/// <summary>
/// Attempts to place a new outgoing call.
/// </summary>
/// <param name="sipCallDescriptor">A call descriptor containing the information about how
/// and where to place the call.</param>
/// <param name="mediaSession">The media session used for this call</param>
public async Task InitiateCall(SIPCallDescriptor sipCallDescriptor, IMediaSession mediaSession)
{
m_uac = new SIPClientUserAgent(m_transport);
m_uac.CallTrying += ClientCallTryingHandler;
m_uac.CallRinging += ClientCallRingingHandler;
m_uac.CallAnswered += ClientCallAnsweredHandler;
m_uac.CallFailed += ClientCallFailedHandler;
SIPEndPoint serverEndPoint = m_uac.GetCallDestination(sipCallDescriptor);
if (serverEndPoint != null)
{
MediaSession = mediaSession;
MediaSession.SessionMediaChanged += MediaSessionOnSessionMediaChanged;
var sdp = await MediaSession.CreateOffer(serverEndPoint.Address).ConfigureAwait(false);
sipCallDescriptor.Content = sdp;
m_uac.Call(sipCallDescriptor);
}
else
{
ClientCallFailed?.Invoke(m_uac, $"Could not resolve destination when placing call to {sipCallDescriptor.Uri}.");
CallEnded();
}
}
/// <summary>
/// Attempts to place a new outgoing call.
/// </summary>
/// <param name="dst">The destination SIP URI to call.</param>
/// <param name="username">Optional Username if authentication is required.</param>
/// <param name="password">Optional. Password if authentication is required.</param>
/// <param name="mediaSession">The RTP session for the call.</param>
public async Task <bool> Call(string dst, string username, string password, IMediaSession mediaSession)
{
if (!SIPURI.TryParse(dst, out var dstUri))
{
throw new ApplicationException("The destination was not recognised as a valid SIP URI.");
}
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(
username ?? SIPConstants.SIP_DEFAULT_USERNAME,
password,
dstUri.ToString(),
SIPConstants.SIP_DEFAULT_FROMURI,
dstUri.CanonicalAddress,
null, null, null,
SIPCallDirection.Out,
SDP.SDP_MIME_CONTENTTYPE,
null,
null);
await InitiateCall(callDescriptor, mediaSession);
TaskCompletionSource <bool> callResult = new TaskCompletionSource <bool>();
ClientCallAnswered += (uac, resp) => Task.Run(() => callResult.SetResult(true));
ClientCallFailed += (uac, errorMessage) => Task.Run(() => callResult.SetResult(false));
return(await callResult.Task);
}
/// <summary>
/// Attempts to place a new outgoing call.
/// </summary>
/// <param name="sipCallDescriptor">A call descriptor containing the information about how and where to place the call.</param>
public void Call(SIPCallDescriptor sipCallDescriptor)
{
m_uac = new SIPClientUserAgent(m_transport);
m_uac.CallTrying += ClientCallTryingHandler;
m_uac.CallRinging += ClientCallRingingHandler;
m_uac.CallAnswered += ClientCallAnsweredHandler;
m_uac.CallFailed += ClientCallFailedHandler;
m_uac.Call(sipCallDescriptor);
}
public SIPNonInviteClientUserAgent(
SIPTransport sipTransport,
SIPEndPoint outboundProxy,
SIPCallDescriptor callDescriptor)
{
m_sipTransport = sipTransport;
m_outboundProxy = outboundProxy;
m_callDescriptor = callDescriptor;
}
/// <summary>
/// Attempts to place a new outgoing call.
/// </summary>
/// <param name="sipCallDescriptor">A call descriptor containing the information about how
/// and where to place the call.</param>
/// <param name="mediaSession">The media session used for this call</param>
public async Task InitiateCallAsync(SIPCallDescriptor sipCallDescriptor, IMediaSession mediaSession)
{
m_cts = new CancellationTokenSource();
m_uac = new SIPClientUserAgent(m_transport);
m_uac.CallTrying += ClientCallTryingHandler;
m_uac.CallRinging += ClientCallRingingHandler;
m_uac.CallAnswered += ClientCallAnsweredHandler;
m_uac.CallFailed += ClientCallFailedHandler;
// Can be DNS lookups involved in getting the call destination.
SIPEndPoint serverEndPoint = await Task.Run <SIPEndPoint>(() => { return(m_uac.GetCallDestination(sipCallDescriptor)); }).ConfigureAwait(false);
if (serverEndPoint != null)
{
MediaSession = mediaSession;
MediaSession.OnRtpEvent += OnRemoteRtpEvent;
//MediaSession.OnRtpClosed += (reason) => Hangup();
MediaSession.OnRtpClosed += (reason) =>
{
if (!MediaSession.IsClosed)
{
logger.LogWarning($"RTP channel was closed with reason {reason}.");
}
};
RTCOfferOptions offerOptions = new RTCOfferOptions {
RemoteSignallingAddress = serverEndPoint.Address
};
var sdp = await mediaSession.createOffer(offerOptions).ConfigureAwait(false);
mediaSession.setLocalDescription(new RTCSessionDescription {
sdp = sdp, type = RTCSdpType.offer
});
if (mediaSession.localDescription == null)
{
ClientCallFailed?.Invoke(m_uac, $"Could not create a local SDP offer.");
CallEnded();
}
else
{
sipCallDescriptor.Content = mediaSession.localDescription.sdp.ToString();
// This initiates the call but does not wait for an answer.
m_uac.Call(sipCallDescriptor);
}
}
else
{
ClientCallFailed?.Invoke(m_uac, $"Could not resolve destination when placing call to {sipCallDescriptor.Uri}.");
CallEnded();
}
}
public SIPRequest Call(SIPCallDescriptor sipCallDescriptor, SIPEndPoint serverEndPoint)
{
m_uacCallDescriptor = sipCallDescriptor;
m_uac = new SIPClientUserAgent(m_sipTransport, m_outboundProxy);
m_uac.CallFailed += ClientCallFailed;
m_uac.CallTrying += (uac, resp) => CallTrying?.Invoke(uac, resp);
m_uac.CallRinging += (uac, resp) => CallRinging?.Invoke(uac, resp);
m_uac.CallAnswered += ClientCallAnswered;
return(m_uac.Call(m_uacCallDescriptor));
}
private SIPRequest GetInviteRequest(string callURI, SIPCallDescriptor sipCallDescriptor)
{
SIPFromHeader fromHeader = sipCallDescriptor.GetFromHeader();
SIPRequest inviteRequest = new SIPRequest(SIPMethodsEnum.INVITE, SIPURI.ParseSIPURI(callURI));
inviteRequest.LocalSIPEndPoint = m_blackhole;
SIPHeader inviteHeader = new SIPHeader(fromHeader, new SIPToHeader(null, inviteRequest.URI, null), 1, CallProperties.CreateNewCallId());
inviteHeader.From.FromTag = CallProperties.CreateNewTag();
// For incoming calls forwarded via the dial plan the username needs to go into the Contact header.
