Exemplo n.º 1
0
Arquivo: ICE.cs Projeto: quangfox/Voip
        public void TellRemoteEndToUseThisPair(RTPStream stream, string strUsername, string strPassword)
        {
            if (IsControlling == false)
            {
                throw new Exception("Only controlling endpoint can send a usecandidate attribute");
            }

            STUN2Message msgRequest = new STUN2Message();

            msgRequest.Method = StunMethod.Binding;
            msgRequest.Class  = StunClass.Request;

            PriorityAttribute pattr = new PriorityAttribute();

            pattr.Priority = (int)CalculatePriority(110, 30, this.LocalCandidate.component); ///Peer reflexive, not sure of the purpose of this yet  //this.Priority;
            msgRequest.AddAttribute(pattr);

            IceControllingAttribute cattr = new IceControllingAttribute();

            msgRequest.AddAttribute(cattr);

            UseCandidateAttribute uattr = new UseCandidateAttribute();

            msgRequest.AddAttribute(uattr);

            if (strUsername != null)
            {
                UserNameAttribute unameattr = new UserNameAttribute();
                unameattr.UserName = strUsername;
                msgRequest.AddAttribute(unameattr);
            }


            /// Add message integrity, computes over all the items currently added
            ///
            int nLengthWithoutMessageIntegrity = msgRequest.Bytes.Length;
            MessageIntegrityAttribute mac      = new MessageIntegrityAttribute();

            msgRequest.AddAttribute(mac);
            mac.ComputeHMACShortTermCredentials(msgRequest, nLengthWithoutMessageIntegrity, strPassword);

            /// Add fingerprint
            ///
            int nLengthWithoutFingerPrint = msgRequest.Bytes.Length;
            FingerPrintAttribute fattr    = new FingerPrintAttribute();

            msgRequest.AddAttribute(fattr);
            fattr.ComputeCRC(msgRequest, nLengthWithoutFingerPrint);

            foreach (int nNextTimeout in Timeouts)
            {
                STUNMessage ResponseMessage = stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgRequest, nNextTimeout);
                if (ResponseMessage != null)
                {
                    break;
                }
            }
        }
Exemplo n.º 2
0
Arquivo: ICE.cs Projeto: quangfox/Voip
        public void SendIndication(RTPStream stream)
        {
            /// Need to send a binding indication every 3 s from now on?
            STUN2Message msgBindingIndication = new STUN2Message();

            msgBindingIndication.Method = StunMethod.Binding;
            msgBindingIndication.Class  = StunClass.Inidication;


            /// Add fingerprint
            ///
            int nLengthWithoutFingerPrint = msgBindingIndication.Bytes.Length;
            FingerPrintAttribute fattr    = new FingerPrintAttribute();

            msgBindingIndication.AddAttribute(fattr);
            fattr.ComputeCRC(msgBindingIndication, nLengthWithoutFingerPrint);
            stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgBindingIndication, 0);
        }
Exemplo n.º 3
0
Arquivo: ICE.cs Projeto: quangfox/Voip
        public void PerformOutgoingSTUNCheck(RTPStream stream, string strUsername, string strPassword)
        {
            STUN2Message msgRequest = new STUN2Message();

            msgRequest.Method = StunMethod.Binding;
            msgRequest.Class  = StunClass.Request;


            //MappedAddressAttribute mattr = new MappedAddressAttribute();
            //mattr.IPAddress = LocalCandidate.IPEndPoint.Address;
            //mattr.Port = (ushort)LocalCandidate.IPEndPoint.Port;

            //msgRequest.AddAttribute(mattr);

            PriorityAttribute pattr = new PriorityAttribute();

            pattr.Priority = (int)CalculatePriority(110, 10, this.LocalCandidate.component);  ///Peer reflexive, not sure of the purpose of this yet  //this.Priority;
            msgRequest.AddAttribute(pattr);

            if (IsControlling == true)
            {
                IceControllingAttribute cattr = new IceControllingAttribute();
                msgRequest.AddAttribute(cattr);
            }
            else
            {
                IceControlledAttribute cattr = new IceControlledAttribute();
                msgRequest.AddAttribute(cattr);
            }

            if (strUsername != null)
            {
                UserNameAttribute unameattr = new UserNameAttribute();
                unameattr.UserName = strUsername;
                msgRequest.AddAttribute(unameattr);
            }



