/// <summary>
/// Updates the bindings list for a registrar's address-of-records.
/// </summary>
/// <param name="proxyEndPoint">If the request arrived at this registrar via a proxy then this will contain the end point of the proxy.</param>
/// <param name="uacRecvdEndPoint">The public end point the UAC REGISTER request was deemded to have originated from.</param>
/// <param name="registrarEndPoint">The registrar end point the registration request was received on.</param>
/// <param name="maxAllowedExpiry">The maximum allowed expiry that can be granted to this binding request.</param>
/// <returns>If the binding update was successful the expiry time for it is returned otherwise 0.</returns>
public List<SIPRegistrarBinding> UpdateBindings(
SIPAccount sipAccount,
SIPEndPoint proxySIPEndPoint,
SIPEndPoint remoteSIPEndPoint,
SIPEndPoint registrarSIPEndPoint,
List<SIPContactHeader> contactHeaders,
string callId,
int cseq,
//int contactHeaderExpiresValue,
int expiresHeaderValue,
string userAgent,
out SIPResponseStatusCodesEnum responseStatus,
out string responseMessage)
{
//logger.Debug("UpdateBinding " + bindingURI.ToString() + ".");
int maxAllowedExpiry = m_userAgentConfigs.GetMaxAllowedExpiry(userAgent);
responseMessage = null;
string sipAccountAOR = sipAccount.SIPUsername + "@" + sipAccount.SIPDomain;
responseStatus = SIPResponseStatusCodesEnum.Ok;
try
{
userAgent = (userAgent != null && userAgent.Length > MAX_USERAGENT_LENGTH) ? userAgent.Substring(0, MAX_USERAGENT_LENGTH) : userAgent;
List<SIPRegistrarBinding> bindings = m_bindingsPersistor.Get(b => b.SIPAccountId == sipAccount.Id, null, 0, Int32.MaxValue);
foreach (SIPContactHeader contactHeader in contactHeaders)
{
SIPURI bindingURI = contactHeader.ContactURI.CopyOf();
int contactHeaderExpiresValue = contactHeader.Expires;
int bindingExpiry = 0;
if (bindingURI.Host == m_sipRegisterRemoveAll)
{
if (contactHeaders.Count > 1)
{
// If a register request specifies remove all it cannot contain any other binding requests.
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.BindingRemoval, "Remove all bindings requested for " + sipAccountAOR + " but mutliple bindings specified, rejecting as a bad request.", sipAccount.SIPUsername));
responseStatus = SIPResponseStatusCodesEnum.BadRequest;
break;
}
#region Process remove all bindings.
if (expiresHeaderValue == 0)
{
// Removing all bindings for user.
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.BindingRemoval, "Remove all bindings requested for " + sipAccountAOR + ".", sipAccount.SIPUsername));
// Mark all the current bindings as expired.
if (bindings != null && bindings.Count > 0)
{
for (int index = 0; index < bindings.Count; index++)
{
bindings[index].RemovalReason = SIPBindingRemovalReason.ClientExpiredAll;
bindings[index].Expiry = 0;
m_bindingsPersistor.Update(bindings[index]);
// Remove the NAT keep-alive job if present.
if (m_natKeepAliveJobs.ContainsKey(bindings[index].RemoteSIPSocket))
{
m_natKeepAliveJobs[bindings[index].RemoteSIPSocket].CancelJob();
}
}
}
FireSIPMonitorLogEvent(new SIPMonitorMachineEvent(SIPMonitorMachineEventTypesEnum.SIPRegistrarBindingRemoval, sipAccount.Owner, sipAccount.Id.ToString(), SIPURI.ParseSIPURIRelaxed(sipAccountAOR)));
responseStatus = SIPResponseStatusCodesEnum.Ok;
}
else
{
// Remove all header cannot be present with other headers and must have an Expiry equal to 0.
responseStatus = SIPResponseStatusCodesEnum.BadRequest;
}
#endregion
}
else
{
int requestedExpiry = (contactHeaderExpiresValue != -1) ? contactHeaderExpiresValue : expiresHeaderValue;
requestedExpiry = (requestedExpiry == -1) ? maxAllowedExpiry : requestedExpiry; // This will happen if the Expires header and the Expiry on the Contact are both missing.
bindingExpiry = (requestedExpiry > maxAllowedExpiry) ? maxAllowedExpiry : requestedExpiry;
bindingExpiry = (bindingExpiry < MINIMUM_EXPIRY_SECONDS) ? MINIMUM_EXPIRY_SECONDS : bindingExpiry;
bindingURI.Parameters.Remove(m_sipExpiresParameterKey);
SIPRegistrarBinding binding = GetBindingForContactURI(bindings, bindingURI.ToString());
if (binding != null)
{
if (requestedExpiry <= 0)
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.BindingExpired, "Binding expired by client for " + sipAccountAOR + " from " + remoteSIPEndPoint.ToString() + ".", sipAccount.SIPUsername));
bindings.Remove(binding);
m_bindingsPersistor.Delete(binding);
bindingExpiry = 0;
FireSIPMonitorLogEvent(new SIPMonitorMachineEvent(SIPMonitorMachineEventTypesEnum.SIPRegistrarBindingRemoval, sipAccount.Owner, sipAccount.Id.ToString(), SIPURI.ParseSIPURIRelaxed(sipAccountAOR)));
// Remove the NAT keep-alive job if present.
