| /* |
| * libjingle |
| * Copyright 2004--2005, Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "talk/base/basicpacketsocketfactory.h" |
| #include "talk/base/common.h" |
| #include "talk/base/helpers.h" |
| #include "talk/base/host.h" |
| #include "talk/base/logging.h" |
| #include "talk/p2p/client/basicportallocator.h" |
| #include "talk/p2p/base/common.h" |
| #include "talk/p2p/base/port.h" |
| #include "talk/p2p/base/relayport.h" |
| #include "talk/p2p/base/stunport.h" |
| #include "talk/p2p/base/tcpport.h" |
| #include "talk/p2p/base/udpport.h" |
| |
| using talk_base::CreateRandomId; |
| using talk_base::CreateRandomString; |
| |
| namespace { |
| |
| const uint32 MSG_CONFIG_START = 1; |
| const uint32 MSG_CONFIG_READY = 2; |
| const uint32 MSG_ALLOCATE = 3; |
| const uint32 MSG_ALLOCATION_PHASE = 4; |
| const uint32 MSG_SHAKE = 5; |
| |
| const uint32 ALLOCATE_DELAY = 250; |
| const uint32 ALLOCATION_STEP_DELAY = 1 * 1000; |
| |
| const int PHASE_UDP = 0; |
| const int PHASE_RELAY = 1; |
| const int PHASE_TCP = 2; |
| const int PHASE_SSLTCP = 3; |
| const int kNumPhases = 4; |
| |
| const float PREF_LOCAL_UDP = 1.0f; |
| const float PREF_LOCAL_STUN = 0.9f; |
| const float PREF_LOCAL_TCP = 0.8f; |
| const float PREF_RELAY = 0.5f; |
| |
| // Modifiers of the above constants |
| const float RELAY_PRIMARY_PREF_MODIFIER = 0.0f; |
| const float RELAY_BACKUP_PREF_MODIFIER = -0.2f; |
| |
| // Returns the phase in which a given local candidate (or rather, the port that |
| // gave rise to that local candidate) would have been created. |
| int LocalCandidateToPhase(const cricket::Candidate& candidate) { |
| cricket::ProtocolType proto; |
| bool result = cricket::StringToProto(candidate.protocol().c_str(), &proto); |
| if (result) { |
| if (candidate.type() == cricket::LOCAL_PORT_TYPE) { |
| switch (proto) { |
| case cricket::PROTO_UDP: return PHASE_UDP; |
| case cricket::PROTO_TCP: return PHASE_TCP; |
| default: ASSERT(false); |
| } |
| } else if (candidate.type() == cricket::STUN_PORT_TYPE) { |
| return PHASE_UDP; |
| } else if (candidate.type() == cricket::RELAY_PORT_TYPE) { |
| switch (proto) { |
| case cricket::PROTO_UDP: return PHASE_RELAY; |
| case cricket::PROTO_TCP: return PHASE_TCP; |
| case cricket::PROTO_SSLTCP: return PHASE_SSLTCP; |
| default: ASSERT(false); |
| } |
| } else { |
| ASSERT(false); |
| } |
| } else { |
| ASSERT(false); |
| } |
| return PHASE_UDP; // reached only with assert failure |
| } |
| |
| const int SHAKE_MIN_DELAY = 45 * 1000; // 45 seconds |
| const int SHAKE_MAX_DELAY = 90 * 1000; // 90 seconds |
| |
| int ShakeDelay() { |
| int range = SHAKE_MAX_DELAY - SHAKE_MIN_DELAY + 1; |
| return SHAKE_MIN_DELAY + CreateRandomId() % range; |
| } |
| |
| } // namespace |
| |
| namespace cricket { |
| |
| const uint32 DISABLE_ALL_PHASES = |
| PORTALLOCATOR_DISABLE_UDP |
| | PORTALLOCATOR_DISABLE_TCP |
| | PORTALLOCATOR_DISABLE_STUN |
| | PORTALLOCATOR_DISABLE_RELAY; |
| |
| // Performs the allocation of ports, in a sequenced (timed) manner, for a given |
| // network and IP address. |
| class AllocationSequence : public talk_base::MessageHandler { |
| public: |
| AllocationSequence(BasicPortAllocatorSession* session, |
| talk_base::Network* network, |
| PortConfiguration* config, |
| uint32 flags); |
| ~AllocationSequence(); |
| |
| // Disables the phases for a new sequence that this one already covers for an |
| // equivalent network setup. |
| void DisableEquivalentPhases(talk_base::Network* network, |
| PortConfiguration* config, uint32* flags); |
| |
| // Starts and stops the sequence. When started, it will continue allocating |
| // new ports on its own timed schedule. |