inviteHeader.Contact = new List <SIPContactHeader>()
{
new SIPContactHeader(null, new SIPURI(inviteRequest.URI.Scheme, m_blackhole))
};
inviteHeader.CSeqMethod = SIPMethodsEnum.INVITE;
inviteRequest.Header = inviteHeader;
SIPViaHeader viaHeader = new SIPViaHeader(m_blackhole, CallProperties.CreateBranchId());
inviteRequest.Header.Vias.PushViaHeader(viaHeader);
try
{
if (sipCallDescriptor.CustomHeaders != null && sipCallDescriptor.CustomHeaders.Count > 0)
{
foreach (string customHeader in sipCallDescriptor.CustomHeaders)
{
if (customHeader.IsNullOrBlank())
{
continue;
}
else if (customHeader.Trim().StartsWith(SIPHeaders.SIP_HEADER_USERAGENT))
{
inviteRequest.Header.UserAgent = customHeader.Substring(customHeader.IndexOf(":") + 1).Trim();
}
else
{
inviteRequest.Header.UnknownHeaders.Add(customHeader);
}
}
}
}
catch (Exception excp)
{
logger.LogError("Exception Parsing CustomHeader for GetInviteRequest. " + excp.Message + sipCallDescriptor.CustomHeaders);
}
return(inviteRequest);
}
public void Call(SIPCallDescriptor sipCallDescriptor)
{
try
{
m_uacCallDescriptor = sipCallDescriptor;
SIPRequest uacInviteRequest = GetInviteRequest(m_uacCallDescriptor.Uri, sipCallDescriptor);
if (sipCallDescriptor.MangleResponseSDP && sipCallDescriptor.MangleIPAddress != null)
{
uacInviteRequest.Header.ProxyReceivedFrom = sipCallDescriptor.MangleIPAddress.ToString();
}
uacInviteRequest.Body = sipCallDescriptor.Content;
uacInviteRequest.Header.ContentType = sipCallDescriptor.ContentType;
uacInviteRequest.LocalSIPEndPoint = m_blackhole;
uacInviteRequest.RemoteSIPEndPoint = m_blackhole;
// Now that we have a destination socket create a new UAC transaction for forwarded leg of the call.
m_uacTransaction = m_sipTransport.CreateUACTransaction(uacInviteRequest, m_blackhole, m_blackhole, null);
if (m_uacTransaction.CDR != null)
{
m_uacTransaction.CDR.Owner = m_uacOwner;
m_uacTransaction.CDR.AdminMemberId = m_uacAdminMemberId;
m_uacTransaction.CDR.DialPlanContextID = (m_uacCallDescriptor != null) ? m_uacCallDescriptor.DialPlanContextID : Guid.Empty;
}
//uacTransaction.UACInviteTransactionInformationResponseReceived += ServerInformationResponseReceived;
//uacTransaction.UACInviteTransactionFinalResponseReceived += ServerFinalResponseReceived;
//uacTransaction.UACInviteTransactionTimedOut += ServerTimedOut;
//uacTransaction.TransactionTraceMessage += TransactionTraceMessage;
m_uacTransaction.SendInviteRequest(m_blackhole, m_uacTransaction.TransactionRequest);
SIPRequest uasInviteRequest = uacInviteRequest.Copy();
uasInviteRequest.LocalSIPEndPoint = m_blackhole;
uasInviteRequest.RemoteSIPEndPoint = m_blackhole;
uasInviteRequest.Header.Vias.TopViaHeader.Branch = CallProperties.CreateBranchId();
m_uasTransaction = m_sipTransport.CreateUASTransaction(uasInviteRequest, m_blackhole, m_blackhole, null);
SetOwner(sipCallDescriptor.ToSIPAccount.Owner, sipCallDescriptor.ToSIPAccount.AdminMemberId);
//m_uasTransaction.TransactionTraceMessage += TransactionTraceMessage;
//m_uasTransaction.UASInviteTransactionTimedOut += ClientTimedOut;
//m_uasTransaction.UASInviteTransactionCancelled += (t) => { };
QueueNewCall_External(this);
}
catch (Exception excp)
{
logger.LogError("Exception SIPB2BUserAgent Call. " + excp.Message);
}
}
public void Call(SIPCallDescriptor sipCallDescriptor)
{
CallDescriptor = sipCallDescriptor;
m_xmppClient = new XMPPClient("talk.google.com", 5222, "google.com", null, null);
m_xmppClient.IsBound += IsBound;
m_xmppClient.Answered += Answered;
IPEndPoint sdpEndPoint = SDP.GetSDPRTPEndPoint(CallDescriptor.Content);
if (IPSocket.IsPrivateAddress(sdpEndPoint.Address.ToString()))
{
bool wasSDPMangled;
CallDescriptor.Content = SIPPacketMangler.MangleSDP(CallDescriptor.Content, CallDescriptor.MangleIPAddress.ToString(), out wasSDPMangled);
}
ThreadPool.QueueUserWorkItem(delegate { m_xmppClient.Connect(); });
}
public SIPNonInviteClientUserAgent(
SIPTransport sipTransport,
SIPEndPoint outboundProxy,
SIPCallDescriptor callDescriptor,
string owner,
string adminMemberID,
SIPMonitorLogDelegate logDelegate)
{
m_sipTransport = sipTransport;
m_outboundProxy = outboundProxy;
m_callDescriptor = callDescriptor;
m_owner = owner;
m_adminMemberID = adminMemberID;
Log_External = logDelegate;
}
public SIPNonInviteClientUserAgent(
SIPTransport sipTransport,
SIPEndPoint outboundProxy,
SIPCallDescriptor callDescriptor,
string owner,
string adminMemberID,
SIPMonitorLogDelegate logDelegate)
{
m_sipTransport = sipTransport;
m_outboundProxy = outboundProxy;
m_callDescriptor = callDescriptor;
m_owner = owner;
m_adminMemberID = adminMemberID;
Log_External = logDelegate;
}
/// <summary>
/// Attempts to place a new outgoing call.
/// </summary>
/// <param name="sipCallDescriptor">A call descriptor containing the information about how
/// and where to place the call.</param>
/// <param name="mediaSession">The media session used for this call</param>
public async Task InitiateCallAsync(SIPCallDescriptor sipCallDescriptor, IMediaSession mediaSession)
{
m_cts = new CancellationTokenSource();
m_uac = new SIPClientUserAgent(m_transport);
m_uac.CallTrying += ClientCallTryingHandler;
m_uac.CallRinging += ClientCallRingingHandler;
m_uac.CallAnswered += ClientCallAnsweredHandler;
m_uac.CallFailed += ClientCallFailedHandler;
// Can be DNS lookups involved in getting the call destination.
SIPEndPoint serverEndPoint = await Task.Run <SIPEndPoint>(() => { return(m_uac.GetCallDestination(sipCallDescriptor)); }).ConfigureAwait(false);
if (serverEndPoint != null)
{
MediaSession = mediaSession;
MediaSession.OnRtpEvent += OnRemoteRtpEvent;
//MediaSession.OnRtpClosed += (reason) => Hangup();
MediaSession.OnRtpClosed += (reason) =>
{
if (!MediaSession.IsClosed)
{
logger.LogWarning($"RTP channel was closed with reason {reason}.");
}
};
var sdpAnnounceAddress = NetServices.GetLocalAddressForRemote(serverEndPoint.Address);
var sdp = mediaSession.CreateOffer(sdpAnnounceAddress);
if (sdp == null)
{
ClientCallFailed?.Invoke(m_uac, $"Could not generate an offer.", null);
CallEnded();
}
else
{
sipCallDescriptor.Content = sdp.ToString();
// This initiates the call but does not wait for an answer.
m_uac.Call(sipCallDescriptor);
}
}
else
{
ClientCallFailed?.Invoke(m_uac, $"Could not resolve destination when placing call to {sipCallDescriptor.Uri}.", null);
CallEnded();
}
}
/// <summary>
/// Attempts to place a new outgoing call AND waits for the call to be answered or fail.
