blob: 8fa2235043095e0d6a3158c0d461208ecb70ae0e [file] [log] [blame]
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <deque>
#include <string>
#include <utility>
#include <vector>
#include "webrtc/p2p/base/port.h"
#include "webrtc/p2p/base/stunrequest.h"
namespace cricket {
class RelayEntry;
class RelayConnection;
// Communicates using an allocated port on the relay server. For each
// remote candidate that we try to send data to a RelayEntry instance
// is created. The RelayEntry will try to reach the remote destination
// by connecting to all available server addresses in a pre defined
// order with a small delay in between. When a connection is
// successful all other connection attempts are aborted.
class RelayPort : public Port {
typedef std::pair<rtc::Socket::Option, int> OptionValue;
// RelayPort doesn't yet do anything fancy in the ctor.
static RelayPort* Create(rtc::Thread* thread,
rtc::PacketSocketFactory* factory,
rtc::Network* network,
const rtc::IPAddress& ip,
uint16_t min_port,
uint16_t max_port,
const std::string& username,
const std::string& password) {
return new RelayPort(thread, factory, network, ip, min_port, max_port,
username, password);
~RelayPort() override;
void AddServerAddress(const ProtocolAddress& addr);
void AddExternalAddress(const ProtocolAddress& addr);
const std::vector<OptionValue>& options() const { return options_; }
bool HasMagicCookie(const char* data, size_t size);
void PrepareAddress() override;
Connection* CreateConnection(const Candidate& address,
CandidateOrigin origin) override;
int SetOption(rtc::Socket::Option opt, int value) override;
int GetOption(rtc::Socket::Option opt, int* value) override;
int GetError() override;
bool SupportsProtocol(const std::string& protocol) const override {
// Relay port may create both TCP and UDP connections.
return true;
const ProtocolAddress * ServerAddress(size_t index) const;
bool IsReady() { return ready_; }
ProtocolType GetProtocol() const override {
// We shouldn't be using RelayPort, but we need to provide an
// implementation here.
return PROTO_UDP;
// Used for testing.
sigslot::signal1<const ProtocolAddress*> SignalConnectFailure;
sigslot::signal1<const ProtocolAddress*> SignalSoftTimeout;
RelayPort(rtc::Thread* thread,
rtc::PacketSocketFactory* factory,
const rtc::IPAddress& ip,
uint16_t min_port,
uint16_t max_port,
const std::string& username,
const std::string& password);
bool Init();
void SetReady();
int SendTo(const void* data,
size_t size,
const rtc::SocketAddress& addr,
const rtc::PacketOptions& options,
bool payload) override;
// Dispatches the given packet to the port or connection as appropriate.
void OnReadPacket(const char* data, size_t size,
const rtc::SocketAddress& remote_addr,
ProtocolType proto,
const rtc::PacketTime& packet_time);
// The OnSentPacket callback is left empty here since they are handled by
// RelayEntry.
void OnSentPacket(rtc::AsyncPacketSocket* socket,
const rtc::SentPacket& sent_packet) override {}
friend class RelayEntry;
std::deque<ProtocolAddress> server_addr_;
std::vector<ProtocolAddress> external_addr_;
bool ready_;
std::vector<RelayEntry*> entries_;
std::vector<OptionValue> options_;
int error_;
} // namespace cricket