| void Start(); |
| void Stop(); |
| |
| // MessageHandler |
| void OnMessage(talk_base::Message* msg); |
| |
| void EnableProtocol(ProtocolType proto); |
| bool ProtocolEnabled(ProtocolType proto) const; |
| |
| private: |
| typedef std::vector<ProtocolType> ProtocolList; |
| |
| void CreateUDPPorts(); |
| void CreateTCPPorts(); |
| void CreateStunPorts(); |
| void CreateRelayPorts(); |
| |
| BasicPortAllocatorSession* session_; |
| talk_base::Network* network_; |
| talk_base::IPAddress ip_; |
| PortConfiguration* config_; |
| bool running_; |
| int step_; |
| int step_of_phase_[kNumPhases]; |
| uint32 flags_; |
| ProtocolList protocols_; |
| }; |
| |
| |
| // BasicPortAllocator |
| BasicPortAllocator::BasicPortAllocator( |
| talk_base::NetworkManager* network_manager, |
| talk_base::PacketSocketFactory* socket_factory) |
| : network_manager_(network_manager), |
| socket_factory_(socket_factory) { |
| ASSERT(socket_factory_ != NULL); |
| Construct(); |
| } |
| |
| BasicPortAllocator::BasicPortAllocator( |
| talk_base::NetworkManager* network_manager) |
| : network_manager_(network_manager), |
| socket_factory_(NULL) { |
| Construct(); |
| } |
| |
| BasicPortAllocator::BasicPortAllocator( |
| talk_base::NetworkManager* network_manager, |
| const talk_base::SocketAddress& stun_address, |
| const talk_base::SocketAddress& relay_address_udp, |
| const talk_base::SocketAddress& relay_address_tcp, |
| const talk_base::SocketAddress& relay_address_ssl) |
| : network_manager_(network_manager), |
| socket_factory_(NULL), |
| stun_address_(stun_address), |
| relay_address_udp_(relay_address_udp), |
| relay_address_tcp_(relay_address_tcp), |
| relay_address_ssl_(relay_address_ssl) { |
| Construct(); |
| } |
| |
| void BasicPortAllocator::Construct() { |
| best_writable_phase_ = -1; |
| allow_tcp_listen_ = true; |
| } |
| |
| BasicPortAllocator::~BasicPortAllocator() { |
| } |
| |
| int BasicPortAllocator::best_writable_phase() const { |
| // If we are configured with an HTTP proxy, the best bet is to use the relay |
| if ((best_writable_phase_ == -1) |
| && ((proxy().type == talk_base::PROXY_HTTPS) |
| || (proxy().type == talk_base::PROXY_UNKNOWN))) { |
| return PHASE_RELAY; |
| } |
| return best_writable_phase_; |
| } |
| |
| PortAllocatorSession *BasicPortAllocator::CreateSession( |
| const std::string &name, const std::string &session_type) { |
| return new BasicPortAllocatorSession(this, name, session_type); |
| } |
| |
| void BasicPortAllocator::AddWritablePhase(int phase) { |
| if ((best_writable_phase_ == -1) || (phase < best_writable_phase_)) |
| best_writable_phase_ = phase; |
| } |
| |
| // BasicPortAllocatorSession |
| BasicPortAllocatorSession::BasicPortAllocatorSession( |
| BasicPortAllocator *allocator, |
| const std::string &name, |
| const std::string &session_type) |
| : PortAllocatorSession(name, session_type, allocator->flags()), |
| allocator_(allocator), network_thread_(NULL), |
| socket_factory_(allocator->socket_factory()), allocation_started_(false), |
| network_manager_started_(false), |
| running_(false) { |
| allocator_->network_manager()->SignalNetworksChanged.connect( |
| this, &BasicPortAllocatorSession::OnNetworksChanged); |
| allocator_->network_manager()->StartUpdating(); |
| } |
| |
| BasicPortAllocatorSession::~BasicPortAllocatorSession() { |
| if (network_thread_ != NULL) |
| network_thread_->Clear(this); |
| |
| std::vector<PortData>::iterator it; |
| for (it = ports_.begin(); it != ports_.end(); it++) |
| delete it->port; |
| |
| for (uint32 i = 0; i < configs_.size(); ++i) |
| delete configs_[i]; |
| |
| for (uint32 i = 0; i < sequences_.size(); ++i) |
| delete sequences_[i]; |
