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// Copyright 2020 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 "cast/standalone_receiver/cast_service.h"
#include <utility>
#include "discovery/common/config.h"
#include "platform/api/tls_connection_factory.h"
#include "platform/base/interface_info.h"
#include "platform/base/tls_listen_options.h"
#include "util/osp_logging.h"
#include "util/stringprintf.h"
namespace openscreen {
namespace cast {
namespace {
constexpr uint16_t kDefaultCastServicePort = 8010;
constexpr int kDefaultMaxBacklogSize = 64;
const TlsListenOptions kDefaultListenOptions{kDefaultMaxBacklogSize};
IPEndpoint DetermineEndpoint(const InterfaceInfo& interface) {
const IPAddress address = interface.GetIpAddressV4()
? interface.GetIpAddressV4()
: interface.GetIpAddressV6();
OSP_CHECK(address);
return IPEndpoint{address, kDefaultCastServicePort};
}
discovery::Config MakeDiscoveryConfig(const InterfaceInfo& interface) {
discovery::Config config;
discovery::Config::NetworkInfo::AddressFamilies supported_address_families =
discovery::Config::NetworkInfo::kNoAddressFamily;
if (interface.GetIpAddressV4()) {
supported_address_families |= discovery::Config::NetworkInfo::kUseIpV4;
} else if (interface.GetIpAddressV6()) {
supported_address_families |= discovery::Config::NetworkInfo::kUseIpV6;
}
config.network_info.push_back({interface, supported_address_families});
return config;
}
} // namespace
CastService::CastService(TaskRunner* task_runner,
const InterfaceInfo& interface,
GeneratedCredentials credentials,
const std::string& friendly_name,
const std::string& model_name,
bool enable_discovery)
: local_endpoint_(DetermineEndpoint(interface)),
credentials_(std::move(credentials)),
agent_(task_runner, credentials_.provider.get()),
mirroring_application_(task_runner, local_endpoint_.address, &agent_),
socket_factory_(&agent_, agent_.cast_socket_client()),
connection_factory_(
TlsConnectionFactory::CreateFactory(&socket_factory_, task_runner)),
discovery_service_(enable_discovery ? discovery::CreateDnsSdService(
task_runner,
this,
MakeDiscoveryConfig(interface))
: LazyDeletedDiscoveryService()),
discovery_publisher_(
discovery_service_
? MakeSerialDelete<discovery::DnsSdServicePublisher<ServiceInfo>>(
task_runner,
discovery_service_.get(),
kCastV2ServiceId,
ServiceInfoToDnsSdInstance)
: LazyDeletedDiscoveryPublisher()) {
connection_factory_->SetListenCredentials(credentials_.tls_credentials);
connection_factory_->Listen(local_endpoint_, kDefaultListenOptions);
if (discovery_publisher_) {
ServiceInfo info;
info.port = local_endpoint_.port;
info.unique_id = HexEncode(interface.hardware_address);
info.friendly_name = friendly_name;
info.model_name = model_name;
info.capabilities = kHasVideoOutput | kHasAudioOutput;
Error error = discovery_publisher_->Register(info);
if (!error.ok()) {
OnFatalError(std::move(error));
}
}
}
CastService::~CastService() {
if (discovery_publisher_) {
discovery_publisher_->DeregisterAll();
}
}
void CastService::OnFatalError(Error error) {
OSP_LOG_FATAL << "Encountered fatal discovery error: " << error;
}
void CastService::OnRecoverableError(Error error) {
OSP_LOG_ERROR << "Encountered recoverable discovery error: " << error;
}
} // namespace cast
} // namespace openscreen
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