/// <summary>
/// The event handler for responses to the authenticated register request.
/// </summary>
private void AuthResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterInProgress, "Server auth response " + sipResponse.Status + " received for " + m_sipAccountAOR.ToString() + ".", m_owner));
if (sipResponse.Status == SIPResponseStatusCodesEnum.Ok)
{
if (m_expiry > 0)
{
m_isRegistered = true;
m_expiry = GetUpdatedExpiry(sipResponse);
RegistrationSuccessful?.Invoke(m_sipAccountAOR);
}
else
{
m_isRegistered = false;
RegistrationRemoved?.Invoke(m_sipAccountAOR);
}
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.IntervalTooBrief && m_expiry != 0)
{
m_expiry = GetUpdatedExpiryForIntervalTooBrief(sipResponse);
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterInProgress, "Registration for " + m_sipAccountAOR.ToString() + " had a too short expiry, updated to +" + m_expiry + " and trying again.", m_owner));
SendInitialRegister();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.Forbidden || sipResponse.Status == SIPResponseStatusCodesEnum.NotFound || sipResponse.Status == SIPResponseStatusCodesEnum.PaymentRequired)
{
// SIP account does not appear to exist.
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ", no further registration attempts will be made.", m_owner));
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_exit = true;
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.ProxyAuthenticationRequired || sipResponse.Status == SIPResponseStatusCodesEnum.Unauthorised)
{
// SIP account credentials failed.
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ", no further registration attempts will be made.", m_owner));
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_exit = true;
m_waitForRegistrationMRE.Set();
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ".", m_owner));
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration failed with " + sipResponse.Status + ".");
m_waitForRegistrationMRE.Set();
}
}
catch (Exception excp)
{
logger.LogError("Exception SIPRegistrationUserAgent AuthResponseReceived. " + excp.Message);
}
}
private void RegistrationTimedOut(SIPTransaction sipTransaction)
{
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR,
"Registration transaction to " + m_registrarHost + " for " + m_sipAccountAOR.ToString() +
" timed out.");
m_waitForRegistrationMRE.Set();
}
private void SendInitialRegister()
{
try
{
if (m_attempts >= m_maxRegisterAttempts)
{
logger.LogWarning("Registration to " + m_sipAccountAOR.ToString() + " reached the maximum number of allowed attempts without a failure condition.");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration reached the maximum number of allowed attempts.");
m_waitForRegistrationMRE.Set();
}
else
{
m_attempts++;
SIPEndPoint registrarSIPEndPoint = m_outboundProxy;
if (registrarSIPEndPoint == null)
{
//SIPDNSLookupResult lookupResult = m_sipTransport.GetHostEndPoint(m_registrarHost, false);
SIPURI uri = SIPURI.ParseSIPURIRelaxed(m_registrarHost);
var lookupResult = m_sipTransport.ResolveSIPUriAsync(uri).ConfigureAwait(false).GetAwaiter().GetResult();
if (lookupResult == null)
{
logger.LogWarning("Could not resolve " + m_registrarHost + ".");
}
else
{
registrarSIPEndPoint = lookupResult;
}
}
if (registrarSIPEndPoint == null)
{
logger.LogWarning("SIPRegistrationAgent could not resolve " + m_registrarHost + ".");
RegistrationFailed?.Invoke(m_sipAccountAOR, "Could not resolve " + m_registrarHost + ".");
}
else
{
logger.LogDebug("Initiating registration to " + m_registrarHost + " at " + registrarSIPEndPoint.ToString() + " for " + m_sipAccountAOR.ToString() + ".");
SIPRequest regRequest = GetRegistrationRequest();
SIPNonInviteTransaction regTransaction = new SIPNonInviteTransaction(m_sipTransport, regRequest, registrarSIPEndPoint);
// These handlers need to be on their own threads to take the processing off the SIP transport layer.