| } |
| |
| void BasicPortAllocatorSession::GetInitialPorts() { |
| network_thread_ = talk_base::Thread::Current(); |
| if (!socket_factory_) { |
| owned_socket_factory_.reset( |
| new talk_base::BasicPacketSocketFactory(network_thread_)); |
| socket_factory_ = owned_socket_factory_.get(); |
| } |
| |
| network_thread_->Post(this, MSG_CONFIG_START); |
| |
| if (flags() & PORTALLOCATOR_ENABLE_SHAKER) |
| network_thread_->PostDelayed(ShakeDelay(), this, MSG_SHAKE); |
| } |
| |
| void BasicPortAllocatorSession::StartGetAllPorts() { |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| running_ = true; |
| if (allocation_started_) |
| network_thread_->PostDelayed(ALLOCATE_DELAY, this, MSG_ALLOCATE); |
| for (uint32 i = 0; i < sequences_.size(); ++i) |
| sequences_[i]->Start(); |
| for (size_t i = 0; i < ports_.size(); ++i) |
| ports_[i].port->Start(); |
| } |
| |
| void BasicPortAllocatorSession::StopGetAllPorts() { |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| running_ = false; |
| network_thread_->Clear(this, MSG_ALLOCATE); |
| for (uint32 i = 0; i < sequences_.size(); ++i) |
| sequences_[i]->Stop(); |
| } |
| |
| void BasicPortAllocatorSession::OnMessage(talk_base::Message *message) { |
| switch (message->message_id) { |
| case MSG_CONFIG_START: |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| GetPortConfigurations(); |
| break; |
| |
| case MSG_CONFIG_READY: |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| OnConfigReady(static_cast<PortConfiguration*>(message->pdata)); |
| break; |
| |
| case MSG_ALLOCATE: |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| OnAllocate(); |
| break; |
| |
| case MSG_SHAKE: |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| OnShake(); |
| break; |
| |
| default: |
| ASSERT(false); |
| } |
| } |
| |
| void BasicPortAllocatorSession::GetPortConfigurations() { |
| PortConfiguration* config = new PortConfiguration(allocator_->stun_address(), |
| CreateRandomString(16), |
| CreateRandomString(16), |
| ""); |
| PortConfiguration::PortList ports; |
| if (!allocator_->relay_address_udp().IsAny()) |
| ports.push_back(ProtocolAddress( |
| allocator_->relay_address_udp(), PROTO_UDP)); |
| if (!allocator_->relay_address_tcp().IsAny()) |
| ports.push_back(ProtocolAddress( |
| allocator_->relay_address_tcp(), PROTO_TCP)); |
| if (!allocator_->relay_address_ssl().IsAny()) |
| ports.push_back(ProtocolAddress( |
| allocator_->relay_address_ssl(), PROTO_SSLTCP)); |
| config->AddRelay(ports, RELAY_PRIMARY_PREF_MODIFIER); |
| |
| ConfigReady(config); |
| } |
| |
| void BasicPortAllocatorSession::ConfigReady(PortConfiguration* config) { |
| network_thread_->Post(this, MSG_CONFIG_READY, config); |
| } |
| |
| // Adds a configuration to the list. |
| void BasicPortAllocatorSession::OnConfigReady(PortConfiguration* config) { |
| if (config) |
| configs_.push_back(config); |
| |
| AllocatePorts(); |
| } |
| |
| void BasicPortAllocatorSession::AllocatePorts() { |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| network_thread_->Post(this, MSG_ALLOCATE); |
| } |
| |
| void BasicPortAllocatorSession::OnAllocate() { |
| if (network_manager_started_) |
| DoAllocate(); |
| |
| allocation_started_ = true; |
| if (running_) |
| network_thread_->PostDelayed(ALLOCATE_DELAY, this, MSG_ALLOCATE); |
| } |
| |
| // For each network, see if we have a sequence that covers it already. If not, |
| // create a new sequence to create the appropriate ports. |
| void BasicPortAllocatorSession::DoAllocate() { |
| std::vector<talk_base::Network*> networks; |
| allocator_->network_manager()->GetNetworks(&networks); |
| if (networks.empty()) { |