if (m_natKeepAliveJobs.ContainsKey(binding.RemoteSIPSocket))
{
m_natKeepAliveJobs[binding.RemoteSIPSocket].CancelJob();
}
}
else
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Registrar, "Binding update request for " + sipAccountAOR + " from " + remoteSIPEndPoint.ToString() + ", expiry requested " + requestedExpiry + "s granted " + bindingExpiry + "s.", sipAccount.Owner));
binding.RefreshBinding(bindingExpiry, remoteSIPEndPoint, proxySIPEndPoint, registrarSIPEndPoint, sipAccount.DontMangleEnabled);
DateTime startTime = DateTime.Now;
m_bindingsPersistor.Update(binding);
TimeSpan duration = DateTime.Now.Subtract(startTime);
//FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.RegistrarTiming, "Binding database update time for " + sipAccountAOR + " took " + duration.TotalMilliseconds + "ms.", null));
FireSIPMonitorLogEvent(new SIPMonitorMachineEvent(SIPMonitorMachineEventTypesEnum.SIPRegistrarBindingUpdate, sipAccount.Owner, sipAccount.Id.ToString(), SIPURI.ParseSIPURIRelaxed(sipAccountAOR)));
// Add a NAT keep-alive job if required.
if (sipAccount.SendNATKeepAlives && proxySIPEndPoint != null)
{
AddNATKeepAliveJob(sipAccount, remoteSIPEndPoint, proxySIPEndPoint, binding, bindingExpiry);
}
}
}
else
{
if (requestedExpiry > 0)
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.BindingInProgress, "New binding request for " + sipAccountAOR + " from " + remoteSIPEndPoint.ToString() + ", expiry requested " + requestedExpiry + "s granted " + bindingExpiry + "s.", sipAccount.Owner));
if (bindings.Count >= m_maxBindingsPerAccount)
{
// Need to remove the oldest binding to stay within limit.
//SIPRegistrarBinding oldestBinding = m_bindingsPersistor.Get(b => b.SIPAccountId == sipAccount.Id, null, 0, Int32.MaxValue).OrderBy(x => x.LastUpdateUTC).Last();
SIPRegistrarBinding oldestBinding = bindings.OrderBy(x => x.LastUpdate).Last();
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.BindingInProgress, "Binding limit exceeded for " + sipAccountAOR + " from " + remoteSIPEndPoint.ToString() + " removing oldest binding to stay within limit of " + m_maxBindingsPerAccount + ".", sipAccount.Owner));
m_bindingsPersistor.Delete(oldestBinding);
if (m_natKeepAliveJobs.ContainsKey(binding.RemoteSIPSocket))
{
m_natKeepAliveJobs[binding.RemoteSIPSocket].CancelJob();
}
}
SIPRegistrarBinding newBinding = new SIPRegistrarBinding(sipAccount, bindingURI, callId, cseq, userAgent, remoteSIPEndPoint, proxySIPEndPoint, registrarSIPEndPoint, bindingExpiry);
DateTime startTime = DateTime.Now;
bindings.Add(newBinding);
m_bindingsPersistor.Add(newBinding);
TimeSpan duration = DateTime.Now.Subtract(startTime);
//FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.RegistrarTiming, "Binding database add time for " + sipAccountAOR + " took " + duration.TotalMilliseconds + "ms.", null));
// Add a NAT keep-alive job if required.