/// Use <see cref="InitiateCallAsync(SIPCallDescriptor, IMediaSession)"/> to start a call without
/// waiting for it to complete and monitor <see cref="ClientCallAnsweredHandler"/> and
/// <see cref="ClientCallFailedHandler"/> to detect an answer or failure.
/// </summary>
/// <param name="callDescriptor">The full descriptor for the call destination. Allows customising
/// of additional options above the standard username, password and destination URI.</param>
/// <param name="mediaSession">The RTP session for the call.</param>
public async Task <bool> Call(SIPCallDescriptor callDescriptor, IMediaSession mediaSession)
{
TaskCompletionSource <bool> callResult = new TaskCompletionSource <bool>(TaskCreationOptions.RunContinuationsAsynchronously);
await InitiateCallAsync(callDescriptor, mediaSession).ConfigureAwait(false);
ClientCallAnswered += (uac, resp) =>
{
callResult.TrySetResult(true);
};
ClientCallFailed += (uac, errorMessage) =>
{
callResult.TrySetResult(false);
};
return(callResult.Task.Result);
}
public void Call(SIPCallDescriptor sipCallDescriptor)
{
CallDescriptor = sipCallDescriptor;
m_xmppClient = new XMPPClient("talk.google.com", 5222, "google.com", null, null);
m_xmppClient.IsBound += IsBound;
m_xmppClient.Answered += Answered;
IPEndPoint sdpEndPoint = SDP.GetSDPRTPEndPoint(CallDescriptor.Content);
if (IPSocket.IsPrivateAddress(sdpEndPoint.Address.ToString()))
{
bool wasSDPMangled;
CallDescriptor.Content = SIPPacketMangler.MangleSDP(CallDescriptor.Content, CallDescriptor.MangleIPAddress.ToString(), out wasSDPMangled);
}
ThreadPool.QueueUserWorkItem(delegate { m_xmppClient.Connect(); });
}
/// <summary>
/// Attempts to place a new outgoing call AND waits for the call to be answered or fail.
/// Use <see cref="InitiateCallAsync(SIPCallDescriptor, IMediaSession)"/> to start a call without
/// waiting for it to complete and monitor <see cref="ClientCallAnsweredHandler"/> and
/// <see cref="ClientCallFailedHandler"/> to detect an answer or failure.
/// </summary>
/// <param name="dst">The destination SIP URI to call.</param>
/// <param name="username">Optional Username if authentication is required.</param>
/// <param name="password">Optional. Password if authentication is required.</param>
/// <param name="mediaSession">The RTP session for the call.</param>
public Task <bool> Call(string dst, string username, string password, IMediaSession mediaSession)
{
if (!SIPURI.TryParse(dst, out var dstUri))
{
throw new ApplicationException("The destination was not recognised as a valid SIP URI.");
}
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(
username ?? SIPConstants.SIP_DEFAULT_USERNAME,
password,
dstUri.ToString(),
SIPConstants.SIP_DEFAULT_FROMURI,
dstUri.CanonicalAddress,
null, null, null,
SIPCallDirection.Out,
SDP.SDP_MIME_CONTENTTYPE,
null,
null);
return(Call(callDescriptor, mediaSession));
}
public override void Start()
{
try
{
base.Start();
m_activeAppServerEntry = GetActiveAppServer();
if (m_activeAppServerEntry != null)
{
while (!m_stop)
{
Thread.Sleep(Convert.ToInt32(m_interval.TotalMilliseconds % Int32.MaxValue));
logger.Debug("AppServerDispatcher executing.");
m_startCheckTime.Reset();
m_startCheckTime.Start();
SIPClientUserAgent uac = new SIPClientUserAgent(m_sipTransport, null, null, null, LogMonitorEvent);
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(null, null, m_activeAppServerEntry.AppServerURI.ToString(), null, null, null, null, null, SIPCallDirection.Out, null, null, null);
callDescriptor.MangleResponseSDP = false;
uac.CallFailed += CallFailed;
uac.CallAnswered += CallAnswered;
uac.Call(callDescriptor);
uac.ServerTransaction.CDR = null;
}
}
else
{
logger.Warn("No active app server could be set in AppServerDispatcher.Start, job stopping.");
}
}
catch (Exception excp)
{
logger.Error("Exception AppServerDispatcher StartJob. " + excp.Message);
}
}
public SIPCallDescriptor CopyOf()
{
List <string> copiedCustomHeaders = null;
if (CustomHeaders != null)
{
copiedCustomHeaders = new List <string>();
copiedCustomHeaders.InsertRange(0, CustomHeaders);
}
SIPCallDescriptor copy = new SIPCallDescriptor(
Username,
Password,
Uri,
From,
To,
RouteSet,
copiedCustomHeaders,
AuthUsername,
CallDirection,
ContentType,
Content,
(MangleIPAddress != null) ? new IPAddress(MangleIPAddress.GetAddressBytes()) : null);
// Options.
copy.DelaySeconds = DelaySeconds;
copy.RedirectMode = RedirectMode;
copy.CallDurationLimit = CallDurationLimit;
copy.MangleResponseSDP = MangleResponseSDP;
copy.FromDisplayName = FromDisplayName;
copy.FromURIUsername = FromURIUsername;
copy.FromURIHost = FromURIHost;
copy.TransferMode = TransferMode;
copy.ToSIPAccount = ToSIPAccount;
return(copy);
}
public void Call(SIPCallDescriptor descriptor)
{
try
{
CallDescriptor = descriptor;
SIPURI destinationURI = SIPURI.ParseSIPURIRelaxed(descriptor.Uri);
SIPDialogue = m_googleVoiceCall.InitiateCall(descriptor.Username, descriptor.Password, descriptor.CallbackNumber, destinationURI.User, descriptor.CallbackPattern, descriptor.CallbackPhoneType, MAX_CALLBACK_WAIT_TIME, descriptor.ContentType, descriptor.Content);
if (SIPDialogue != null)
{
CallAnswered(this, null);
}
else
{
CallFailed(this, "Google Voice call failed.");
}
}
catch (Exception excp)
{
logger.Error("Exception GoogleVoiceCallAgent Call. " + excp.Message);
CallFailed(this, excp.Message);
}
}
//private SIPDNSLookupResult ResolveSIPEndPoint(SIPURI uri, bool async)
//{
// logger.Debug("Resolving SIP URI " + uri.ToParameterlessString() + ".");
// return null;
//}
/// <summary>
/// Places an outgoing SIP call.