regTransaction.NonInviteTransactionFinalResponseReceived += (lep, rep, tn, rsp) => { ThreadPool.QueueUserWorkItem(delegate { ServerResponseReceived(lep, rep, tn, rsp); }); return(Task.FromResult(SocketError.Success)); };
regTransaction.NonInviteTransactionTimedOut += (tn) => { ThreadPool.QueueUserWorkItem(delegate { RegistrationTimedOut(tn); }); };
m_sipTransport.SendTransaction(regTransaction);
}
}
}
catch (Exception excp)
{
logger.LogError("Exception SendInitialRegister to " + m_registrarHost + ". " + excp.Message);
RegistrationFailed?.Invoke(m_sipAccountAOR, "Exception SendInitialRegister to " + m_registrarHost + ". " + excp.Message);
}
}
private void SendInitialRegister()
{
try
{
if (m_attempts >= MAX_REGISTER_ATTEMPTS)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration to " + m_sipAccountAOR.ToString() + " reached the maximum number of allowed attempts without a failure condition.", m_owner));
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration reached the maximum number of allowed attempts.");
m_waitForRegistrationMRE.Set();
}
else
{
m_attempts++;
SIPEndPoint registrarSIPEndPoint = m_outboundProxy;
if (registrarSIPEndPoint == null)
{
SIPDNSLookupResult lookupResult = m_sipTransport.GetHostEndPoint(m_registrarHost, false);
if (lookupResult.LookupError != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Could not resolve " + m_registrarHost + ", " + lookupResult.LookupError, m_owner));
}
else
{
registrarSIPEndPoint = lookupResult.GetSIPEndPoint();
}
}
if (registrarSIPEndPoint == null)
{
logger.LogWarning("SIPRegistrationAgent could not resolve " + m_registrarHost + ".");
RegistrationFailed?.Invoke(m_sipAccountAOR, "Could not resolve " + m_registrarHost + ".");
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterInProgress, "Initiating registration to " + m_registrarHost + " at " + registrarSIPEndPoint.ToString() + " for " + m_sipAccountAOR.ToString() + ".", m_owner));
SIPRequest regRequest = GetRegistrationRequest(m_localEndPoint);
SIPNonInviteTransaction regTransaction = m_sipTransport.CreateNonInviteTransaction(regRequest, registrarSIPEndPoint, m_localEndPoint, m_outboundProxy);
// These handlers need to be on their own threads to take the processing off the SIP transport layer.
regTransaction.NonInviteTransactionFinalResponseReceived += (lep, rep, tn, rsp) => { ThreadPool.QueueUserWorkItem(delegate { ServerResponseReceived(lep, rep, tn, rsp); }); };
regTransaction.NonInviteTransactionTimedOut += (tn) => { ThreadPool.QueueUserWorkItem(delegate { RegistrationTimedOut(tn); }); };
m_sipTransport.SendSIPReliable(regTransaction);
}
}
}
catch (Exception excp)
{
logger.LogError("Exception SendInitialRegister to " + m_registrarHost + ". " + excp.Message);
RegistrationFailed?.Invoke(m_sipAccountAOR, "Exception SendInitialRegister to " + m_registrarHost + ". " + excp.Message);
}
}
private void SendInitialRegister()
{
try
{
if (m_attempts >= m_maxRegisterAttempts)
{
logger.LogWarning($"Registration to {m_sipAccountAOR} reached the maximum number of allowed attempts without a failure condition.");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration reached the maximum number of allowed attempts.");
m_waitForRegistrationMRE.Set();
}
else
{
m_attempts++;
SIPEndPoint registrarSIPEndPoint = m_outboundProxy;
if (registrarSIPEndPoint == null)
{
SIPURI uri = SIPURI.ParseSIPURIRelaxed(m_registrarHost);
var lookupResult = m_sipTransport.ResolveSIPUriAsync(uri).Result;
if (lookupResult == null || lookupResult == SIPEndPoint.Empty)
{
logger.LogWarning("Could not resolve " + m_registrarHost + " when sending initial registration request.");
