private void UACInviteTransaction_TransactionFinalResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
// BranchId for 2xx responses needs to be a new one, non-2xx final responses use same one as original request.
if (sipResponse.StatusCode >= 200 && sipResponse.StatusCode < 299)
{
if (_sendOkAckManually == false)
{
Send2xxAckRequest(null, null);
}
}
else
{
// ACK for non 2xx response is part of the INVITE transaction and gets routed to the same endpoint as the INVITE.
var ackRequest = GetInTransactionACKRequest(sipResponse, m_transactionRequest.URI, LocalSIPEndPoint);
base.SendRequest(RemoteEndPoint, ackRequest);
}
UACInviteTransactionFinalResponseReceived?.Invoke(localSIPEndPoint, remoteEndPoint, sipTransaction, sipResponse);
if (CDR != null)
{
SIPEndPoint localEP = SIPEndPoint.TryParse(sipResponse.Header.ProxyReceivedOn) ?? localSIPEndPoint;
SIPEndPoint remoteEP = SIPEndPoint.TryParse(sipResponse.Header.ProxyReceivedFrom) ?? remoteEndPoint;
CDR.Answered(sipResponse.StatusCode, sipResponse.Status, sipResponse.ReasonPhrase, localEP, remoteEP);
}
}
catch (Exception excp)
{
logger.Error("Exception UACInviteTransaction_TransactionFinalResponseReceived. " + excp.Message);
}
}
/// <param name="sendOkAckManually">If set an ACK request for the 2xx response will NOT be sent and it will be up to the application to explicitly call the SendACK request.</param>
internal UACInviteTransaction(SIPTransport sipTransport, SIPRequest sipRequest, SIPEndPoint dstEndPoint, SIPEndPoint localSIPEndPoint, SIPEndPoint outboundProxy, bool sendOkAckManually = false)
: base(sipTransport, sipRequest, dstEndPoint, localSIPEndPoint, outboundProxy)
{
TransactionType = SIPTransactionTypesEnum.Invite;
m_localTag = sipRequest.Header.From.FromTag;
SIPEndPoint localEP = SIPEndPoint.TryParse(sipRequest.Header.ProxySendFrom) ?? localSIPEndPoint;
CDR = new SIPCDR(SIPCallDirection.Out, sipRequest.URI, sipRequest.Header.From, sipRequest.Header.CallId, localEP, dstEndPoint);
_sendOkAckManually = sendOkAckManually;
TransactionFinalResponseReceived += UACInviteTransaction_TransactionFinalResponseReceived;
TransactionInformationResponseReceived += UACInviteTransaction_TransactionInformationResponseReceived;
TransactionTimedOut += UACInviteTransaction_TransactionTimedOut;
TransactionRequestReceived += UACInviteTransaction_TransactionRequestReceived;
TransactionRemoved += UACInviteTransaction_TransactionRemoved;
}
private void UACInviteTransaction_TransactionInformationResponseReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
{
try
{
UACInviteTransactionInformationResponseReceived?.Invoke(localSIPEndPoint, remoteEndPoint, sipTransaction, sipResponse);
if (CDR != null)
{
SIPEndPoint localEP = SIPEndPoint.TryParse(sipResponse.Header.ProxyReceivedOn) ?? localSIPEndPoint;
SIPEndPoint remoteEP = SIPEndPoint.TryParse(sipResponse.Header.ProxyReceivedFrom) ?? remoteEndPoint;
CDR.Progress(sipResponse.Status, sipResponse.ReasonPhrase, localEP, remoteEP);
}
}
catch (Exception excp)
{
logger.Error("Exception UACInviteTransaction_TransactionInformationResponseReceived. " + excp.Message);
}
}
public UASInviteTransaction(
SIPTransport sipTransport,
SIPRequest sipRequest,
SIPEndPoint dstEndPoint,
SIPEndPoint localSIPEndPoint,
SIPEndPoint outboundProxy,
IPAddress contactIPAddress,
bool noCDR = false)
: base(sipTransport, sipRequest, dstEndPoint, localSIPEndPoint, outboundProxy)
{
TransactionType = SIPTransactionTypesEnum.Invite;
m_remoteTag = sipRequest.Header.From.FromTag;
m_contactIPAddress = contactIPAddress;
if (sipRequest.Header.To.ToTag == null)
{
// This UAS needs to set the To Tag.
