46fb331bc5
Now UDPPort signals PortComplete or PortError when the Bind requests for all STUN servers are responded or failed. If any STUN bind is successful, PortComplete is signaled; otherwise, PortError is signaled. I discovered a bug in SocketAddress while working on this. It didn't consider two addresses unequal if they have unresolved IP and different hosts. It's fixed now. BUG=3310 R=mallinath@webrtc.org Review URL: https://webrtc-codereview.appspot.com/13879004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6707 4adac7df-926f-26a2-2b94-8c16560cd09d
254 lines
9.0 KiB
C++
254 lines
9.0 KiB
C++
/*
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* libjingle
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* Copyright 2004--2005, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TALK_P2P_BASE_STUNPORT_H_
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#define TALK_P2P_BASE_STUNPORT_H_
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#include <string>
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#include "talk/base/asyncpacketsocket.h"
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#include "talk/p2p/base/port.h"
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#include "talk/p2p/base/stunrequest.h"
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// TODO(mallinath) - Rename stunport.cc|h to udpport.cc|h.
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namespace talk_base {
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class AsyncResolver;
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class SignalThread;
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}
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namespace cricket {
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// Communicates using the address on the outside of a NAT.
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class UDPPort : public Port {
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public:
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static UDPPort* Create(talk_base::Thread* thread,
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talk_base::PacketSocketFactory* factory,
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talk_base::Network* network,
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talk_base::AsyncPacketSocket* socket,
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const std::string& username,
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const std::string& password) {
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UDPPort* port = new UDPPort(thread, factory, network, socket,
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username, password);
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if (!port->Init()) {
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delete port;
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port = NULL;
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}
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return port;
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}
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static UDPPort* Create(talk_base::Thread* thread,
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talk_base::PacketSocketFactory* factory,
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talk_base::Network* network,
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const talk_base::IPAddress& ip,
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int min_port, int max_port,
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const std::string& username,
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const std::string& password) {
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UDPPort* port = new UDPPort(thread, factory, network,
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ip, min_port, max_port,
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username, password);
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if (!port->Init()) {
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delete port;
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port = NULL;
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}
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return port;
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}
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virtual ~UDPPort();
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talk_base::SocketAddress GetLocalAddress() const {
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return socket_->GetLocalAddress();
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}
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const ServerAddresses server_addresses() const {
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return server_addresses_;
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}
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void
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set_server_addresses(const ServerAddresses& addresses) {
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server_addresses_ = addresses;
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}
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virtual void PrepareAddress();
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virtual Connection* CreateConnection(const Candidate& address,
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CandidateOrigin origin);
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virtual int SetOption(talk_base::Socket::Option opt, int value);
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virtual int GetOption(talk_base::Socket::Option opt, int* value);
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virtual int GetError();
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virtual bool HandleIncomingPacket(
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talk_base::AsyncPacketSocket* socket, const char* data, size_t size,
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const talk_base::SocketAddress& remote_addr,
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const talk_base::PacketTime& packet_time) {
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// All packets given to UDP port will be consumed.
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OnReadPacket(socket, data, size, remote_addr, packet_time);
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return true;
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}
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void set_stun_keepalive_delay(int delay) {
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stun_keepalive_delay_ = delay;
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}
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int stun_keepalive_delay() const {
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return stun_keepalive_delay_;
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}
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protected:
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UDPPort(talk_base::Thread* thread, talk_base::PacketSocketFactory* factory,
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talk_base::Network* network, const talk_base::IPAddress& ip,
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int min_port, int max_port,
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const std::string& username, const std::string& password);
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UDPPort(talk_base::Thread* thread, talk_base::PacketSocketFactory* factory,
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talk_base::Network* network, talk_base::AsyncPacketSocket* socket,
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const std::string& username, const std::string& password);
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bool Init();
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virtual int SendTo(const void* data, size_t size,
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const talk_base::SocketAddress& addr,
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const talk_base::PacketOptions& options,
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bool payload);
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void OnLocalAddressReady(talk_base::AsyncPacketSocket* socket,
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const talk_base::SocketAddress& address);
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void OnReadPacket(talk_base::AsyncPacketSocket* socket,
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const char* data, size_t size,
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const talk_base::SocketAddress& remote_addr,
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const talk_base::PacketTime& packet_time);
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void OnReadyToSend(talk_base::AsyncPacketSocket* socket);
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// This method will send STUN binding request if STUN server address is set.