| LOG(LS_WARNING) << "Machine has no networks; no ports will be allocated"; |
| } else { |
| for (uint32 i = 0; i < networks.size(); ++i) { |
| PortConfiguration* config = NULL; |
| if (configs_.size() > 0) |
| config = configs_.back(); |
| |
| uint32 sequence_flags = flags(); |
| |
| // Disables phases that are not specified in this config. |
| if (!config || config->stun_address.IsNil()) { |
| // No STUN ports specified in this config. |
| sequence_flags |= PORTALLOCATOR_DISABLE_STUN; |
| } |
| if (!config || config->relays.empty()) { |
| // No relay ports specified in this config. |
| sequence_flags |= PORTALLOCATOR_DISABLE_RELAY; |
| } |
| |
| // Disable phases that would only create ports equivalent to |
| // ones that we have already made. |
| DisableEquivalentPhases(networks[i], config, &sequence_flags); |
| |
| if ((sequence_flags & DISABLE_ALL_PHASES) == DISABLE_ALL_PHASES) { |
| // New AllocationSequence would have nothing to do, so don't make it. |
| continue; |
| } |
| |
| AllocationSequence* sequence = |
| new AllocationSequence(this, networks[i], config, sequence_flags); |
| if (running_) |
| sequence->Start(); |
| |
| sequences_.push_back(sequence); |
| } |
| } |
| } |
| |
| void BasicPortAllocatorSession::OnNetworksChanged() { |
| network_manager_started_ = true; |
| if (allocation_started_) |
| DoAllocate(); |
| } |
| |
| void BasicPortAllocatorSession::DisableEquivalentPhases( |
| talk_base::Network* network, PortConfiguration* config, uint32* flags) { |
| for (uint32 i = 0; i < sequences_.size() && |
| (*flags & DISABLE_ALL_PHASES) != DISABLE_ALL_PHASES; ++i) { |
| sequences_[i]->DisableEquivalentPhases(network, config, flags); |
| } |
| } |
| |
| void BasicPortAllocatorSession::AddAllocatedPort(Port* port, |
| AllocationSequence * seq, |
| float pref, |
| bool prepare_address) { |
| if (!port) |
| return; |
| |
| port->set_name(name_); |
| port->set_preference(pref); |
| port->set_generation(generation()); |
| if (allocator_->proxy().type != talk_base::PROXY_NONE) |
| port->set_proxy(allocator_->user_agent(), allocator_->proxy()); |
| |
| PortData data; |
| data.port = port; |
| data.sequence = seq; |
| data.ready = false; |
| ports_.push_back(data); |
| |
| port->SignalAddressReady.connect(this, |
| &BasicPortAllocatorSession::OnAddressReady); |
| port->SignalConnectionCreated.connect(this, |
| &BasicPortAllocatorSession::OnConnectionCreated); |
| port->SignalDestroyed.connect(this, |
| &BasicPortAllocatorSession::OnPortDestroyed); |
| LOG_J(LS_INFO, port) << "Added port to allocator"; |
| |
| if (prepare_address) |
| port->PrepareAddress(); |
| if (running_) |
| port->Start(); |
| } |
| |
| void BasicPortAllocatorSession::OnAddressReady(Port *port) { |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| std::vector<PortData>::iterator it |
| = std::find(ports_.begin(), ports_.end(), port); |
| ASSERT(it != ports_.end()); |
| if (it->ready) |
| return; |
| it->ready = true; |
| SignalPortReady(this, port); |
| |
| // Only accumulate the candidates whose protocol has been enabled |
| std::vector<Candidate> candidates; |
| const std::vector<Candidate>& potentials = port->candidates(); |
| for (size_t i = 0; i < potentials.size(); ++i) { |
| ProtocolType pvalue; |
| if (!StringToProto(potentials[i].protocol().c_str(), &pvalue)) |
| continue; |
| if (it->sequence->ProtocolEnabled(pvalue)) { |
| candidates.push_back(potentials[i]); |
| } |
| } |
| if (!candidates.empty()) { |
| SignalCandidatesReady(this, candidates); |
| } |
| } |
| |
| void BasicPortAllocatorSession::OnProtocolEnabled(AllocationSequence * seq, |
| ProtocolType proto) { |
| std::vector<Candidate> candidates; |
| for (std::vector<PortData>::iterator it = ports_.begin(); |