m_localTag = CallProperties.CreateNewTag();
}
else
{
// This is a re-INVITE.
m_localTag = sipRequest.Header.To.ToTag;
}
//logger.Debug("New UASTransaction (" + TransactionId + ") for " + TransactionRequest.URI.ToString() + " to " + RemoteEndPoint + ".");
SIPEndPoint localEP = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedOn) ?? localSIPEndPoint;
SIPEndPoint remoteEP = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedFrom) ?? dstEndPoint;
if (!noCDR)
{
CDR = new SIPCDR(SIPCallDirection.In, sipRequest.URI, sipRequest.Header.From, sipRequest.Header.CallId,
localEP, remoteEP);
}
//UpdateTransactionState(SIPTransactionStatesEnum.Proceeding);
TransactionRequestReceived += UASInviteTransaction_TransactionRequestReceived;
TransactionInformationResponseReceived += UASInviteTransaction_TransactionResponseReceived;
TransactionFinalResponseReceived += UASInviteTransaction_TransactionResponseReceived;
TransactionTimedOut += UASInviteTransaction_TransactionTimedOut;
TransactionRemoved += UASInviteTransaction_TransactionRemoved;
}
private RegisterResultEnum Register(SIPTransaction registerTransaction)
{
try
{
SIPRequest sipRequest = registerTransaction.TransactionRequest;
SIPURI registerURI = sipRequest.URI;
SIPToHeader toHeader = sipRequest.Header.To;
string toUser = toHeader.ToURI.User;
string canonicalDomain = toHeader.ToURI.Host;
int requestedExpiry = GetRequestedExpiry(sipRequest);
if (canonicalDomain == null)
{
SIPResponse noDomainResponse = GetErrorResponse(sipRequest, SIPResponseStatusCodesEnum.Forbidden,
"Domain not serviced");
registerTransaction.SendFinalResponse(noDomainResponse);
return(RegisterResultEnum.DomainNotServiced);
}
SIPAccount sipAccount = new SIPAccount
{
Id = Guid.NewGuid(),
Owner = "admin",
SIPUsername = toUser,
SIPDomain = canonicalDomain
};
SIPRequestAuthenticationResult authenticationResult =
_sipRequestAuthenticator_External?.Invoke(registerTransaction.LocalSIPEndPoint,
registerTransaction.RemoteEndPoint, sipRequest, sipAccount);
if (!_needAuthentication)
{
SIPResponse okRes = GetOkResponse(sipRequest);
registerTransaction.SendFinalResponse(okRes);
if (requestedExpiry > 0)
{
CacheDeviceItem(sipRequest);
RegisterReceived?.Invoke(sipRequest, _localSipAccount);
}
if (requestedExpiry == 0)
{
RemoveDeviceItem(sipRequest);
UnRegisterReceived?.Invoke(sipRequest, _localSipAccount);
}
return(RegisterResultEnum.AuthenticationRequired);
}
if (!authenticationResult.Authenticated)
{
// 401 Response with a fresh nonce needs to be sent.
SIPResponse authReqdResponse =
SIPTransport.GetResponse(sipRequest, authenticationResult.ErrorResponse, null);
authReqdResponse.Header.AuthenticationHeader = authenticationResult.AuthenticationRequiredHeader;
registerTransaction.SendFinalResponse(authReqdResponse);
if (authenticationResult.ErrorResponse == SIPResponseStatusCodesEnum.Forbidden)
{
return(RegisterResultEnum.Forbidden);
}
else
{
return(RegisterResultEnum.AuthenticationRequired);
}
}
else
{
if (sipRequest.Header.Contact == null || sipRequest.Header.Contact.Count == 0)
{
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendFinalResponse(okResponse);
if (requestedExpiry > 0)
{
CacheDeviceItem(sipRequest);
RegisterReceived?.Invoke(sipRequest, _localSipAccount);
}
if (requestedExpiry == 0)
{
RemoveDeviceItem(sipRequest);
UnRegisterReceived?.Invoke(sipRequest, _localSipAccount);
}
}
else
{
SIPEndPoint uacRemoteEndPoint = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedFrom) ??