/// </summary>
/// <param name="destination">The SIP URI to place a call to. The destination can be a full SIP URI in which case the all will
/// be placed anonymously directly to that URI. Alternatively it can be just the user portion of a URI in which case it will
/// be sent to the configured SIP server.</param>
public void Call(string destination, IPEndPoint rtpEndPoint, string sipUsername, string sipPassword, string realm)
{
// Determine if this is a direct anonymous call or whether it should be placed using the pre-configured SIP server account.
SIPURI callURI = null;
//string sipUsername = null;
//string sipPassword = null;
string fromHeader = null;
//if (destination.Contains("@") || m_sipServer == null)
//{
// Anonymous call direct to SIP server specified in the URI.
callURI = SIPURI.ParseSIPURIRelaxed(destination);
//}
//else
//{
// // This call will use the pre-configured SIP account.
// callURI = SIPURI.ParseSIPURIRelaxed(destination + "@" + m_sipServer);
// sipUsername = m_sipUsername;
// sipPassword = m_sipPassword;
fromHeader = (new SIPFromHeader(sipUsername, new SIPURI(sipUsername, realm, null), null)).ToString();
//}
StatusMessage("Starting call to " + callURI.ToString() + ".");
m_uac = new SIPClientUserAgent(m_sipTransport, null, null, null, null);
m_uac.CallTrying += CallTrying;
m_uac.CallRinging += CallRinging;
m_uac.CallAnswered += CallAnswered;
m_uac.CallFailed += CallFailed;
_audioChannel = new AudioChannel(rtpEndPoint);
// Get the SDP requesting that the public IP address be used if the host on the call destination is not a private IP address.
SDP sdp = _audioChannel.GetSDP();
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(sipUsername, sipPassword, callURI.ToString(), fromHeader, null, null, null, null, SIPCallDirection.Out, SDP.SDP_MIME_CONTENTTYPE, sdp.ToString(), null);
m_uac.Call(callDescriptor);
}
private void StartNewCallAsync(SIPCallDescriptor callDescriptor)
{
try
{
callDescriptor.DialPlanContextID = (m_dialPlanContext != null) ? m_dialPlanContext.DialPlanContextID : Guid.Empty;
if (Thread.CurrentThread.Name == null)
{
Thread.CurrentThread.Name = THEAD_NAME + DateTime.Now.ToString("HHmmss") + "-" + Crypto.GetRandomString(3);
}
StartNewCallSync(callDescriptor);
}
catch (Exception excp)
{
logger.Error("Exception StartNewCallAsync. " + excp.Message);
}
}
public void ReferOutOfDialog(SIPURI fromUri, SIPURI toUri, SIPURI referToUri, ReplacesCallDescriptor sipReplacesCallDescriptor)
{
try
{
m_sipCallDescriptor = new SIPCallDescriptor(null,toUri.ToString(),fromUri.ToString(),null,null);
m_sipCallDescriptor.Gruu = toUri.Parameters.Get(SIPCallDescriptor.GRUU_KEY);
m_sipCallDescriptor.ReplacesCall = sipReplacesCallDescriptor;
SIPURI callURI = SIPURI.ParseSIPURI(m_sipCallDescriptor.Uri);
// If the outbound proxy is a loopback address, as it will normally be for local deployments, then it cannot be overriden.
if (m_outboundProxy != null && IPAddress.IsLoopback(m_outboundProxy.Address))
{
m_serverEndPoint = m_outboundProxy;
}
else if (!m_sipCallDescriptor.ProxySendFrom.IsNullOrBlank())
{
// If the binding has a specific proxy end point sent then the request needs to be forwarded to the proxy's default end point for it to take care of.
SIPEndPoint outboundProxyEndPoint = SIPEndPoint.ParseSIPEndPoint(m_sipCallDescriptor.ProxySendFrom);
m_outboundProxy = new SIPEndPoint(SIPProtocolsEnum.udp, new IPEndPoint(outboundProxyEndPoint.Address, m_defaultSIPPort));
m_serverEndPoint = m_outboundProxy;
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "SIPReferClientUserAgent refer request using alternate outbound proxy of " + m_outboundProxy + ".", Owner));
}
else if (m_outboundProxy != null)
{
// Using the system outbound proxy only, no additional user routing requirements.
m_serverEndPoint = m_outboundProxy;
}
// A custom route set may have been specified for the call.
if (m_sipCallDescriptor.RouteSet != null && m_sipCallDescriptor.RouteSet.IndexOf(OUTBOUNDPROXY_AS_ROUTESET_CHAR) != -1)
{
try
{
RouteSet = new SIPRouteSet();
RouteSet.PushRoute(new SIPRoute(m_sipCallDescriptor.RouteSet, true));
}
catch
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Error an outbound proxy value was not recognised in SIPReferClientUserAgent refer request. " + m_sipCallDescriptor.RouteSet + ".", Owner));
}
}
// No outbound proxy, determine the forward destination based on the SIP request.
if (m_serverEndPoint == null)
{
SIPDNSLookupResult lookupResult = null;
if (RouteSet == null || RouteSet.Length == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Attempting to resolve " + callURI.Host + ".", Owner));
lookupResult = m_sipTransport.GetURIEndPoint(callURI, false);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Route set for refer request " + RouteSet.ToString() + ".", Owner));
lookupResult = m_sipTransport.GetURIEndPoint(RouteSet.TopRoute.URI, false);
}
if (lookupResult.LookupError != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "DNS error resolving " + callURI.Host + ", " + lookupResult.LookupError + ". Refer request cannot proceed.", Owner));
}
else
{
m_serverEndPoint = lookupResult.GetSIPEndPoint();
}
}
if (m_serverEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Switching to " + SIPURI.ParseSIPURI(m_sipCallDescriptor.Uri).CanonicalAddress + " via " + m_serverEndPoint + ".", Owner));
m_localSIPEndPoint = m_sipTransport.GetDefaultSIPEndPoint(m_serverEndPoint);
if (m_localSIPEndPoint == null)
{
throw new ApplicationException("The refer request could not locate an appropriate SIP transport channel for protocol " + callURI.Protocol + ".");
}
SIPRequest referRequest = GetReferRequest(m_localSIPEndPoint,referToUri, sipReplacesCallDescriptor);
// Now that we have a destination socket create a new UAC transaction for forwarded leg of the call.
m_serverTransaction = m_sipTransport.CreateNonInviteTransaction(referRequest, m_serverEndPoint, m_localSIPEndPoint, m_outboundProxy);
m_serverTransaction.NonInviteTransactionFinalResponseReceived += m_serverTransaction_NonInviteTransactionFinalResponseReceived;
m_serverTransaction.NonInviteTransactionTimedOut += m_serverTransaction_NonInviteTransactionTimedOut;
m_serverTransaction.TransactionTraceMessage += TransactionTraceMessage;
m_serverTransaction.SendReliableRequest();
}
else
{
if (RouteSet == null || RouteSet.Length == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Forward leg failed, could not resolve URI host " + callURI.Host, Owner));
FireReferFailed(this, "unresolvable destination " + callURI.Host);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Forward leg failed, could not resolve top Route host " + RouteSet.TopRoute.Host, Owner));
FireReferFailed(this, "unresolvable destination " + RouteSet.TopRoute.Host);
}
}
}
catch (ApplicationException appExcp)
{
FireReferFailed(this, appExcp.Message);
}
catch (Exception excp)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.ReferUserAgentClient, SIPMonitorEventTypesEnum.Refer, "Exception UserAgentClient Call. " + excp.Message, Owner));
FireReferFailed(this, excp.Message);
}
}
public void Call(SIPCallDescriptor sipCallDescriptor)
{
try
{
m_sipCallDescriptor = sipCallDescriptor;
SIPURI callURI = SIPURI.ParseSIPURI(sipCallDescriptor.Uri);
SIPRouteSet routeSet = null;
if (!m_callCancelled)
{
// If the outbound proxy is a loopback address, as it will normally be for local deployments, then it cannot be overriden.
