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; } } }
/// <summary> /// Start the thread that sends STUN requests periodically. Must clients will still work without this, but google talk will kill incoming audio if /// stun binding requests aren't sent periodically. /// (Google clients appear to send these every 500 ms, but we'll do every 3 s) /// </summary> /// <param name="stream"></param> /// <param name="bGoogle"></param> public void StartIndicationThread(RTPStream stream, bool bGoogle) { if (m_bThreadRunning == true) { return; } m_bThreadRunning = true; m_bGoogle = bGoogle; RTPStream = stream; ThreadIndication = new System.Threading.Thread(new System.Threading.ThreadStart(IndicationThread)); ThreadIndication.IsBackground = true; #if !WINDOWS_PHONE ThreadIndication.Priority = System.Threading.ThreadPriority.BelowNormal; #endif ThreadIndication.Start(); }
public void SendIndicationGoogle(RTPStream stream, string strUsername) { /// Google talk appears to send a full stun binding request every 500 ms instead of a binding indication STUN2Message msgRequest = new STUN2Message(); msgRequest.Method = StunMethod.Binding; msgRequest.Class = StunClass.Request; if (strUsername != null) { UserNameAttribute unameattr = new UserNameAttribute(); unameattr.UserName = strUsername; msgRequest.AddAttribute(unameattr); } STUNMessage ResponseMessage = stream.SendRecvSTUN(this.RemoteCandidate.IPEndPoint, msgRequest, 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); }
public void PerformOutgoingSTUNCheckGoogle(RTPStream stream, string strUsername, string strPassword) { STUN2Message msgRequest = new STUN2Message(); msgRequest.Method = StunMethod.Binding; msgRequest.Class = StunClass.Request; if (strUsername != null) { UserNameAttribute unameattr = new UserNameAttribute(); unameattr.UserName = strUsername; msgRequest.AddAttribute(unameattr); } 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); } } this.CandidatePairState = RTP.CandidatePairState.Succeeded; break; } else { this.CandidatePairState = RTP.CandidatePairState.Failed; } } }
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; } }
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; } } }
/// <summary> /// Start the thread that sends STUN requests periodically. Must clients will still work without this, but google talk will kill incoming audio if /// stun binding requests aren't sent periodically. /// (Google clients appear to send these every 500 ms, but we'll do every 3 s) /// </summary> /// <param name="stream"></param> /// <param name="bGoogle"></param> public void StartIndicationThread(RTPStream stream, bool bGoogle) { if (m_bThreadRunning == true) return; m_bThreadRunning = true; m_bGoogle = bGoogle; RTPStream = stream; ThreadIndication = new System.Threading.Thread(new System.Threading.ThreadStart(IndicationThread)); ThreadIndication.IsBackground = true; #if !WINDOWS_PHONE ThreadIndication.Priority = System.Threading.ThreadPriority.BelowNormal; #endif ThreadIndication.Start(); }
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; } } }