registerTransaction.RemoteEndPoint;
SIPEndPoint proxySIPEndPoint = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedOn);
SIPEndPoint registrarEndPoint = registerTransaction.LocalSIPEndPoint;
SIPResponseStatusCodesEnum updateResult = SIPResponseStatusCodesEnum.Ok;
DateTime startTime = DateTime.Now;
TimeSpan duration = DateTime.Now.Subtract(startTime);
if (updateResult == SIPResponseStatusCodesEnum.Ok)
{
string proxySocketStr = (proxySIPEndPoint != null)
? " (proxy=" + proxySIPEndPoint.ToString() + ")"
: null;
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendFinalResponse(okResponse);
if (requestedExpiry > 0)
{
CacheDeviceItem(sipRequest);
RegisterReceived?.Invoke(sipRequest, _localSipAccount);
}
if (requestedExpiry == 0)
{
RemoveDeviceItem(sipRequest);
UnRegisterReceived?.Invoke(sipRequest, _localSipAccount);
}
}
else
{
sipRequest.Header.Contact[0].Expires = m_minimumBindingExpiry;
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendFinalResponse(okResponse);
}
}
return(RegisterResultEnum.Authenticated);
}
}
catch (Exception excp)
{
string regErrorMessage = "Exception registrarcore registering. ->" + excp.Message + "->" +
registerTransaction.TransactionRequest.ToString();
Logger.Logger.Error(regErrorMessage);
try
{
SIPResponse errorResponse = GetErrorResponse(registerTransaction.TransactionRequest,
SIPResponseStatusCodesEnum.InternalServerError, null);
registerTransaction.SendFinalResponse(errorResponse);
}
catch
{
}
return(RegisterResultEnum.Error);
}
}
private RegisterResultEnum Register(SIPNonInviteTransaction registerTransaction)
{
try
{
SIPRequest sipRequest = registerTransaction.TransactionRequest;
SIPURI registerURI = sipRequest.URI;
SIPToHeader toHeader = sipRequest.Header.To;
string toUser = toHeader.ToURI.User;
string canonicalDomain = m_sipDomainManager.GetCanonicalDomain(toHeader.ToURI.HostAddress);
int requestedExpiry = GetRequestedExpiry(sipRequest);
if (canonicalDomain == null)
{
Logger.LogWarning($"Register request for {toHeader.ToURI.HostAddress} rejected as no matching domain found.");
SIPResponse noDomainResponse = SIPResponse.GetResponse(sipRequest, SIPResponseStatusCodesEnum.Forbidden, "Domain not serviced");
registerTransaction.SendResponse(noDomainResponse);
return(RegisterResultEnum.DomainNotServiced);
}
else
{
SIPAccount sipAccount = m_sipAccountsDataLayer.GetSIPAccount(toUser, canonicalDomain).Result;
if (sipAccount == null)
{
Logger.LogWarning($"RegistrarCore SIP account {toUser}@{canonicalDomain} does not exist.");
SIPResponse forbiddenResponse = SIPResponse.GetResponse(sipRequest, SIPResponseStatusCodesEnum.Forbidden, null);
registerTransaction.SendResponse(forbiddenResponse);
return(RegisterResultEnum.Forbidden);
}
else
{
SIPRequestAuthenticationResult authenticationResult = SIPRequestAuthenticator.AuthenticateSIPRequest(
registerTransaction.TransactionRequest.LocalSIPEndPoint,
registerTransaction.TransactionRequest.RemoteSIPEndPoint,
sipRequest,
sipAccount.ToSIPAccountModel());
if (!authenticationResult.Authenticated)
{
// 401 Response with a fresh nonce needs to be sent.