            /// Add message integrity, computes over all the items currently added
            ///
            int nLengthWithoutMessageIntegrity = msgRequest.Bytes.Length;
            MessageIntegrityAttribute mac      = new MessageIntegrityAttribute();

            msgRequest.AddAttribute(mac);
            mac.ComputeHMACShortTermCredentials(msgRequest, nLengthWithoutMessageIntegrity, strPassword);

            /// Add fingerprint
            ///
            int nLengthWithoutFingerPrint = msgRequest.Bytes.Length;
            FingerPrintAttribute fattr    = new FingerPrintAttribute();

            msgRequest.AddAttribute(fattr);
            fattr.ComputeCRC(msgRequest, nLengthWithoutFingerPrint);


            foreach (int nNextTimeout in Timeouts)
            {
                STUNMessage ResponseMessage = stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgRequest, nNextTimeout);

                ResponseEndpoint = null;
                if (ResponseMessage != null)
                {
                    foreach (STUNAttributeContainer cont in ResponseMessage.Attributes)
                    {
                        if (cont.ParsedAttribute.Type == StunAttributeType.MappedAddress)
                        {
                            MappedAddressAttribute attrib = cont.ParsedAttribute as MappedAddressAttribute;
                            ResponseEndpoint = new IPEndPoint(attrib.IPAddress, attrib.Port);
                        }
                    }
                    System.Diagnostics.Debug.WriteLine("STUN check for remote candidate {0} succeeded", this.RemoteCandidate.IPEndPoint);
                    this.CandidatePairState = RTP.CandidatePairState.Succeeded;
                    break;
                }
                else
                {
                    System.Diagnostics.Debug.WriteLine("STUN check for remote candidate {0} failed", this.RemoteCandidate.IPEndPoint);
                    this.CandidatePairState = RTP.CandidatePairState.Failed;
                }
            }
        }
Exemplo n.º 4
0
        public void TellRemoteEndToUseThisPair(RTPStream stream, string strUsername, string strPassword)
        {
            if (IsControlling == false)
                throw new Exception("Only controlling endpoint can send a usecandidate attribute");

            STUN2Message msgRequest = new STUN2Message();
            msgRequest.Method = StunMethod.Binding;
            msgRequest.Class = StunClass.Request;

            PriorityAttribute pattr = new PriorityAttribute();
            pattr.Priority = (int)CalculatePriority(110, 30, this.LocalCandidate.component); ///Peer reflexive, not sure of the purpose of this yet  //this.Priority;
            msgRequest.AddAttribute(pattr);

            IceControllingAttribute cattr = new IceControllingAttribute();
            msgRequest.AddAttribute(cattr);

            UseCandidateAttribute uattr = new UseCandidateAttribute();
            msgRequest.AddAttribute(uattr);

            if (strUsername != null)
            {
                UserNameAttribute unameattr = new UserNameAttribute();
                unameattr.UserName = strUsername;
                msgRequest.AddAttribute(unameattr);
            }

            /// Add message integrity, computes over all the items currently added
            ///
            int nLengthWithoutMessageIntegrity = msgRequest.Bytes.Length;
            MessageIntegrityAttribute mac = new MessageIntegrityAttribute();
            msgRequest.AddAttribute(mac);
            mac.ComputeHMACShortTermCredentials(msgRequest, nLengthWithoutMessageIntegrity, strPassword);