if (m_outboundProxy != null && IPAddress.IsLoopback(m_outboundProxy.Address))
{
m_serverEndPoint = m_outboundProxy;
}
else if (!sipCallDescriptor.ProxySendFrom.IsNullOrBlank())
{
// If the binding has a specific proxy end point sent then the request needs to be forwarded to the proxy's default end point for it to take care of.
SIPEndPoint outboundProxyEndPoint = SIPEndPoint.ParseSIPEndPoint(sipCallDescriptor.ProxySendFrom);
m_outboundProxy = new SIPEndPoint(SIPProtocolsEnum.udp, new IPEndPoint(outboundProxyEndPoint.Address, m_defaultSIPPort));
m_serverEndPoint = m_outboundProxy;
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "SIPClientUserAgent Call using alternate outbound proxy of " + m_outboundProxy + ".", Owner));
}
else if (m_outboundProxy != null)
{
// Using the system outbound proxy only, no additional user routing requirements.
m_serverEndPoint = m_outboundProxy;
}
// A custom route set may have been specified for the call.
if (m_sipCallDescriptor.RouteSet != null && m_sipCallDescriptor.RouteSet.IndexOf(OUTBOUNDPROXY_AS_ROUTESET_CHAR) != -1)
{
try
{
routeSet = new SIPRouteSet();
routeSet.PushRoute(new SIPRoute(m_sipCallDescriptor.RouteSet, true));
}
catch
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Error an outbound proxy value was not recognised in SIPClientUserAgent Call. " + m_sipCallDescriptor.RouteSet + ".", Owner));
}
}
// No outbound proxy, determine the forward destination based on the SIP request.
if (m_serverEndPoint == null)
{
SIPDNSLookupResult lookupResult = null;
if (routeSet == null || routeSet.Length == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Attempting to resolve " + callURI.Host + ".", Owner));
lookupResult = m_sipTransport.GetURIEndPoint(callURI, false);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Route set for call " + routeSet.ToString() + ".", Owner));
lookupResult = m_sipTransport.GetURIEndPoint(routeSet.TopRoute.URI, false);
}
if (lookupResult.LookupError != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "DNS error resolving " + callURI.Host + ", " + lookupResult.LookupError + ". Call cannot proceed.", Owner));
}
else
{
m_serverEndPoint = lookupResult.GetSIPEndPoint();
}
}
if (m_serverEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Switching to " + SIPURI.ParseSIPURI(m_sipCallDescriptor.Uri).CanonicalAddress + " via " + m_serverEndPoint + ".", Owner));
m_localSIPEndPoint = m_sipTransport.GetDefaultSIPEndPoint(m_serverEndPoint);
if (m_localSIPEndPoint == null)
{
throw new ApplicationException("The call could not locate an appropriate SIP transport channel for protocol " + callURI.Protocol + ".");
}
string content = sipCallDescriptor.Content;
if (content.IsNullOrBlank())
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Body on UAC call was empty.", Owner));
}
else if (m_sipCallDescriptor.ContentType == m_sdpContentType)
{
if (!m_sipCallDescriptor.MangleResponseSDP)
{
IPEndPoint sdpEndPoint = SDP.GetSDPRTPEndPoint(content);
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call was set to NOT mangle, RTP socket " + sdpEndPoint.ToString() + ".", Owner));
}
else
{
IPEndPoint sdpEndPoint = SDP.GetSDPRTPEndPoint(content);
if (sdpEndPoint != null)
{
if (!IPSocket.IsPrivateAddress(sdpEndPoint.Address.ToString()))
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call had public IP not mangled, RTP socket " + sdpEndPoint.ToString() + ".", Owner));
}
else
{
bool wasSDPMangled = false;
if (sipCallDescriptor.MangleIPAddress != null)
{
if (sdpEndPoint != null)
{
content = SIPPacketMangler.MangleSDP(content, sipCallDescriptor.MangleIPAddress.ToString(), out wasSDPMangled);
}
}
if (wasSDPMangled)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call had RTP socket mangled from " + sdpEndPoint.ToString() + " to " + sipCallDescriptor.MangleIPAddress.ToString() + ":" + sdpEndPoint.Port + ".", Owner));
}
else if (sdpEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC could not be mangled, using original RTP socket of " + sdpEndPoint.ToString() + ".", Owner));
}
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP RTP socket on UAC call could not be determined.", Owner));
}
}
}
SIPRequest switchServerInvite = GetInviteRequest(m_sipCallDescriptor, CallProperties.CreateBranchId(), CallProperties.CreateNewCallId(), m_localSIPEndPoint, routeSet, content, sipCallDescriptor.ContentType);
// Now that we have a destination socket create a new UAC transaction for forwarded leg of the call.
m_serverTransaction = m_sipTransport.CreateUACTransaction(switchServerInvite, m_serverEndPoint, m_localSIPEndPoint, m_outboundProxy);
if (m_serverTransaction.CDR != null)
{
m_serverTransaction.CDR.Owner = Owner;
m_serverTransaction.CDR.AdminMemberId = AdminMemberId;
}
m_serverTransaction.UACInviteTransactionInformationResponseReceived += ServerInformationResponseReceived;
m_serverTransaction.UACInviteTransactionFinalResponseReceived += ServerFinalResponseReceived;
m_serverTransaction.UACInviteTransactionTimedOut += ServerTimedOut;
m_serverTransaction.TransactionTraceMessage += TransactionTraceMessage;
m_serverTransaction.SendInviteRequest(m_serverEndPoint, m_serverTransaction.TransactionRequest);
}
else
{
if (routeSet == null || routeSet.Length == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Forward leg failed, could not resolve URI host " + callURI.Host, Owner));
FireCallFailed(this, "unresolvable destination " + callURI.Host);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Forward leg failed, could not resolve top Route host " + routeSet.TopRoute.Host, Owner));
FireCallFailed(this, "unresolvable destination " + routeSet.TopRoute.Host);
}
}
}
}
catch (ApplicationException appExcp)
{
FireCallFailed(this, appExcp.Message);
}
catch (Exception excp)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Exception UserAgentClient Call. " + excp.Message, Owner));
FireCallFailed(this, excp.Message);
}
}
private SIPRequest GetInviteRequest(string callURI, SIPCallDescriptor sipCallDescriptor)
{
SIPFromHeader fromHeader = sipCallDescriptor.GetFromHeader();
SIPRequest inviteRequest = new SIPRequest(SIPMethodsEnum.INVITE, SIPURI.ParseSIPURI(callURI));
inviteRequest.LocalSIPEndPoint = m_blackhole;
SIPHeader inviteHeader = new SIPHeader(fromHeader, new SIPToHeader(null, inviteRequest.URI, null), 1, CallProperties.CreateNewCallId());
inviteHeader.From.FromTag = CallProperties.CreateNewTag();
// For incoming calls forwarded via the dial plan the username needs to go into the Contact header.