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void MaybePrepareStunCandidate();
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void SendStunBindingRequests();
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private:
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// A helper class which can be called repeatedly to resolve multiple
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// addresses, as opposed to talk_base::AsyncResolverInterface, which can only
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// resolve one address per instance.
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class AddressResolver : public sigslot::has_slots<> {
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public:
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explicit AddressResolver(talk_base::PacketSocketFactory* factory);
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~AddressResolver();
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void Resolve(const talk_base::SocketAddress& address);
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bool GetResolvedAddress(const talk_base::SocketAddress& input,
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int family,
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talk_base::SocketAddress* output) const;
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// The signal is sent when resolving the specified address is finished. The
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// first argument is the input address, the second argument is the error
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// or 0 if it succeeded.
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sigslot::signal2<const talk_base::SocketAddress&, int> SignalDone;
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private:
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typedef std::map<talk_base::SocketAddress,
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talk_base::AsyncResolverInterface*> ResolverMap;
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void OnResolveResult(talk_base::AsyncResolverInterface* resolver);
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talk_base::PacketSocketFactory* socket_factory_;
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ResolverMap resolvers_;
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};
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// DNS resolution of the STUN server.
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void ResolveStunAddress(const talk_base::SocketAddress& stun_addr);
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void OnResolveResult(const talk_base::SocketAddress& input, int error);
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void SendStunBindingRequest(const talk_base::SocketAddress& stun_addr);
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// Below methods handles binding request responses.
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void OnStunBindingRequestSucceeded(
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const talk_base::SocketAddress& stun_server_addr,
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const talk_base::SocketAddress& stun_reflected_addr);
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void OnStunBindingOrResolveRequestFailed(
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const talk_base::SocketAddress& stun_server_addr);
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// Sends STUN requests to the server.
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void OnSendPacket(const void* data, size_t size, StunRequest* req);
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// TODO(mallinaht) - Move this up to cricket::Port when SignalAddressReady is
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// changed to SignalPortReady.
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void MaybeSetPortCompleteOrError();
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ServerAddresses server_addresses_;
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ServerAddresses bind_request_succeeded_servers_;
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ServerAddresses bind_request_failed_servers_;
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StunRequestManager requests_;
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talk_base::AsyncPacketSocket* socket_;
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int error_;
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talk_base::scoped_ptr<AddressResolver> resolver_;
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bool ready_;
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int stun_keepalive_delay_;
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friend class StunBindingRequest;
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};
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class StunPort : public UDPPort {
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public:
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static StunPort* Create(
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talk_base::Thread* thread,
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talk_base::PacketSocketFactory* factory,
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talk_base::Network* network,
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const talk_base::IPAddress& ip,
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int min_port, int max_port,
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const std::string& username,
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const std::string& password,
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const ServerAddresses& servers) {
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StunPort* port = new StunPort(thread, factory, network,
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ip, min_port, max_port,
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username, password, servers);
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if (!port->Init()) {
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delete port;
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port = NULL;
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}
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return port;
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}
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virtual ~StunPort() {}
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virtual void PrepareAddress() {
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SendStunBindingRequests();
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}
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protected:
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StunPort(talk_base::Thread* thread, talk_base::PacketSocketFactory* factory,
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talk_base::Network* network, const talk_base::IPAddress& ip,
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int min_port, int max_port,
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const std::string& username, const std::string& password,
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const ServerAddresses& servers)
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: UDPPort(thread, factory, network, ip, min_port, max_port, username,
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password) {
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// UDPPort will set these to local udp, updating these to STUN.
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set_type(STUN_PORT_TYPE);
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set_server_addresses(servers);
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}
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};
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} // namespace cricket
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#endif // TALK_P2P_BASE_STUNPORT_H_
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