_port_pair(), ProxyServer::Direct(),
group_id.privacy_mode(),
SpdySessionKey::IsProxySession::kTrue, socket_tag,
group_id.network_isolation_key(),
group_id.secure_dns_policy()),
is_for_websockets);
}
return ConnectJob::CreateConnectJob(
using_ssl, group_id.destination(), proxy_server, proxy_annotation_tag,
socket_params->ssl_config_for_origin(),
socket_params->ssl_config_for_proxy(), is_for_websockets,
group_id.privacy_mode(), resolution_callback, request_priority,
socket_tag, group_id.network_isolation_key(),
group_id.secure_dns_policy(), common_connect_job_params, delegate);
}
} // namespace net
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