| it != ports_.end(); ++it) { |
| if (!it->ready || (it->sequence != seq)) |
| continue; |
| |
| const std::vector<Candidate>& potentials = it->port->candidates(); |
| for (size_t i = 0; i < potentials.size(); ++i) { |
| ProtocolType pvalue; |
| if (!StringToProto(potentials[i].protocol().c_str(), &pvalue)) |
| continue; |
| if (pvalue == proto) { |
| candidates.push_back(potentials[i]); |
| } |
| } |
| } |
| if (!candidates.empty()) { |
| SignalCandidatesReady(this, candidates); |
| } |
| } |
| |
| void BasicPortAllocatorSession::OnPortDestroyed(Port* port) { |
| ASSERT(talk_base::Thread::Current() == network_thread_); |
| std::vector<PortData>::iterator iter = |
| std::find(ports_.begin(), ports_.end(), port); |
| ASSERT(iter != ports_.end()); |
| ports_.erase(iter); |
| |
| LOG_J(LS_INFO, port) << "Removed port from allocator (" |
| << static_cast<int>(ports_.size()) << " remaining)"; |
| } |
| |
| void BasicPortAllocatorSession::OnConnectionCreated(Port* port, |
| Connection* conn) { |
| conn->SignalStateChange.connect(this, |
| &BasicPortAllocatorSession::OnConnectionStateChange); |
| } |
| |
| void BasicPortAllocatorSession::OnConnectionStateChange(Connection* conn) { |
| if (conn->write_state() == Connection::STATE_WRITABLE) |
| allocator_->AddWritablePhase( |
| LocalCandidateToPhase(conn->local_candidate())); |
| } |
| |
| void BasicPortAllocatorSession::OnShake() { |
| LOG(INFO) << ">>>>> SHAKE <<<<< >>>>> SHAKE <<<<< >>>>> SHAKE <<<<<"; |
| |
| std::vector<Port*> ports; |
| std::vector<Connection*> connections; |
| |
| for (size_t i = 0; i < ports_.size(); ++i) { |
| if (ports_[i].ready) |
| ports.push_back(ports_[i].port); |
| } |
| |
| for (size_t i = 0; i < ports.size(); ++i) { |
| Port::AddressMap::const_iterator iter; |
| for (iter = ports[i]->connections().begin(); |
| iter != ports[i]->connections().end(); |
| ++iter) { |
| connections.push_back(iter->second); |
| } |
| } |
| |
| LOG(INFO) << ">>>>> Destroying " << ports.size() << " ports and " |
| << connections.size() << " connections"; |
| |
| for (size_t i = 0; i < connections.size(); ++i) |
| connections[i]->Destroy(); |
| |
| if (running_ || (ports.size() > 0) || (connections.size() > 0)) |
| network_thread_->PostDelayed(ShakeDelay(), this, MSG_SHAKE); |
| } |
| |
| // AllocationSequence |
| |
| AllocationSequence::AllocationSequence(BasicPortAllocatorSession* session, |
| talk_base::Network* network, |
| PortConfiguration* config, |
| uint32 flags) |
| : session_(session), network_(network), ip_(network->ip()), config_(config), |
| running_(false), step_(0), flags_(flags) { |
| // All of the phases up until the best-writable phase so far run in step 0. |
| // The other phases follow sequentially in the steps after that. If there is |
| // no best-writable so far, then only phase 0 occurs in step 0. |
| int last_phase_in_step_zero = |
| talk_base::_max(0, session->allocator()->best_writable_phase()); |
| for (int phase = 0; phase < kNumPhases; ++phase) |
| step_of_phase_[phase] = talk_base::_max(0, phase - last_phase_in_step_zero); |
| |
| // Immediately perform phase 0. |
| OnMessage(NULL); |
| } |
| |
| AllocationSequence::~AllocationSequence() { |
| session_->network_thread()->Clear(this); |
| } |
| |
| void AllocationSequence::DisableEquivalentPhases(talk_base::Network* network, |
| PortConfiguration* config, uint32* flags) { |
| if (!((network == network_) && (ip_ == network->ip()))) { |
| // Different network setup; nothing is equivalent. |
| return; |
| } |
| |
| // Else turn off the stuff that we've already got covered. |
| |
| // Every config implicitly specifies local, so turn that off right away. |