SIPResponse authReqdResponse = SIPResponse.GetResponse(sipRequest, authenticationResult.ErrorResponse, null);
authReqdResponse.Header.AuthenticationHeader = authenticationResult.AuthenticationRequiredHeader;
registerTransaction.SendResponse(authReqdResponse);
if (authenticationResult.ErrorResponse == SIPResponseStatusCodesEnum.Forbidden)
{
Logger.LogWarning($"Forbidden {sipAccount.AOR} does not exist, {sipRequest.Header.ProxyReceivedFrom}, {sipRequest.Header.UserAgent}.");
return(RegisterResultEnum.Forbidden);
}
else
{
return(RegisterResultEnum.AuthenticationRequired);
}
}
else
{
if (sipRequest.Header.Contact == null || sipRequest.Header.Contact.Count == 0)
{
// No contacts header to update bindings with, return a list of the current bindings.
//List<SIPRegistrarBinding> bindings = m_registrarBindingsManager.GetBindings(sipAccount.ID);
List <SIPRegistrarBinding> bindings = m_sipRegistrarBindingDataLayer.GetForSIPAccount(new Guid(sipAccount.ID)).ToList();
//List<SIPContactHeader> contactsList = m_registrarBindingsManager.GetContactHeader(); // registration.GetContactHeader(true, null);
if (bindings != null)
{
sipRequest.Header.Contact = GetContactHeader(bindings);
}
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendResponse(okResponse);
Logger.LogDebug($"Empty registration request successful for {sipAccount.AOR} from {sipRequest.Header.ProxyReceivedFrom}.");
}
else
{
SIPEndPoint uacRemoteEndPoint = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedFrom) ?? registerTransaction.TransactionRequest.RemoteSIPEndPoint;
SIPEndPoint proxySIPEndPoint = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedOn);
SIPEndPoint registrarEndPoint = registerTransaction.TransactionRequest.LocalSIPEndPoint;
SIPResponseStatusCodesEnum updateResult = SIPResponseStatusCodesEnum.Ok;
string updateMessage = null;
DateTime startTime = DateTime.Now;
List <SIPRegistrarBinding> bindingsList = m_registrarBindingsManager.UpdateBindings(
sipAccount,
proxySIPEndPoint,
uacRemoteEndPoint,
registrarEndPoint,
sipRequest.Header.Contact,
sipRequest.Header.CallId,
sipRequest.Header.CSeq,
sipRequest.Header.Expires,
sipRequest.Header.UserAgent,
out updateResult,
out updateMessage);
TimeSpan duration = DateTime.Now.Subtract(startTime);
Logger.LogDebug($"Binding update time for {sipAccount.AOR} took {duration.TotalMilliseconds}ms.");
if (updateResult == SIPResponseStatusCodesEnum.Ok)
{
string proxySocketStr = (proxySIPEndPoint != null) ? " (proxy=" + proxySIPEndPoint.ToString() + ")" : null;
Logger.LogDebug($"Bindings for {sipAccount.AOR}:");
for (int i = 0; i < bindingsList.Count(); i++)
{
var binding = bindingsList[i];
Logger.LogDebug($" {i}: {binding.ContactURI}, expiry {binding.Expiry}s.");
}
sipRequest.Header.Contact = GetContactHeader(bindingsList);
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendResponse(okResponse);
}
else
{
// The binding update failed even though the REGISTER request was authorised. This is probably due to a
// temporary problem connecting to the bindings data store. Send Ok but set the binding expiry to the minimum so
// that the UA will try again as soon as possible.
