113 lines
4.0 KiB
C++
113 lines
4.0 KiB
C++
// Copyright 2020 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "cast/standalone_receiver/cast_service.h"
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#include <stdint.h>
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#include <array>
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#include <utility>
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#include "discovery/common/config.h"
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#include "platform/api/tls_connection_factory.h"
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#include "platform/base/interface_info.h"
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#include "platform/base/tls_listen_options.h"
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#include "util/crypto/random_bytes.h"
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#include "util/osp_logging.h"
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#include "util/stringprintf.h"
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namespace openscreen {
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namespace cast {
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namespace {
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constexpr uint16_t kDefaultCastServicePort = 8010;
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constexpr int kCastUniqueIdLength = 6;
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constexpr int kDefaultMaxBacklogSize = 64;
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const TlsListenOptions kDefaultListenOptions{kDefaultMaxBacklogSize};
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IPEndpoint DetermineEndpoint(const InterfaceInfo& interface) {
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const IPAddress address = interface.GetIpAddressV4()
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? interface.GetIpAddressV4()
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: interface.GetIpAddressV6();
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OSP_CHECK(address);
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return IPEndpoint{address, kDefaultCastServicePort};
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}
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discovery::Config MakeDiscoveryConfig(const InterfaceInfo& interface) {
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return discovery::Config{.network_info = {interface}};
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}
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} // namespace
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CastService::CastService(CastService::Configuration config)
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: local_endpoint_(DetermineEndpoint(config.interface)),
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credentials_(std::move(config.credentials)),
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agent_(config.task_runner, credentials_.provider.get()),
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mirroring_application_(config.task_runner,
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local_endpoint_.address,
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&agent_),
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socket_factory_(&agent_, agent_.cast_socket_client()),
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connection_factory_(
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TlsConnectionFactory::CreateFactory(&socket_factory_,
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config.task_runner)),
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discovery_service_(config.enable_discovery
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? discovery::CreateDnsSdService(
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config.task_runner,
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this,
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MakeDiscoveryConfig(config.interface))
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: LazyDeletedDiscoveryService()),
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discovery_publisher_(
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discovery_service_
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? MakeSerialDelete<
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discovery::DnsSdServicePublisher<ReceiverInfo>>(
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config.task_runner,
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discovery_service_.get(),
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kCastV2ServiceId,
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ReceiverInfoToDnsSdInstance)
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: LazyDeletedDiscoveryPublisher()) {
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connection_factory_->SetListenCredentials(credentials_.tls_credentials);
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connection_factory_->Listen(local_endpoint_, kDefaultListenOptions);
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if (discovery_publisher_) {
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ReceiverInfo info;
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info.port = local_endpoint_.port;
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if (config.interface.HasHardwareAddress()) {
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info.unique_id = HexEncode(config.interface.hardware_address.data(),
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config.interface.hardware_address.size());
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} else {
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OSP_LOG_WARN << "Hardware address for interface " << config.interface.name
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<< " is empty. Generating a random unique_id.";
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std::array<uint8_t, kCastUniqueIdLength> random_bytes;
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GenerateRandomBytes(random_bytes.data(), kCastUniqueIdLength);
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info.unique_id = HexEncode(random_bytes.data(), kCastUniqueIdLength);
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}
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info.friendly_name = config.friendly_name;
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info.model_name = config.model_name;
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info.capabilities = kHasVideoOutput | kHasAudioOutput;
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const Error error = discovery_publisher_->Register(info);
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if (!error.ok()) {
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OnFatalError(std::move(error));
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}
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}
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}
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CastService::~CastService() {
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if (discovery_publisher_) {
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discovery_publisher_->DeregisterAll();
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}
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}
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void CastService::OnFatalError(Error error) {
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OSP_LOG_FATAL << "Encountered fatal discovery error: " << error;
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}
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void CastService::OnRecoverableError(Error error) {
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OSP_LOG_ERROR << "Encountered recoverable discovery error: " << error;
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}
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} // namespace cast
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} // namespace openscreen
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