inviteHeader.Contact = new List<SIPContactHeader>() { new SIPContactHeader(null, new SIPURI(inviteRequest.URI.Scheme, m_blackhole)) };
inviteHeader.CSeqMethod = SIPMethodsEnum.INVITE;
inviteRequest.Header = inviteHeader;
SIPViaHeader viaHeader = new SIPViaHeader(m_blackhole, CallProperties.CreateBranchId());
inviteRequest.Header.Vias.PushViaHeader(viaHeader);
try
{
if (sipCallDescriptor.CustomHeaders != null && sipCallDescriptor.CustomHeaders.Count > 0)
{
foreach (string customHeader in sipCallDescriptor.CustomHeaders)
{
if (customHeader.IsNullOrBlank())
{
continue;
}
else if (customHeader.Trim().StartsWith(SIPHeaders.SIP_HEADER_USERAGENT))
{
inviteRequest.Header.UserAgent = customHeader.Substring(customHeader.IndexOf(":") + 1).Trim();
}
else
{
inviteRequest.Header.UnknownHeaders.Add(customHeader);
}
}
}
}
catch (Exception excp)
{
logger.Error("Exception Parsing CustomHeader for GetInviteRequest. " + excp.Message + sipCallDescriptor.CustomHeaders);
}
return inviteRequest;
}
/// <summary>
/// Gets the destination of the remote SIP end point for this call.
/// </summary>
/// <param name="sipCallDescriptor">The call descriptor containing the settings to use to place the call.</param>
/// <returns>The server end point for the call.</returns>
public async Task <SIPEndPoint> GetCallDestination(SIPCallDescriptor sipCallDescriptor)
{
SIPURI callURI = SIPURI.ParseSIPURI(sipCallDescriptor.Uri);
SIPEndPoint serverEndPoint = null;
// If the outbound proxy is a loopback address, as it will normally be for local deployments, then it cannot be overriden.
if (m_outboundProxy != null && IPAddress.IsLoopback(m_outboundProxy.Address))
{
serverEndPoint = m_outboundProxy;
}
else if (!sipCallDescriptor.ProxySendFrom.IsNullOrBlank())
{
// If the binding has a specific proxy end point sent then the request needs to be forwarded to the proxy's default end point for it to take care of.
//SIPEndPoint outboundProxyEndPoint = SIPEndPoint.ParseSIPEndPoint(sipCallDescriptor.ProxySendFrom);
//m_outboundProxy = new SIPEndPoint(SIPProtocolsEnum.udp, outboundProxyEndPoint.Address, SIPConstants.DEFAULT_SIP_PORT);
//m_serverEndPoint = m_outboundProxy;
m_outboundProxy = SIPEndPoint.ParseSIPEndPoint(sipCallDescriptor.ProxySendFrom);
serverEndPoint = m_outboundProxy;
logger.LogDebug($"SIPClientUserAgent Call using alternate outbound proxy of {serverEndPoint}.");
}
else if (m_outboundProxy != null)
{
// Using the system outbound proxy only, no additional user routing requirements.
serverEndPoint = m_outboundProxy;
}
// No outbound proxy, determine the forward destination based on the SIP request.
if (serverEndPoint == null)
{
//SIPDNSLookupResult lookupResult = null;
SIPEndPoint lookupResult = null;
double lookupDurationMilliseconds = 0;
if (sipCallDescriptor.RouteSet != null && sipCallDescriptor.RouteSet.IndexOf(OUTBOUNDPROXY_AS_ROUTESET_CHAR) != -1)
{
var routeSet = new SIPRouteSet();
routeSet.PushRoute(new SIPRoute(sipCallDescriptor.RouteSet, true));
logger.LogDebug("Route set for call " + routeSet.ToString() + ".");
//lookupResult = m_sipTransport.GetURIEndPoint(routeSet.TopRoute.URI, false);
lookupResult = await m_sipTransport.ResolveSIPUriAsync(routeSet.TopRoute.URI).ConfigureAwait(false);
}
else
{
logger.LogDebug("SIPClientUserAgent attempting to resolve " + callURI.Host + ".");
//lookupResult = m_sipTransport.GetURIEndPoint(callURI, false);
DateTime lookupStartedAt = DateTime.Now;
lookupResult = await m_sipTransport.ResolveSIPUriAsync(callURI).ConfigureAwait(false);
lookupDurationMilliseconds = DateTime.Now.Subtract(lookupStartedAt).TotalMilliseconds;
}
if (lookupResult == null)
{
logger.LogDebug($"SIPClientUserAgent DNS failure resolving {callURI.Host} in {lookupDurationMilliseconds:0.##}ms. Call cannot proceed.");
}
else
{
logger.LogDebug($"SIPClientUserAgent resolved {callURI.Host} to {lookupResult} in {lookupDurationMilliseconds:0.##}ms.");
serverEndPoint = lookupResult;
}
}
return(serverEndPoint);
}
/// <summary>
/// Sends the SIP INVITE probe request.
/// </summary>
public void SendProbe()
{
try
{
if (WorkerProcess == null)
{
logger.Debug("When attempting to send probe the worker process was null. Marking for immediate restart.");
NeedsImmediateRestart = true;
}
else if (WorkerProcess.HasExited)
{
logger.Debug("When attempting to send probe the worker had exited. Marking for immediate restart.");
NeedsImmediateRestart = true;
}
else if (m_probeUAC != null && !m_probeUAC.IsUACAnswered)
{
// A probe call has timed out.
m_probeUAC.Cancel();
m_missedProbes++;
if (m_missedProbes >= m_missedProbesLimit)
{
logger.Warn(m_missedProbes + " probes missed for " + AppServerEndpoint.ToString() + ". Marking for immediate restart.");
NeedsImmediateRestart = true;
}
}
if(!NeedsImmediateRestart && !NeedsToRestart)
{
m_probeCount++;
//logger.Debug("Sending probe " + m_probeCount + " to " + AppServerEndpoint.GetIPEndPoint().ToString() + ".");
DateTime probeSentAt = DateTime.Now;
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(m_dispatcherUsername, null, "sip:" + m_dispatcherUsername + "@" + AppServerEndpoint.GetIPEndPoint().ToString(),
"sip:" + m_dispatcherUsername + "@sipcalldispatcher", "sip:" + AppServerEndpoint.GetIPEndPoint().ToString(), null, null, null, SIPCallDirection.Out, null, null, null);
m_probeUAC = new SIPClientUserAgent(m_sipTransport, null, null, null, null);
m_probeUAC.CallAnswered += (call, sipResponse) =>
{
//logger.Debug("Probe response received for " + AppServerEndpoint.ToString() + ".");
if (sipResponse.Status != SIPResponseStatusCodesEnum.BadExtension)
//if (sipResponse.Status != SIPResponseStatusCodesEnum.InternalServerError)
{
logger.Warn("Probe to " + AppServerEndpoint.ToString() + " answered incorrectly on probe number " + m_probeCount + " after "
+ DateTime.Now.Subtract(probeSentAt).TotalSeconds.ToString("0.##") + "s, unexpected response of " + ((int)sipResponse.StatusCode) + ".");
NeedsImmediateRestart = true;
}
else
{
m_gotInitialProbeResponse = true;
}
if (m_initialResponseMRE != null)
{
m_initialResponseMRE.Set();
}
};
m_probeUAC.Call(callDescriptor);
}
}
catch (Exception excp)
{
logger.Error("Exception SendProbe. " + excp.Message);
}
}
/// <summary>
/// Sends the SIP INVITE probe request.