Logger.LogError($"Registration request successful but binding update failed for {sipAccount.AOR} from {registerTransaction.TransactionRequest.RemoteSIPEndPoint}.");
sipRequest.Header.Contact[0].Expires = m_minimumBindingExpiry;
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendResponse(okResponse);
}
}
return(RegisterResultEnum.Authenticated);
}
}
}
}
catch (Exception excp)
{
string regErrorMessage = "Exception registrarcore registering. " + excp.Message + "\r\n" + registerTransaction.TransactionRequest.ToString();
Logger.LogError(regErrorMessage);
SIPResponse errorResponse = SIPResponse.GetResponse(registerTransaction.TransactionRequest, SIPResponseStatusCodesEnum.InternalServerError, null);
registerTransaction.SendResponse(errorResponse);
return(RegisterResultEnum.Error);
}
}
private RegisterResultEnum Register(SIPTransaction registerTransaction)
{
try
{
SIPRequest sipRequest = registerTransaction.TransactionRequest;
SIPURI registerURI = sipRequest.URI;
SIPToHeader toHeader = sipRequest.Header.To;
string toUser = toHeader.ToURI.User;
string canonicalDomain = (m_strictRealmHandling) ? GetCanonicalDomain_External(toHeader.ToURI.Host, true) : toHeader.ToURI.Host;
int requestedExpiry = GetRequestedExpiry(sipRequest);
if (canonicalDomain == null)
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Warn, "Register request for " + toHeader.ToURI.Host + " rejected as no matching domain found.", null));
SIPResponse noDomainResponse = GetErrorResponse(sipRequest, SIPResponseStatusCodesEnum.Forbidden, "Domain not serviced");
registerTransaction.SendFinalResponse(noDomainResponse);
return(RegisterResultEnum.DomainNotServiced);
}
SIPAccountAsset sipAccountAsset = GetSIPAccount_External(s => s.SIPUsername == toUser && s.SIPDomain == canonicalDomain);
SIPRequestAuthenticationResult authenticationResult = SIPRequestAuthenticator_External(registerTransaction.LocalSIPEndPoint, registerTransaction.RemoteEndPoint, sipRequest, sipAccountAsset.SIPAccount, FireProxyLogEvent);
if (!authenticationResult.Authenticated)
{
// 401 Response with a fresh nonce needs to be sent.
SIPResponse authReqdResponse = SIPTransport.GetResponse(sipRequest, authenticationResult.ErrorResponse, null);
authReqdResponse.Header.AuthenticationHeader = authenticationResult.AuthenticationRequiredHeader;
registerTransaction.SendFinalResponse(authReqdResponse);
if (authenticationResult.ErrorResponse == SIPResponseStatusCodesEnum.Forbidden)
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Warn, "Forbidden " + toUser + "@" + canonicalDomain + " does not exist, " + sipRequest.Header.ProxyReceivedFrom + ", " + sipRequest.Header.UserAgent + ".", null));
return(RegisterResultEnum.Forbidden);
}
else
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Registrar, "Authentication required for " + toUser + "@" + canonicalDomain + " from " + sipRequest.Header.ProxyReceivedFrom + ".", toUser));
return(RegisterResultEnum.AuthenticationRequired);
}
}
else
{
// Authenticated.
//if (!sipRequest.Header.UserAgent.IsNullOrBlank() && !m_switchboarduserAgentPrefix.IsNullOrBlank() && sipRequest.Header.UserAgent.StartsWith(m_switchboarduserAgentPrefix))
//{
// // Check that the switchboard user is authorised.
// var customer = CustomerPersistor_External.Get(x => x.CustomerUsername == sipAccount.Owner);
// if (!(customer.ServiceLevel == CustomerServiceLevels.Switchboard.ToString() || customer.ServiceLevel == CustomerServiceLevels.Gold.ToString()))
// {
// FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Warn, "Register request for switchboard from " + toHeader.ToURI.Host + " rejected as not correct service level.", sipAccount.Owner));
// SIPResponse payReqdResponse = GetErrorResponse(sipRequest, SIPResponseStatusCodesEnum.PaymentRequired, "You need to purchase a Switchboard service");
// registerTransaction.SendFinalResponse(payReqdResponse);
// return RegisterResultEnum.SwitchboardPaymentRequired;
// }
//}
if (sipRequest.Header.Contact == null || sipRequest.Header.Contact.Count == 0)
{
// No contacts header to update bindings with, return a list of the current bindings.
