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// Copyright 2014 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 "components/cronet/url_request_context_config.h"
#include <utility>
#include "base/json/json_reader.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/values.h"
#include "net/cert/cert_verifier.h"
#include "net/dns/host_resolver.h"
#include "net/http/http_server_properties.h"
#include "net/quic/quic_protocol.h"
#include "net/quic/quic_utils.h"
#include "net/url_request/url_request_context_builder.h"
namespace cronet {
namespace {
// TODO(xunjieli): Refactor constants in io_thread.cc.
const char kQuicFieldTrialName[] = "QUIC";
const char kQuicConnectionOptions[] = "connection_options";
const char kQuicStoreServerConfigsInProperties[] =
"store_server_configs_in_properties";
const char kQuicMaxServerConfigsStoredInProperties[] =
"max_server_configs_stored_in_properties";
const char kQuicDelayTcpRace[] = "delay_tcp_race";
const char kQuicMaxNumberOfLossyConnections[] =
"max_number_of_lossy_connections";
const char kQuicPacketLossThreshold[] = "packet_loss_threshold";
const char kQuicIdleConnectionTimeoutSeconds[] =
"idle_connection_timeout_seconds";
const char kQuicHostWhitelist[] = "host_whitelist";
const char kQuicCloseSessionsOnIpChange[] = "close_sessions_on_ip_change";
const char kQuicMigrateSessionsOnNetworkChange[] =
"migrate_sessions_on_network_change";
// AsyncDNS experiment dictionary name.
const char kAsyncDnsFieldTrialName[] = "AsyncDNS";
// Name of boolean to enable AsyncDNS experiment.
const char kAsyncDnsEnable[] = "enable";
void ParseAndSetExperimentalOptions(
const std::string& experimental_options,
net::URLRequestContextBuilder* context_builder,
net::NetLog* net_log) {
if (experimental_options.empty())
return;
DVLOG(1) << "Experimental Options:" << experimental_options;
scoped_ptr<base::Value> options =
base::JSONReader::Read(experimental_options);
if (!options) {
DCHECK(false) << "Parsing experimental options failed: "
<< experimental_options;
return;
}
scoped_ptr<base::DictionaryValue> dict =
base::DictionaryValue::From(std::move(options));
if (!dict) {
DCHECK(false) << "Experimental options string is not a dictionary: "
<< experimental_options;
return;
}
const base::DictionaryValue* quic_args = nullptr;
if (dict->GetDictionary(kQuicFieldTrialName, &quic_args)) {
std::string quic_connection_options;
if (quic_args->GetString(kQuicConnectionOptions,
&quic_connection_options)) {
context_builder->set_quic_connection_options(
net::QuicUtils::ParseQuicConnectionOptions(quic_connection_options));
}
// TODO(rtenneti): Delete this option after apps stop using it.
// Added this for backward compatibility.
bool quic_store_server_configs_in_properties = false;
if (quic_args->GetBoolean(kQuicStoreServerConfigsInProperties,
&quic_store_server_configs_in_properties)) {
context_builder->set_quic_max_server_configs_stored_in_properties(
net::kMaxQuicServersToPersist);
}
int quic_max_server_configs_stored_in_properties = 0;
if (quic_args->GetInteger(kQuicMaxServerConfigsStoredInProperties,
&quic_max_server_configs_stored_in_properties)) {
context_builder->set_quic_max_server_configs_stored_in_properties(
static_cast<size_t>(quic_max_server_configs_stored_in_properties));
}
bool quic_delay_tcp_race = false;
if (quic_args->GetBoolean(kQuicDelayTcpRace, &quic_delay_tcp_race)) {
context_builder->set_quic_delay_tcp_race(quic_delay_tcp_race);
}
int quic_max_number_of_lossy_connections = 0;
if (quic_args->GetInteger(kQuicMaxNumberOfLossyConnections,
&quic_max_number_of_lossy_connections)) {
context_builder->set_quic_max_number_of_lossy_connections(
quic_max_number_of_lossy_connections);
}
double quic_packet_loss_threshold = 0.0;
if (quic_args->GetDouble(kQuicPacketLossThreshold,
&quic_packet_loss_threshold)) {
context_builder->set_quic_packet_loss_threshold(
quic_packet_loss_threshold);
}
int quic_idle_connection_timeout_seconds = 0;
if (quic_args->GetInteger(kQuicIdleConnectionTimeoutSeconds,
&quic_idle_connection_timeout_seconds)) {
context_builder->set_quic_idle_connection_timeout_seconds(
quic_idle_connection_timeout_seconds);
}