}
else
{
registrarSIPEndPoint = lookupResult;
}
}
if (registrarSIPEndPoint == null)
{
logger.LogWarning("SIPRegistrationAgent could not resolve " + m_registrarHost + ".");
RegistrationFailed?.Invoke(m_sipAccountAOR, "Could not resolve " + m_registrarHost + ".");
}
else
{
logger.LogDebug("Initiating registration to " + m_registrarHost + " at " + registrarSIPEndPoint.ToString() + " for " + m_sipAccountAOR.ToString() + ".");
SIPRequest regRequest = GetRegistrationRequest();
SIPNonInviteTransaction regTransaction = new SIPNonInviteTransaction(m_sipTransport, regRequest, registrarSIPEndPoint);
regTransaction.NonInviteTransactionFinalResponseReceived += (lep, rep, tn, rsp) => { ServerResponseReceived(lep, rep, tn, rsp); return(Task.FromResult(SocketError.Success)); };
regTransaction.NonInviteTransactionTimedOut += RegistrationTimedOut;
m_sipTransport.SendTransaction(regTransaction);
}
}
}
catch (Exception excp)
{
logger.LogError("Exception SendInitialRegister to " + m_registrarHost + ". " + excp.Message);
RegistrationFailed?.Invoke(m_sipAccountAOR, "Exception SendInitialRegister to " + m_registrarHost + ". " + excp.Message);
}
}
/// <summary>
/// The event handler for responses to the initial register request.
/// </summary>
private void ServerResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterInProgress, "Server response " + sipResponse.Status + " received for " + m_sipAccountAOR.ToString() + ".", m_owner));
if (sipResponse.Status == SIPResponseStatusCodesEnum.ProxyAuthenticationRequired || sipResponse.Status == SIPResponseStatusCodesEnum.Unauthorised)
{
if (sipResponse.Header.AuthenticationHeader != null)
{
if (m_attempts >= MAX_REGISTER_ATTEMPTS)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration to " + m_sipAccountAOR.ToString() + " reached the maximum number of allowed attempts without a failure condition.", m_owner));
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration reached the maximum number of allowed attempts.");
m_waitForRegistrationMRE.Set();
}
else
{
m_attempts++;
SIPRequest authenticatedRequest = GetAuthenticatedRegistrationRequest(sipTransaction.TransactionRequest, sipResponse);
SIPNonInviteTransaction regAuthTransaction = m_sipTransport.CreateNonInviteTransaction(authenticatedRequest, sipTransaction.RemoteEndPoint, localSIPEndPoint, m_outboundProxy);
regAuthTransaction.NonInviteTransactionFinalResponseReceived += (lep, rep, tn, rsp) => { ThreadPool.QueueUserWorkItem(delegate { AuthResponseReceived(lep, rep, tn, rsp); }); };
regAuthTransaction.NonInviteTransactionTimedOut += (tn) => { ThreadPool.QueueUserWorkItem(delegate { RegistrationTimedOut(tn); }); };
m_sipTransport.SendSIPReliable(regAuthTransaction);
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration failed with " + sipResponse.Status + " but no authentication header was supplied for " + m_sipAccountAOR.ToString() + ".", m_owner));
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration failed with " + sipResponse.Status + " but no authentication header was supplied.");
m_waitForRegistrationMRE.Set();
}
}
else
{
if (sipResponse.Status == SIPResponseStatusCodesEnum.Ok)
{
if (m_expiry > 0)
{
m_isRegistered = true;
m_expiry = GetUpdatedExpiry(sipResponse);
RegistrationSuccessful?.Invoke(m_sipAccountAOR);
}
else
{
m_isRegistered = false;
RegistrationRemoved?.Invoke(m_sipAccountAOR);
}
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.Forbidden || sipResponse.Status == SIPResponseStatusCodesEnum.NotFound)
{
// SIP account does not appear to exist.