| *flags |= PORTALLOCATOR_DISABLE_UDP; |
| *flags |= PORTALLOCATOR_DISABLE_TCP; |
| |
| if (config_ && config) { |
| if (config_->stun_address == config->stun_address) { |
| // Already got this STUN server covered. |
| *flags |= PORTALLOCATOR_DISABLE_STUN; |
| } |
| if (!config_->relays.empty()) { |
| // Already got relays covered. |
| // NOTE: This will even skip a _different_ set of relay servers if we |
| // were to be given one, but that never happens in our codebase. Should |
| // probably get rid of the list in PortConfiguration and just keep a |
| // single relay server in each one. |
| *flags |= PORTALLOCATOR_DISABLE_RELAY; |
| } |
| } |
| } |
| |
| void AllocationSequence::Start() { |
| running_ = true; |
| session_->network_thread()->PostDelayed(ALLOCATION_STEP_DELAY, |
| this, |
| MSG_ALLOCATION_PHASE); |
| } |
| |
| void AllocationSequence::Stop() { |
| running_ = false; |
| session_->network_thread()->Clear(this, MSG_ALLOCATION_PHASE); |
| } |
| |
| void AllocationSequence::OnMessage(talk_base::Message* msg) { |
| ASSERT(talk_base::Thread::Current() == session_->network_thread()); |
| if (msg) |
| ASSERT(msg->message_id == MSG_ALLOCATION_PHASE); |
| |
| const char* const PHASE_NAMES[kNumPhases] = { |
| "Udp", "Relay", "Tcp", "SslTcp" |
| }; |
| |
| // Perform all of the phases in the current step. |
| for (int phase = 0; phase < kNumPhases; phase++) { |
| if (step_of_phase_[phase] != step_) |
| continue; |
| |
| LOG_J(LS_INFO, network_) << "Allocation Phase=" << PHASE_NAMES[phase] |
| << " (Step=" << step_ << ")"; |
| |
| switch (phase) { |
| case PHASE_UDP: |
| CreateUDPPorts(); |
| CreateStunPorts(); |
| EnableProtocol(PROTO_UDP); |
| break; |
| |
| case PHASE_RELAY: |
| CreateRelayPorts(); |
| break; |
| |
| case PHASE_TCP: |
| CreateTCPPorts(); |
| EnableProtocol(PROTO_TCP); |
| break; |
| |
| case PHASE_SSLTCP: |
| EnableProtocol(PROTO_SSLTCP); |
| break; |
| |
| default: |
| ASSERT(false); |
| } |
| } |
| |
| // TODO: use different delays for each stage |
| step_ += 1; |
| if (running_) { |
| session_->network_thread()->PostDelayed(ALLOCATION_STEP_DELAY, |
| this, |
| MSG_ALLOCATION_PHASE); |
| } |
| } |
| |
| void AllocationSequence::EnableProtocol(ProtocolType proto) { |
| if (!ProtocolEnabled(proto)) { |
| protocols_.push_back(proto); |
| session_->OnProtocolEnabled(this, proto); |
| } |
| } |
| |
| bool AllocationSequence::ProtocolEnabled(ProtocolType proto) const { |
| for (ProtocolList::const_iterator it = protocols_.begin(); |
| it != protocols_.end(); ++it) { |
| if (*it == proto) |
| return true; |
| } |
| return false; |
| } |
| |
| void AllocationSequence::CreateUDPPorts() { |
| if (flags_ & PORTALLOCATOR_DISABLE_UDP) { |
| LOG(LS_VERBOSE) << "AllocationSequence: UDP ports disabled, skipping."; |
| return; |
| } |
| |
| Port* port = UDPPort::Create(session_->network_thread(), |
| session_->socket_factory(), |
| network_, ip_, |
| session_->allocator()->min_port(), |
| session_->allocator()->max_port()); |
| if (port) |
| session_->AddAllocatedPort(port, this, PREF_LOCAL_UDP); |
| } |
| |
| void AllocationSequence::CreateTCPPorts() { |
| if (flags_ & PORTALLOCATOR_DISABLE_TCP) { |
| LOG(LS_VERBOSE) << "AllocationSequence: TCP ports disabled, skipping."; |
| return; |
| } |
| |
| Port* port = TCPPort::Create(session_->network_thread(), |
| session_->socket_factory(), |
| network_, ip_, |
| session_->allocator()->min_port(), |
| session_->allocator()->max_port(), |
| session_->allocator()->allow_tcp_listen()); |
| if (port) |
| session_->AddAllocatedPort(port, this, PREF_LOCAL_TCP); |
| } |
| |
| void AllocationSequence::CreateStunPorts() { |
| if (flags_ & PORTALLOCATOR_DISABLE_STUN) { |