std::string quic_host_whitelist;
if (quic_args->GetString(kQuicHostWhitelist, &quic_host_whitelist)) {
std::unordered_set<std::string> hosts;
for (const std::string& host :
base::SplitString(quic_host_whitelist, ",", base::TRIM_WHITESPACE,
base::SPLIT_WANT_ALL)) {
hosts.insert(host);
}
context_builder->set_quic_host_whitelist(hosts);
}
bool quic_close_sessions_on_ip_change = false;
if (quic_args->GetBoolean(kQuicCloseSessionsOnIpChange,
&quic_close_sessions_on_ip_change)) {
context_builder->set_quic_close_sessions_on_ip_change(
quic_close_sessions_on_ip_change);
}
bool quic_migrate_sessions_on_network_change = false;
if (quic_args->GetBoolean(kQuicMigrateSessionsOnNetworkChange,
&quic_migrate_sessions_on_network_change)) {
context_builder->set_quic_migrate_sessions_on_network_change(
quic_migrate_sessions_on_network_change);
}
}
const base::DictionaryValue* async_dns_args = nullptr;
if (dict->GetDictionary(kAsyncDnsFieldTrialName, &async_dns_args)) {
bool async_dns_enable = false;
if (async_dns_args->GetBoolean(kAsyncDnsEnable, &async_dns_enable) &&
async_dns_enable) {
if (net_log == nullptr) {
DCHECK(false) << "AsyncDNS experiment requires NetLog.";
} else {
scoped_ptr<net::HostResolver> host_resolver(
net::HostResolver::CreateDefaultResolver(net_log));
host_resolver->SetDnsClientEnabled(true);
context_builder->set_host_resolver(std::move(host_resolver));
}
}
}
}
} // namespace
URLRequestContextConfig::QuicHint::QuicHint(const std::string& host,
int port,
int alternate_port)
: host(host), port(port), alternate_port(alternate_port) {}
URLRequestContextConfig::QuicHint::~QuicHint() {}
URLRequestContextConfig::Pkp::Pkp(const std::string& host,
bool include_subdomains,
const base::Time& expiration_date)
: host(host),
include_subdomains(include_subdomains),
expiration_date(expiration_date) {}
URLRequestContextConfig::Pkp::~Pkp() {}
URLRequestContextConfig::URLRequestContextConfig(
bool enable_quic,
bool enable_spdy,
bool enable_sdch,
HttpCacheType http_cache,
int http_cache_max_size,
bool load_disable_cache,
const std::string& storage_path,
const std::string& user_agent,
const std::string& experimental_options,
const std::string& data_reduction_proxy_key,
const std::string& data_reduction_primary_proxy,
const std::string& data_reduction_fallback_proxy,
const std::string& data_reduction_secure_proxy_check_url,
scoped_ptr<net::CertVerifier> mock_cert_verifier)
: enable_quic(enable_quic),
enable_spdy(enable_spdy),
enable_sdch(enable_sdch),
http_cache(http_cache),
http_cache_max_size(http_cache_max_size),
load_disable_cache(load_disable_cache),
storage_path(storage_path),
user_agent(user_agent),
experimental_options(experimental_options),
data_reduction_proxy_key(data_reduction_proxy_key),
data_reduction_primary_proxy(data_reduction_primary_proxy),
data_reduction_fallback_proxy(data_reduction_fallback_proxy),
data_reduction_secure_proxy_check_url(
data_reduction_secure_proxy_check_url),
mock_cert_verifier(std::move(mock_cert_verifier)) {}
URLRequestContextConfig::~URLRequestContextConfig() {}
void URLRequestContextConfig::ConfigureURLRequestContextBuilder(
net::URLRequestContextBuilder* context_builder,
net::NetLog* net_log) {
std::string config_cache;
if (http_cache != DISABLED) {
net::URLRequestContextBuilder::HttpCacheParams cache_params;
if (http_cache == DISK && !storage_path.empty()) {
cache_params.type = net::URLRequestContextBuilder::HttpCacheParams::DISK;
cache_params.path = base::FilePath(storage_path);
} else {
cache_params.type =
net::URLRequestContextBuilder::HttpCacheParams::IN_MEMORY;
}
cache_params.max_size = http_cache_max_size;
context_builder->EnableHttpCache(cache_params);
} else {
context_builder->DisableHttpCache();
}
context_builder->set_user_agent(user_agent);
context_builder->SetSpdyAndQuicEnabled(enable_spdy, enable_quic);
context_builder->set_sdch_enabled(enable_sdch);
ParseAndSetExperimentalOptions(experimental_options, context_builder,
net_log);
if (mock_cert_verifier)
context_builder->SetCertVerifier(std::move(mock_cert_verifier));
// TODO(mef): Use |config| to set cookies.
}
} // namespace cronet
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