List <SIPRegistrarBinding> bindings = m_registrarBindingsManager.GetBindings(sipAccountAsset.Id);
//List<SIPContactHeader> contactsList = m_registrarBindingsManager.GetContactHeader(); // registration.GetContactHeader(true, null);
if (bindings != null)
{
sipRequest.Header.Contact = GetContactHeader(bindings);
}
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendFinalResponse(okResponse);
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.RegisterSuccess, "Empty registration request successful for " + toUser + "@" + canonicalDomain + " from " + sipRequest.Header.ProxyReceivedFrom + ".", toUser));
}
else
{
SIPEndPoint uacRemoteEndPoint = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedFrom) ?? registerTransaction.RemoteEndPoint;
SIPEndPoint proxySIPEndPoint = SIPEndPoint.TryParse(sipRequest.Header.ProxyReceivedOn);
SIPEndPoint registrarEndPoint = registerTransaction.LocalSIPEndPoint;
SIPResponseStatusCodesEnum updateResult = SIPResponseStatusCodesEnum.Ok;
string updateMessage = null;
DateTime startTime = DateTime.Now;
List <SIPRegistrarBinding> bindingsList = m_registrarBindingsManager.UpdateBindings(
sipAccountAsset.SIPAccount,
proxySIPEndPoint,
uacRemoteEndPoint,
registrarEndPoint,
//sipRequest.Header.Contact[0].ContactURI.CopyOf(),
sipRequest.Header.Contact,
sipRequest.Header.CallId,
sipRequest.Header.CSeq,
//sipRequest.Header.Contact[0].Expires,
sipRequest.Header.Expires,
sipRequest.Header.UserAgent,
out updateResult,
out updateMessage);
//int bindingExpiry = GetBindingExpiry(bindingsList, sipRequest.Header.Contact[0].ContactURI.ToString());
TimeSpan duration = DateTime.Now.Subtract(startTime);
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.RegistrarTiming, "Binding update time for " + toUser + "@" + canonicalDomain + " took " + duration.TotalMilliseconds + "ms.", null));
if (updateResult == SIPResponseStatusCodesEnum.Ok)
{
string proxySocketStr = (proxySIPEndPoint != null) ? " (proxy=" + proxySIPEndPoint.ToString() + ")" : null;
int bindingCount = 1;
foreach (SIPRegistrarBinding binding in bindingsList)
{
string bindingIndex = (bindingsList.Count == 1) ? String.Empty : " (" + bindingCount + ")";
//FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.RegisterSuccess, "Registration successful for " + toUser + "@" + canonicalDomain + " from " + uacRemoteEndPoint + proxySocketStr + ", binding " + binding.ContactSIPURI.ToParameterlessString() + ";expiry=" + binding.Expiry + bindingIndex + ".", toUser));
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.RegisterSuccess, "Registration successful for " + toUser + "@" + canonicalDomain + " from " + uacRemoteEndPoint + ", binding " + binding.ContactSIPURI.ToParameterlessString() + ";expiry=" + binding.Expiry + bindingIndex + ".", toUser));
//FireProxyLogEvent(new SIPMonitorMachineEvent(SIPMonitorMachineEventTypesEnum.SIPRegistrarBindingUpdate, toUser, uacRemoteEndPoint, sipAccount.Id.ToString()));
bindingCount++;
}
// The standard states that the Ok response should contain the list of current bindings but that breaks some UAs. As a
// compromise the list is returned with the Contact that UAC sent as the first one in the list.
bool contactListSupported = m_userAgentConfigs.GetUserAgentContactListSupport(sipRequest.Header.UserAgent);
if (contactListSupported)
{
sipRequest.Header.Contact = GetContactHeader(bindingsList);
}
else
{
// Some user agents can't match the contact header if the expiry is added to it.
sipRequest.Header.Contact[0].Expires = GetBindingExpiry(bindingsList, sipRequest.Header.Contact[0].ContactURI.ToString());;
}
SIPResponse okResponse = GetOkResponse(sipRequest);
// If a request was made for a switchboard token and a certificate is available to sign the tokens then generate it.