/// </summary>
private void ProbeWorker(SIPAppServerWorker worker, bool isInitialProbe)
{
try
{
if (isInitialProbe)
{
worker.InitialProbeCount++;
}
int workerProcessID = worker.WorkerProcess.Id;
SIPEndPoint workerEndPoint = worker.AppServerEndpoint;
DateTime probeSentAt = DateTime.Now;
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(m_dispatcherUsername, null, "sip:" + m_dispatcherUsername + "@" + workerEndPoint.GetIPEndPoint().ToString(),
"sip:" + m_dispatcherUsername + "@sipcalldispatcher", "sip:" + workerEndPoint.GetIPEndPoint().ToString(), null, null, null, SIPCallDirection.Out, null, null, null);
SIPClientUserAgent uac = new SIPClientUserAgent(m_sipTransport, null, null, null, null);
uac.CallFailed += (failedUAC, errorMessage) =>
{
AppServerCallFailed(failedUAC, errorMessage, workerProcessID, probeSentAt, isInitialProbe);
};
uac.CallAnswered += (call, sipResponse) =>
{
if (sipResponse.Status != SIPResponseStatusCodesEnum.BadExtension)
{
//logger.Warn("Probe call answered with unexpected response code of " + sipResponse.StatusCode + ".");
AppServerCallFailed(call, "Unexpected response of " + ((int)sipResponse.StatusCode) + " on probe call.", workerProcessID, probeSentAt, isInitialProbe);
}
else
{
AppServerCallSucceeded(call);
}
};
uac.Call(callDescriptor);
}
catch (Exception excp)
{
logger.Error("Exception SIPAppServerManager ProberWorker. " + excp.Message);
}
}
//private void ByeFinalResponseReceived(IPEndPoint localEndPoint, IPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPResponse sipResponse)
//{
// Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "BYE response " + sipResponse.StatusCode + " " + sipResponse.ReasonPhrase + ".", Owner));
//}
private SIPRequest GetInviteRequest(SIPCallDescriptor sipCallDescriptor, string branchId, string callId, SIPEndPoint localSIPEndPoint, SIPRouteSet routeSet, string content, string contentType)
{
SIPRequest inviteRequest = new SIPRequest(SIPMethodsEnum.INVITE, sipCallDescriptor.Uri);
inviteRequest.LocalSIPEndPoint = localSIPEndPoint;
SIPHeader inviteHeader = new SIPHeader(sipCallDescriptor.GetFromHeader(), SIPToHeader.ParseToHeader(sipCallDescriptor.To), 1, callId);
inviteHeader.From.FromTag = CallProperties.CreateNewTag();
// For incoming calls forwarded via the dial plan the username needs to go into the Contact header.
inviteHeader.Contact = new List<SIPContactHeader>() { new SIPContactHeader(null, new SIPURI(inviteRequest.URI.Scheme, localSIPEndPoint)) };
inviteHeader.Contact[0].ContactURI.User = sipCallDescriptor.Username;
inviteHeader.CSeqMethod = SIPMethodsEnum.INVITE;
inviteHeader.UserAgent = m_userAgent;
inviteHeader.Routes = routeSet;
inviteRequest.Header = inviteHeader;
if (!sipCallDescriptor.ProxySendFrom.IsNullOrBlank())
{
inviteHeader.ProxySendFrom = sipCallDescriptor.ProxySendFrom;
}
SIPViaHeader viaHeader = new SIPViaHeader(localSIPEndPoint, branchId);
inviteRequest.Header.Vias.PushViaHeader(viaHeader);
inviteRequest.Body = content;
inviteRequest.Header.ContentLength = (inviteRequest.Body != null) ? inviteRequest.Body.Length : 0;
inviteRequest.Header.ContentType = contentType;
// Add custom switchboard headers.
if (CallDescriptor.SwitchboardHeaders != null)
{
inviteHeader.SwitchboardOriginalCallID = CallDescriptor.SwitchboardHeaders.SwitchboardOriginalCallID;
//inviteHeader.SwitchboardCallerDescription = CallDescriptor.SwitchboardHeaders.SwitchboardCallerDescription;
inviteHeader.SwitchboardLineName = CallDescriptor.SwitchboardHeaders.SwitchboardLineName;
//inviteHeader.SwitchboardOwner = CallDescriptor.SwitchboardHeaders.SwitchboardOwner;
//inviteHeader.SwitchboardOriginalFrom = CallDescriptor.SwitchboardHeaders.SwitchboardOriginalFrom;
}
// Add custom CRM headers.
if (CallDescriptor.CRMHeaders != null)
{
inviteHeader.CRMPersonName = CallDescriptor.CRMHeaders.PersonName;
inviteHeader.CRMCompanyName = CallDescriptor.CRMHeaders.CompanyName;
inviteHeader.CRMPictureURL = CallDescriptor.CRMHeaders.AvatarURL;
}
try
{
if (sipCallDescriptor.CustomHeaders != null && sipCallDescriptor.CustomHeaders.Count > 0)
{
foreach (string customHeader in sipCallDescriptor.CustomHeaders)
{
if (customHeader.IsNullOrBlank())
{
continue;
}
else if (customHeader.Trim().StartsWith(SIPHeaders.SIP_HEADER_USERAGENT))
{
inviteRequest.Header.UserAgent = customHeader.Substring(customHeader.IndexOf(":") + 1).Trim();
}
else
{
inviteRequest.Header.UnknownHeaders.Add(customHeader);
}
}
}
}
catch (Exception excp)
{
logger.Error("Exception Parsing CustomHeader for GetInviteRequest. " + excp.Message + sipCallDescriptor.CustomHeaders);
}
return inviteRequest;
}
public void Call(SIPCallDescriptor sipCallDescriptor)
{
try
{
m_sipCallDescriptor = sipCallDescriptor;
SIPURI callURI = SIPURI.ParseSIPURI(sipCallDescriptor.Uri);
SIPRouteSet routeSet = null;
if (!m_callCancelled)
{
// If the outbound proxy is a loopback address, as it will normally be for local deployments, then it cannot be overriden.
if (m_outboundProxy != null && IPAddress.IsLoopback(m_outboundProxy.Address))
{
m_serverEndPoint = m_outboundProxy;
}
else if (!sipCallDescriptor.ProxySendFrom.IsNullOrBlank())
{
// If the binding has a specific proxy end point sent then the request needs to be forwarded to the proxy's default end point for it to take care of.