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ", no further registration attempts will be made.", m_owner));
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_exit = true;
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.IntervalTooBrief && m_expiry != 0)
{
m_expiry = GetUpdatedExpiryForIntervalTooBrief(sipResponse);
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterInProgress, "Registration for " + m_sipAccountAOR.ToString() + " had a too short expiry, updated to +" + m_expiry + " and trying again.", m_owner));
SendInitialRegister();
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.ContactRegisterFailed, "Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ".", m_owner));
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration failed with " + sipResponse.Status + ".");
m_waitForRegistrationMRE.Set();
}
}
}
catch (Exception excp)
{
logger.LogError("Exception SIPRegistrationUserAgent ServerResponseReceived (" + remoteEndPoint + "). " + excp.Message);
}
}
/// <summary>
/// The event handler for responses to the initial register request.
/// </summary>
private void ServerResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
logger.LogDebug("Server response " + sipResponse.Status + " received for " + m_sipAccountAOR.ToString() + ".");
if (sipResponse.Status == SIPResponseStatusCodesEnum.ProxyAuthenticationRequired || sipResponse.Status == SIPResponseStatusCodesEnum.Unauthorised)
{
if (sipResponse.Header.AuthenticationHeader != null)
{
if (m_attempts >= m_maxRegisterAttempts)
{
logger.LogDebug("Registration to " + m_sipAccountAOR.ToString() + " reached the maximum number of allowed attempts without a failure condition.");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration reached the maximum number of allowed attempts.");
m_waitForRegistrationMRE.Set();
}
else
{
m_attempts++;
SIPRequest authenticatedRequest = GetAuthenticatedRegistrationRequest(sipTransaction.TransactionRequest, sipResponse);
SIPEndPoint registrarSIPEndPoint = m_outboundProxy;
if (registrarSIPEndPoint == null)
{
//SIPDNSLookupResult lookupResult = m_sipTransport.GetHostEndPoint(m_registrarHost, false);
SIPURI uri = SIPURI.ParseSIPURIRelaxed(m_registrarHost);
var lookupResult = m_sipTransport.ResolveSIPUriAsync(uri).ConfigureAwait(false).GetAwaiter().GetResult();
if (lookupResult == null)
{
logger.LogWarning("Could not resolve " + m_registrarHost + ".");
}
else
{
registrarSIPEndPoint = lookupResult;
}
}
if (registrarSIPEndPoint == null)
{
logger.LogWarning("SIPRegistrationAgent could not resolve " + m_registrarHost + ".");
RegistrationFailed?.Invoke(m_sipAccountAOR, "Could not resolve " + m_registrarHost + ".");
}
else
{
SIPNonInviteTransaction regAuthTransaction = new SIPNonInviteTransaction(m_sipTransport, authenticatedRequest, registrarSIPEndPoint);
regAuthTransaction.NonInviteTransactionFinalResponseReceived += (lep, rep, tn, rsp) => { ThreadPool.QueueUserWorkItem(delegate { AuthResponseReceived(lep, rep, tn, rsp); }); return(Task.FromResult(SocketError.Success)); };
regAuthTransaction.NonInviteTransactionTimedOut += (tn) => { ThreadPool.QueueUserWorkItem(delegate { RegistrationTimedOut(tn); }); };
m_sipTransport.SendTransaction(regAuthTransaction);
}
}
}
else
{
logger.LogWarning("Registration failed with " + sipResponse.Status + " but no authentication header was supplied for " + m_sipAccountAOR.ToString() + ".");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration failed with " + sipResponse.Status + " but no authentication header was supplied.");
m_waitForRegistrationMRE.Set();
}
}
else
{
if (sipResponse.Status == SIPResponseStatusCodesEnum.Ok)
{
if (m_expiry > 0)
{
m_isRegistered = true;
m_expiry = GetUpdatedExpiry(sipResponse);
RegistrationSuccessful?.Invoke(m_sipAccountAOR);
}
else
{
m_isRegistered = false;
RegistrationRemoved?.Invoke(m_sipAccountAOR);
}
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.Forbidden || sipResponse.Status == SIPResponseStatusCodesEnum.NotFound)
{
// SIP account does not appear to exist.