            /// Add fingerprint
            ///
            int nLengthWithoutFingerPrint = msgRequest.Bytes.Length;
            FingerPrintAttribute fattr = new FingerPrintAttribute();
            msgRequest.AddAttribute(fattr);
            fattr.ComputeCRC(msgRequest, nLengthWithoutFingerPrint);

            foreach (int nNextTimeout in Timeouts)
            {
                STUNMessage ResponseMessage = stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgRequest, nNextTimeout);
                if (ResponseMessage != null)
                    break;
            }
        }
Exemplo n.º 5
0
        public void SendIndication(RTPStream stream)
        {
            /// Need to send a binding indication every 3 s from now on?
            STUN2Message msgBindingIndication = new STUN2Message();
            msgBindingIndication.Method = StunMethod.Binding;
            msgBindingIndication.Class = StunClass.Inidication;

            /// Add fingerprint
            ///
            int nLengthWithoutFingerPrint = msgBindingIndication.Bytes.Length;
            FingerPrintAttribute fattr = new FingerPrintAttribute();
            msgBindingIndication.AddAttribute(fattr);
            fattr.ComputeCRC(msgBindingIndication, nLengthWithoutFingerPrint);
            stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgBindingIndication, 0);
        }
Exemplo n.º 6
0
        public void PerformOutgoingSTUNCheck(RTPStream stream, string strUsername, string strPassword)
        {
            STUN2Message msgRequest = new STUN2Message();
            msgRequest.Method = StunMethod.Binding;
            msgRequest.Class = StunClass.Request;

            //MappedAddressAttribute mattr = new MappedAddressAttribute();
            //mattr.IPAddress = LocalCandidate.IPEndPoint.Address;
            //mattr.Port = (ushort)LocalCandidate.IPEndPoint.Port;

            //msgRequest.AddAttribute(mattr);

            PriorityAttribute pattr = new PriorityAttribute();
            pattr.Priority = (int) CalculatePriority(110, 10, this.LocalCandidate.component); ///Peer reflexive, not sure of the purpose of this yet  //this.Priority;
            msgRequest.AddAttribute(pattr);

            if (IsControlling == true)
            {
                IceControllingAttribute cattr = new IceControllingAttribute();
                msgRequest.AddAttribute(cattr);
            }
            else
            {
                IceControlledAttribute cattr = new IceControlledAttribute();
                msgRequest.AddAttribute(cattr);
            }

            if (strUsername != null)
            {
                UserNameAttribute unameattr = new UserNameAttribute();
                unameattr.UserName = strUsername;
                msgRequest.AddAttribute(unameattr);
            }

            /// Add message integrity, computes over all the items currently added
            ///
            int nLengthWithoutMessageIntegrity = msgRequest.Bytes.Length;
            MessageIntegrityAttribute mac = new MessageIntegrityAttribute();
            msgRequest.AddAttribute(mac);
            mac.ComputeHMACShortTermCredentials(msgRequest, nLengthWithoutMessageIntegrity, strPassword);

            /// Add fingerprint
            ///
            int nLengthWithoutFingerPrint = msgRequest.Bytes.Length;
            FingerPrintAttribute fattr = new FingerPrintAttribute();
            msgRequest.AddAttribute(fattr);
            fattr.ComputeCRC(msgRequest, nLengthWithoutFingerPrint);

            foreach (int nNextTimeout in Timeouts)
            {
                STUNMessage ResponseMessage = stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgRequest, nNextTimeout);

                ResponseEndpoint = null;
                if (ResponseMessage != null)
                {
                    foreach (STUNAttributeContainer cont in ResponseMessage.Attributes)
                    {
                        if (cont.ParsedAttribute.Type == StunAttributeType.MappedAddress)
                        {

                            MappedAddressAttribute attrib = cont.ParsedAttribute as MappedAddressAttribute;
                            ResponseEndpoint = new IPEndPoint(attrib.IPAddress, attrib.Port);
                        }
                    }
                    System.Diagnostics.Debug.WriteLine("STUN check for remote candidate {0} succeeded", this.RemoteCandidate.IPEndPoint);
                    this.CandidatePairState = RTP.CandidatePairState.Succeeded;
                    break;
                }
                else
                {
                    System.Diagnostics.Debug.WriteLine("STUN check for remote candidate {0} failed", this.RemoteCandidate.IPEndPoint);
                    this.CandidatePairState = RTP.CandidatePairState.Failed;
                }
            }
        }