if (sipAccount.SendNATKeepAlives && proxySIPEndPoint != null)
{
AddNATKeepAliveJob(sipAccount, remoteSIPEndPoint, proxySIPEndPoint, newBinding, bindingExpiry);
}
FireSIPMonitorLogEvent(new SIPMonitorMachineEvent(SIPMonitorMachineEventTypesEnum.SIPRegistrarBindingUpdate, sipAccount.Owner, sipAccount.Id.ToString(), SIPURI.ParseSIPURIRelaxed(sipAccountAOR)));
}
else
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.BindingFailed, "New binding received for " + sipAccountAOR + " with expired contact," + bindingURI.ToString() + " no update.", sipAccount.Owner));
bindingExpiry = 0;
}
}
responseStatus = SIPResponseStatusCodesEnum.Ok;
}
}
return bindings;
}
catch (Exception excp)
{
logger.Error("Exception UpdateBinding. " + excp.Message);
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Registrar, SIPMonitorEventTypesEnum.Error, "Registrar error updating binding: " + excp.Message + " Binding not updated.", sipAccount.SIPUsername));
responseStatus = SIPResponseStatusCodesEnum.InternalServerError;
return null;
}
}
private void AddNATKeepAliveJob(SIPAccount sipAccount, SIPEndPoint remoteSIPEndPoint, SIPEndPoint proxySIPEndPoint, SIPRegistrarBinding binding, int bindingExpiry)
{
try
{
lock (m_natKeepAliveJobs)
{
if (m_natKeepAliveJobs.ContainsKey(binding.RemoteSIPSocket))
{
//logger.Debug("Updating NAT keep-alive job for binding socket " + binding.RemoteSIPSocket + ".");
m_natKeepAliveJobs[binding.RemoteSIPSocket].Update(proxySIPEndPoint, DateTime.Now.AddSeconds(bindingExpiry));
}
else
{
//logger.Debug("Adding NAT keep-alive job for binding socket " + binding.RemoteSIPSocket + ".");
m_natKeepAliveJobs.Add(binding.RemoteSIPSocket, new NATKeepAliveJob(proxySIPEndPoint, remoteSIPEndPoint, DateTime.Now.AddSeconds(bindingExpiry), sipAccount.Owner));
}
}
}
catch (Exception natAddExcp)
{
logger.Error("Exception AddNATKeepAliveJob for SIP account " + sipAccount.SIPUsername + ". " + natAddExcp.Message);
}
}
/// <summary>
/// Handler for processing incoming SIP requests.
/// </summary>
/// <param name="localSIPEndPoint">The end point the request was received on.</param>
/// <param name="remoteEndPoint">The end point the request came from.</param>
/// <param name="sipRequest">The SIP request received.</param>
private static void SIPTransportRequestReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPRequest sipRequest)
{
try
{
if (sipRequest.Method == SIPMethodsEnum.BYE)
{
throw new NotImplementedException();
}
else if (sipRequest.Method == SIPMethodsEnum.CANCEL)
{
throw new NotImplementedException();
}
else if (sipRequest.Method == SIPMethodsEnum.INVITE)
{
throw new NotImplementedException();
}
else if (sipRequest.Method == SIPMethodsEnum.OPTIONS)
{
SIPNonInviteTransaction optionsTransaction = _sipTransport.CreateNonInviteTransaction(sipRequest, remoteEndPoint, localSIPEndPoint, null);
SIPResponse optionsResponse = SIPTransport.GetResponse(sipRequest, SIPResponseStatusCodesEnum.Ok, null);
optionsTransaction.SendFinalResponse(optionsResponse);
}
else if (sipRequest.Method == SIPMethodsEnum.REGISTER)
{
SIPResponseStatusCodesEnum registerResponse = SIPResponseStatusCodesEnum.Ok;
if (sipRequest.Header.Contact != null && sipRequest.Header.Contact.Count > 0)
{
int expiry = sipRequest.Header.Contact[0].Expires > 0 ? sipRequest.Header.Contact[0].Expires : sipRequest.Header.Expires;
var sipAccount = new SIPAccount(null, sipRequest.Header.From.FromURI.Host, sipRequest.Header.From.FromURI.User, null, null);
SIPRegistrarBinding binding = new SIPRegistrarBinding(sipAccount, sipRequest.Header.Contact[0].ContactURI, null, 0, null, remoteEndPoint, localSIPEndPoint, null, expiry);
if (_sipRegistrations.ContainsKey(sipAccount.SIPUsername))
{
_sipRegistrations.Remove(sipAccount.SIPUsername);
}
_sipRegistrations.Add(sipAccount.SIPUsername, binding);
logger.Debug("Registered contact for " + sipAccount.SIPUsername + " as " + binding.ToContactString() + ".");
}
else
{
registerResponse = SIPResponseStatusCodesEnum.BadRequest;
}
SIPNonInviteTransaction registerTransaction = _sipTransport.CreateNonInviteTransaction(sipRequest, remoteEndPoint, localSIPEndPoint, null);
SIPResponse okResponse = SIPTransport.GetResponse(sipRequest, registerResponse, null);
registerTransaction.SendFinalResponse(okResponse);
}
else
{
logger.Debug("SIP " + sipRequest.Method + " request received but no processing has been set up for it, rejecting.");
}
}
catch (NotImplementedException)
{
logger.Debug(sipRequest.Method + " request processing not implemented for " + sipRequest.URI.ToParameterlessString() + " from " + remoteEndPoint + ".");
SIPNonInviteTransaction notImplTransaction = _sipTransport.CreateNonInviteTransaction(sipRequest, remoteEndPoint, localSIPEndPoint, null);
SIPResponse notImplResponse = SIPTransport.GetResponse(sipRequest, SIPResponseStatusCodesEnum.NotImplemented, null);
notImplTransaction.SendFinalResponse(notImplResponse);
}
}