logger.LogWarning("Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ", no further registration attempts will be made.");
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_exit = true;
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.IntervalTooBrief && m_expiry != 0)
{
m_expiry = GetUpdatedExpiryForIntervalTooBrief(sipResponse);
logger.LogWarning("Registration for " + m_sipAccountAOR.ToString() + " had a too short expiry, updated to +" + m_expiry + " and trying again.");
SendInitialRegister();
}
else
{
logger.LogWarning("Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ".");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration failed with " + sipResponse.Status + ".");
m_waitForRegistrationMRE.Set();
}
}
}
catch (Exception excp)
{
logger.LogError("Exception SIPRegistrationUserAgent ServerResponseReceived (" + remoteEndPoint + "). " + excp.Message);
}
}
/// <summary>
/// The event handler for responses to the authenticated register request.
/// </summary>
private void AuthResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
logger.LogDebug($"Server auth response {sipResponse.Status} received for {m_sipAccountAOR}.");
if (sipResponse.Status == SIPResponseStatusCodesEnum.Ok)
{
if (m_expiry > 0)
{
m_isRegistered = true;
m_expiry = GetUpdatedExpiry(sipResponse);
RegistrationSuccessful?.Invoke(m_sipAccountAOR);
}
else
{
m_isRegistered = false;
RegistrationRemoved?.Invoke(m_sipAccountAOR);
}
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.IntervalTooBrief && m_expiry != 0)
{
m_expiry = GetUpdatedExpiryForIntervalTooBrief(sipResponse);
logger.LogDebug("Registration for " + m_sipAccountAOR.ToString() + " had a too short expiry, updated to +" + m_expiry + " and trying again.");
SendInitialRegister();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.Forbidden || sipResponse.Status == SIPResponseStatusCodesEnum.NotFound || sipResponse.Status == SIPResponseStatusCodesEnum.PaymentRequired)
{
// SIP account does not appear to exist.
m_exit = m_exitOnUnequivocalFailure;
logger.LogWarning($"Registration unequivocal failure with {sipResponse.Status} for {m_sipAccountAOR}{(m_exit ? " ,no further registration attempts will be made" : "")}.");
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.ProxyAuthenticationRequired || sipResponse.Status == SIPResponseStatusCodesEnum.Unauthorised)
{
// SIP account credentials failed.
m_exit = m_exitOnUnequivocalFailure;
logger.LogWarning($"Registration unequivocal failure with {sipResponse.Status} for {m_sipAccountAOR}{(m_exit ? " ,no further registration attempts will be made" : "")}.");
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_waitForRegistrationMRE.Set();
}
else
{
logger.LogWarning("Registration failed with " + sipResponse.Status + " for " + m_sipAccountAOR.ToString() + ".");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration failed with " + sipResponse.Status + ".");
m_waitForRegistrationMRE.Set();
}
}
catch (Exception excp)
{
logger.LogError("Exception SIPRegistrationUserAgent AuthResponseReceived. " + excp.Message);
}
}
/// <summary>
/// The event handler for responses to the initial register request.