| LOG(LS_VERBOSE) << "AllocationSequence: STUN ports disabled, skipping."; |
| return; |
| } |
| |
| // If BasicPortAllocatorSession::OnAllocate left STUN ports enabled then we |
| // ought to have an address for them here. |
| ASSERT(config_ && !config_->stun_address.IsNil()); |
| if (!(config_ && !config_->stun_address.IsNil())) { |
| LOG(LS_WARNING) |
| << "AllocationSequence: No STUN server configured, skipping."; |
| return; |
| } |
| |
| Port* port = StunPort::Create(session_->network_thread(), |
| session_->socket_factory(), |
| network_, ip_, |
| session_->allocator()->min_port(), |
| session_->allocator()->max_port(), |
| config_->stun_address); |
| if (port) |
| session_->AddAllocatedPort(port, this, PREF_LOCAL_STUN); |
| } |
| |
| void AllocationSequence::CreateRelayPorts() { |
| if (flags_ & PORTALLOCATOR_DISABLE_RELAY) { |
| LOG(LS_VERBOSE) << "AllocationSequence: Relay ports disabled, skipping."; |
| return; |
| } |
| |
| // If BasicPortAllocatorSession::OnAllocate left relay ports enabled then we |
| // ought to have a relay list for them here. |
| ASSERT(config_ && !config_->relays.empty()); |
| if (!(config_ && !config_->relays.empty())) { |
| LOG(LS_WARNING) |
| << "AllocationSequence: No relay server configured, skipping."; |
| return; |
| } |
| |
| PortConfiguration::RelayList::const_iterator relay; |
| for (relay = config_->relays.begin(); |
| relay != config_->relays.end(); ++relay) { |
| RelayPort* port = RelayPort::Create(session_->network_thread(), |
| session_->socket_factory(), |
| network_, ip_, |
| session_->allocator()->min_port(), |
| session_->allocator()->max_port(), |
| config_->username, config_->password, |
| config_->magic_cookie); |
| if (port) { |
| // Note: We must add the allocated port before we add addresses because |
| // the latter will create candidates that need name and preference |
| // settings. However, we also can't prepare the address (normally |
| // done by AddAllocatedPort) until we have these addresses. So we |
| // wait to do that until below. |
| session_->AddAllocatedPort(port, this, PREF_RELAY + relay->pref_modifier, |
| false); |
| |
| // Add the addresses of this protocol. |
| PortConfiguration::PortList::const_iterator relay_port; |
| for (relay_port = relay->ports.begin(); |
| relay_port != relay->ports.end(); |
| ++relay_port) { |
| port->AddServerAddress(*relay_port); |
| port->AddExternalAddress(*relay_port); |
| } |
| |
| // Start fetching an address for this port. |
| port->PrepareAddress(); |
| } |
| } |
| } |
| |
| // PortConfiguration |
| PortConfiguration::PortConfiguration(const talk_base::SocketAddress& sa, |
| const std::string& un, |
| const std::string& pw, |
| const std::string& mc) |
| : stun_address(sa), username(un), password(pw), magic_cookie(mc) { |
| } |
| |
| void PortConfiguration::AddRelay(const PortList& ports, float pref_modifier) { |
| RelayServer relay; |
| relay.ports = ports; |
| relay.pref_modifier = pref_modifier; |
| relays.push_back(relay); |
| } |
| |
| bool PortConfiguration::ResolveStunAddress() { |
| int err = 0; |
| if (!stun_address.ResolveIP(true, &err)) { |
| LOG(LS_ERROR) << "Unable to resolve STUN host " |
| << stun_address.hostname() << ". Error " << err; |
| return false; |
| } |
| return true; |
| } |
| |
| bool PortConfiguration::SupportsProtocol( |
| const PortConfiguration::RelayServer& relay, ProtocolType type) { |
| PortConfiguration::PortList::const_iterator relay_port; |
| for (relay_port = relay.ports.begin(); |
| relay_port != relay.ports.end(); |
| ++relay_port) { |
| if (relay_port->proto == type) |
| return true; |
| } |
| return false; |
| } |
| |
| } // namespace cricket |