//if (sipRequest.Header.SwitchboardTokenRequest > 0 && m_switchbboardRSAProvider != null)
//{
// SwitchboardToken token = new SwitchboardToken(sipRequest.Header.SwitchboardTokenRequest, sipAccount.Owner, uacRemoteEndPoint.Address.ToString());
// lock (m_switchbboardRSAProvider)
// {
// token.SignedHash = Convert.ToBase64String(m_switchbboardRSAProvider.SignHash(Crypto.GetSHAHash(token.GetHashString()), null));
// }
// string tokenXML = token.ToXML(true);
// logger.Debug("Switchboard token set for " + sipAccount.Owner + " with expiry of " + token.Expiry + "s.");
// okResponse.Header.SwitchboardToken = Crypto.SymmetricEncrypt(sipAccount.SIPPassword, sipRequest.Header.AuthenticationHeader.SIPDigest.Nonce, tokenXML);
//}
registerTransaction.SendFinalResponse(okResponse);
}
else
{
// The binding update failed even though the REGISTER request was authorised. This is probably due to a
// temporary problem connecting to the bindings data store. Send Ok but set the binding expiry to the minimum so
// that the UA will try again as soon as possible.
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Error, "Registration request successful but binding update failed for " + toUser + "@" + canonicalDomain + " from " + registerTransaction.RemoteEndPoint + ".", toUser));
sipRequest.Header.Contact[0].Expires = m_minimumBindingExpiry;
SIPResponse okResponse = GetOkResponse(sipRequest);
registerTransaction.SendFinalResponse(okResponse);
}
}
return(RegisterResultEnum.Authenticated);
}
}
catch (Exception excp)
{
string regErrorMessage = "Exception registrarcore registering. " + excp.Message + "\r\n" + registerTransaction.TransactionRequest.ToString();
logger.Error(regErrorMessage);
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Error, regErrorMessage, null));
try
{
SIPResponse errorResponse = GetErrorResponse(registerTransaction.TransactionRequest, SIPResponseStatusCodesEnum.InternalServerError, null);
registerTransaction.SendFinalResponse(errorResponse);
}
catch { }
return(RegisterResultEnum.Error);
}
}
/// <summary>
/// From RFC3261: Stateless Proxy Request Processing:
///
/// For each target, the proxy forwards the request following these
/// 1. Make a copy of the received request
/// 2. Update the Request-URI
/// 3. Update the Max-Forwards header field
/// 4. Optionally add a Record-route header field value
/// 5. Optionally add additional header fields
/// 6. Postprocess routing information
/// 7. Determine the next-hop address, port, and transport
/// 8. Add a Via header field value
/// 9. Add a Content-Length header field if necessary
/// 10. Forward the new request
///
/// See sections 12.2.1.1 and 16.12.1.2 in the SIP RFC for the best explanation on the way the Route header works.
/// </summary>
/// <param name="sipRequest"></param>
/// <param name="inEndPoint">End point the request was received on.</param>
/// <param name="sipChannel"></param>
private void GotRequest(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPRequest sipRequest)
{
try
{
// Calculate the proxy branch parameter for this request. The branch parameter has to be calculated so that INVITE's and CANCEL's generate the same branchid.
//string toTag = (sipRequest.Header.To != null) ? sipRequest.Header.To.ToTag : null;
//string fromTag = (sipRequest.Header.From != null) ? sipRequest.Header.From.FromTag : null;
string route = (sipRequest.Header.Routes != null) ? sipRequest.Header.Routes.ToString() : null;
//string authHeader = (sipRequest.Header.AuthenticationHeader != null) ? sipRequest.Header.AuthenticationHeader.ToString() : null;
string proxyBranch = CallProperties.CreateBranchId(SIPConstants.SIP_BRANCH_MAGICCOOKIE, null, null, sipRequest.Header.CallId, sipRequest.URI.ToString(), null, sipRequest.Header.CSeq, route, null, null);
// Check whether the branch parameter already exists in the Via list. One instance of an already added Via header will be allowed to support a single spiral.