/// </summary>
private void ServerResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
logger.LogDebug($"Server response {sipResponse.Status} received for {m_sipAccountAOR}.");
if (sipResponse.Status == SIPResponseStatusCodesEnum.ProxyAuthenticationRequired || sipResponse.Status == SIPResponseStatusCodesEnum.Unauthorised)
{
if (sipResponse.Header.HasAuthenticationHeader)
{
if (m_attempts >= m_maxRegisterAttempts)
{
logger.LogDebug("Registration to " + m_sipAccountAOR.ToString() + " reached the maximum number of allowed attempts without a failure condition.");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, "Registration reached the maximum number of allowed attempts.");
m_waitForRegistrationMRE.Set();
}
else
{
m_attempts++;
string username = (m_authUsername != null) ? m_authUsername : m_sipAccountAOR.User;
var authenticatedRequest = sipTransaction.TransactionRequest.DuplicateAndAuthenticate(
sipResponse.Header.AuthenticationHeaders, username, m_password);
SIPEndPoint registrarSIPEndPoint = m_outboundProxy;
if (registrarSIPEndPoint == null)
{
SIPURI uri = SIPURI.ParseSIPURIRelaxed(m_registrarHost);
var lookupResult = m_sipTransport.ResolveSIPUriAsync(uri).Result;
if (lookupResult == null)
{
logger.LogWarning("Could not resolve " + m_registrarHost + ".");
}
else
{
registrarSIPEndPoint = lookupResult;
}
}
if (registrarSIPEndPoint == null)
{
logger.LogWarning("SIPRegistrationAgent could not resolve " + m_registrarHost + ".");
RegistrationFailed?.Invoke(m_sipAccountAOR, "Could not resolve " + m_registrarHost + ".");
}
else
{
SIPNonInviteTransaction regAuthTransaction = new SIPNonInviteTransaction(m_sipTransport, authenticatedRequest, registrarSIPEndPoint);
regAuthTransaction.NonInviteTransactionFinalResponseReceived += (lep, rep, tn, rsp) =>
{
AuthResponseReceived(lep, rep, tn, rsp);
return(Task.FromResult(SocketError.Success));
};
regAuthTransaction.NonInviteTransactionFailed += RegistrationTransactionFailed;
regAuthTransaction.SendRequest();
}
}
}
else
{
logger.LogWarning($"Registration failed with {sipResponse.Status} but no authentication header was supplied for {m_sipAccountAOR}.");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, $"Registration failed with {sipResponse.Status} but no authentication header was supplied.");
m_waitForRegistrationMRE.Set();
}
}
else
{
if (sipResponse.Status == SIPResponseStatusCodesEnum.Ok)
{
if (m_expiry > 0)
{
m_isRegistered = true;
m_expiry = GetUpdatedExpiry(sipResponse);
RegistrationSuccessful?.Invoke(m_sipAccountAOR);
}
else
{
m_isRegistered = false;
RegistrationRemoved?.Invoke(m_sipAccountAOR);
}
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.Forbidden || sipResponse.Status == SIPResponseStatusCodesEnum.NotFound)
{
// SIP account does not appear to exist.
m_exit = m_exitOnUnequivocalFailure;
logger.LogWarning($"Registration unequivocal failure with {sipResponse.Status} for {m_sipAccountAOR}{(m_exit ? ", no further registration attempts will be made" : "")}.");
string reasonPhrase = (sipResponse.ReasonPhrase.IsNullOrBlank()) ? sipResponse.Status.ToString() : sipResponse.ReasonPhrase;
RegistrationFailed?.Invoke(m_sipAccountAOR, "Registration failed with " + (int)sipResponse.Status + " " + reasonPhrase + ".");
m_waitForRegistrationMRE.Set();
}
else if (sipResponse.Status == SIPResponseStatusCodesEnum.IntervalTooBrief && m_expiry != 0)
{
m_expiry = GetUpdatedExpiryForIntervalTooBrief(sipResponse);
logger.LogWarning("Registration for " + m_sipAccountAOR.ToString() + " had a too short expiry, updated to +" + m_expiry + " and trying again.");
SendInitialRegister();
}
else
{
logger.LogWarning($"Registration failed with {sipResponse.Status} for {m_sipAccountAOR}.");
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, $"Registration failed with {sipResponse.Status}.");
m_waitForRegistrationMRE.Set();
}
}
}
catch (Exception excp)
{
logger.LogError($"Exception SIPRegistrationUserAgent ServerResponseReceived ({remoteEndPoint}). {excp}");
}
}
private void RegistrationTransactionFailed(SIPTransaction sipTransaction, SocketError failureReason)
{
m_isRegistered = false;
RegistrationTemporaryFailure?.Invoke(m_sipAccountAOR, $"Registration transaction to {m_registrarHost} for {m_sipAccountAOR} failed with {failureReason}.");
m_waitForRegistrationMRE.Set();
}