int loopedViaCount = 0;
foreach (SIPViaHeader viaHeader in sipRequest.Header.Vias.Via)
{
//if (viaHeader.Branch == proxyBranch)
SIPEndPoint sentFromEndPoint = SIPEndPoint.TryParse(viaHeader.Transport + ":" + viaHeader.ContactAddress);
if (sentFromEndPoint != null && m_sipTransport.IsLocalSIPEndPoint(sentFromEndPoint))
{
loopedViaCount++;
}
if (loopedViaCount >= 2)
{
SendMonitorEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.SIPProxy, SIPMonitorEventTypesEnum.Warn, "Loop detected on request from " + remoteEndPoint + " to " + sipRequest.URI.ToString() + ".", null));
m_sipTransport.SendResponse(SIPTransport.GetResponse(sipRequest, SIPResponseStatusCodesEnum.LoopDetected, null));
return;
}
}
// Used in the proxy monitor messages only, plays no part in request routing.
string fromUser = (sipRequest.Header.From != null) ? sipRequest.Header.From.FromURI.User : null;
string toUser = (sipRequest.Header.To != null) ? sipRequest.Header.To.ToURI.User : null;
string summaryStr = "req " + sipRequest.Method + " from=" + fromUser + ", to=" + toUser + ", " + remoteEndPoint.ToString();
bool isFromAppServer = (m_sipCallDispatcherFile != null) ? m_sipCallDispatcherFile.IsAppServerEndPoint(remoteEndPoint) : false;
lock (this)
{
m_compiledScript.DefaultScope.RemoveVariable("sys");
m_compiledScript.DefaultScope.RemoveVariable("localEndPoint");
m_compiledScript.DefaultScope.RemoveVariable("isreq");
m_compiledScript.DefaultScope.RemoveVariable("req");
m_compiledScript.DefaultScope.RemoveVariable("remoteEndPoint");
m_compiledScript.DefaultScope.RemoveVariable("summary");
m_compiledScript.DefaultScope.RemoveVariable("proxyBranch");
m_compiledScript.DefaultScope.RemoveVariable("sipMethod");
m_compiledScript.DefaultScope.RemoveVariable("publicip");
m_compiledScript.DefaultScope.RemoveVariable("IsFromAppServer");
m_compiledScript.DefaultScope.SetVariable("sys", m_proxyScriptFacade);
m_compiledScript.DefaultScope.SetVariable("localEndPoint", localSIPEndPoint);
m_compiledScript.DefaultScope.SetVariable("isreq", true);
m_compiledScript.DefaultScope.SetVariable("req", sipRequest);
m_compiledScript.DefaultScope.SetVariable("remoteEndPoint", remoteEndPoint);
m_compiledScript.DefaultScope.SetVariable("summary", summaryStr);
m_compiledScript.DefaultScope.SetVariable("proxyBranch", proxyBranch);
m_compiledScript.DefaultScope.SetVariable("sipMethod", sipRequest.Method.ToString());
m_compiledScript.DefaultScope.SetVariable("publicip", PublicIPAddress);
m_compiledScript.DefaultScope.SetVariable("IsFromAppServer", isFromAppServer);
m_compiledScript.Execute();
}
//if (requestStopwatch.ElapsedMilliseconds > 20)
//{
// logger.Debug("GotRequest processing time=" + requestStopwatch.ElapsedMilliseconds + "ms, script time=" + scriptStopwatch.ElapsedMilliseconds + "ms.");
//}
}
catch (SIPValidationException)
{
throw;
}
catch (Exception excp)
{
string remoteEndPointStr = (remoteEndPoint != null) ? remoteEndPoint.ToString() : null;
string reqExcpError = "Exception SIPProxyCore GotRequest (from " + remoteEndPointStr + "). " + excp.Message;
logger.Error(reqExcpError);
SIPMonitorEvent reqExcpEvent = new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.SIPProxy, SIPMonitorEventTypesEnum.Error, reqExcpError, localSIPEndPoint, remoteEndPoint, null);
SendMonitorEvent(reqExcpEvent);
throw excp;
}
}