SIPEndPoint outboundProxyEndPoint = SIPEndPoint.ParseSIPEndPoint(sipCallDescriptor.ProxySendFrom);
m_outboundProxy = new SIPEndPoint(SIPProtocolsEnum.udp, new IPEndPoint(outboundProxyEndPoint.Address, m_defaultSIPPort));
m_serverEndPoint = m_outboundProxy;
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "SIPClientUserAgent Call using alternate outbound proxy of " + m_outboundProxy + ".", Owner));
}
else if (m_outboundProxy != null)
{
// Using the system outbound proxy only, no additional user routing requirements.
m_serverEndPoint = m_outboundProxy;
}
// A custom route set may have been specified for the call.
if (m_sipCallDescriptor.RouteSet != null && m_sipCallDescriptor.RouteSet.IndexOf(OUTBOUNDPROXY_AS_ROUTESET_CHAR) != -1)
{
try
{
routeSet = new SIPRouteSet();
routeSet.PushRoute(new SIPRoute(m_sipCallDescriptor.RouteSet, true));
}
catch
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Error an outbound proxy value was not recognised in SIPClientUserAgent Call. " + m_sipCallDescriptor.RouteSet + ".", Owner));
}
}
// No outbound proxy, determine the forward destination based on the SIP request.
if (m_serverEndPoint == null)
{
SIPDNSLookupResult lookupResult = null;
if (routeSet == null || routeSet.Length == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Attempting to resolve " + callURI.Host + ".", Owner));
lookupResult = m_sipTransport.GetURIEndPoint(callURI, false);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Route set for call " + routeSet.ToString() + ".", Owner));
lookupResult = m_sipTransport.GetURIEndPoint(routeSet.TopRoute.URI, false);
}
if (lookupResult.LookupError != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "DNS error resolving " + callURI.Host + ", " + lookupResult.LookupError + ". Call cannot proceed.", Owner));
}
else
{
m_serverEndPoint = lookupResult.GetSIPEndPoint();
}
}
if (m_callCancelled)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Call was cancelled during DNS resolution of " + callURI.Host, Owner));
FireCallFailed(this, "Cancelled by caller");
}
else if (m_serverEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Switching to " + SIPURI.ParseSIPURI(m_sipCallDescriptor.Uri).CanonicalAddress + " via " + m_serverEndPoint + ".", Owner));
m_localSIPEndPoint = m_sipTransport.GetDefaultSIPEndPoint(m_serverEndPoint);
if (m_localSIPEndPoint == null)
{
throw new ApplicationException("The call could not locate an appropriate SIP transport channel for protocol " + callURI.Protocol + ".");
}
string content = sipCallDescriptor.Content;
if (content.IsNullOrBlank())
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Body on UAC call was empty.", Owner));
}
else if (m_sipCallDescriptor.ContentType == m_sdpContentType)
{
if (!m_sipCallDescriptor.MangleResponseSDP)
{
IPEndPoint sdpEndPoint = SDP.GetSDPRTPEndPoint(content);
if (sdpEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call was set to NOT mangle, RTP socket " + sdpEndPoint.ToString() + ".", Owner));
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call was set to NOT mangle, RTP socket could not be determined.", Owner));
}
}
else
{
IPEndPoint sdpEndPoint = SDP.GetSDPRTPEndPoint(content);
if (sdpEndPoint != null)
{
if (!IPSocket.IsPrivateAddress(sdpEndPoint.Address.ToString()))
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call had public IP not mangled, RTP socket " + sdpEndPoint.ToString() + ".", Owner));
}
else
{
bool wasSDPMangled = false;
if (sipCallDescriptor.MangleIPAddress != null)
{
if (sdpEndPoint != null)
{
content = SIPPacketMangler.MangleSDP(content, sipCallDescriptor.MangleIPAddress.ToString(), out wasSDPMangled);
}
}
if (wasSDPMangled)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC call had RTP socket mangled from " + sdpEndPoint.ToString() + " to " + sipCallDescriptor.MangleIPAddress.ToString() + ":" + sdpEndPoint.Port + ".", Owner));
}
else if (sdpEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on UAC could not be mangled, using original RTP socket of " + sdpEndPoint.ToString() + ".", Owner));
}
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP RTP socket on UAC call could not be determined.", Owner));
}
}
}
SIPRequest switchServerInvite = GetInviteRequest(m_sipCallDescriptor, CallProperties.CreateBranchId(), CallProperties.CreateNewCallId(), m_localSIPEndPoint, routeSet, content, sipCallDescriptor.ContentType);
// Now that we have a destination socket create a new UAC transaction for forwarded leg of the call.
m_serverTransaction = m_sipTransport.CreateUACTransaction(switchServerInvite, m_serverEndPoint, m_localSIPEndPoint, m_outboundProxy);
m_serverTransaction.CDR.DialPlanContextID = m_sipCallDescriptor.DialPlanContextID;
#region Real-time call control processing.
string rtccError = null;
if (m_serverTransaction.CDR != null)
{
m_serverTransaction.CDR.Owner = Owner;
m_serverTransaction.CDR.AdminMemberId = AdminMemberId;
m_serverTransaction.CDR.Updated();
#if !SILVERLIGHT && !MIN_BUILD
if (m_sipCallDescriptor.AccountCode != null)
{
var customerAccount = m_customerAccountDataLayer.CheckAccountCode(Owner, m_sipCallDescriptor.AccountCode);
if (customerAccount == null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "A billable call could not proceed as no account exists for account code or number " + m_sipCallDescriptor.AccountCode + ".", Owner));
rtccLogger.Debug("A billable call could not proceed as no account exists for account code or number " + m_sipCallDescriptor.AccountCode + " and owner " + Owner + ".");
rtccError = "Real-time call control invalid account code";
}
else
{
AccountCode = customerAccount.AccountCode;
string rateDestination = m_sipCallDescriptor.Uri;
if (SIPURI.TryParse(m_sipCallDescriptor.Uri))
{
rateDestination = SIPURI.ParseSIPURIRelaxed(m_sipCallDescriptor.Uri).User;
}
var rate = m_customerAccountDataLayer.GetRate(Owner, m_sipCallDescriptor.RateCode, rateDestination, customerAccount.RatePlan);
if (rate == null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "A billable call could not proceed as no rate could be determined for destination " + rateDestination + ".", Owner));
rtccLogger.Debug("A billable call could not proceed as no rate could be determined for destination " + rateDestination + " and owner " + Owner + ".");
rtccError = "Real-time call control no rate";
}
else
{
Rate = rate.Rate1;
if (rate.Rate1 == 0 && rate.SetupCost == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "The rate and setup cost for the " + rateDestination + "were both zero. The call will be allowed to proceed with no RTCC reservation.", Owner));
}
else
{
decimal balance = m_customerAccountDataLayer.GetBalance(AccountCode);
if (balance < Rate)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "A billable call could not proceed as the available credit for " + AccountCode + " was not sufficient for 60 seconds to destination " + rateDestination + ".", Owner));
rtccLogger.Debug("A billable call could not proceed as the available credit for " + AccountCode + " was not sufficient for 60 seconds to destination " + rateDestination + " and owner " + Owner + ".");
rtccError = "Real-time call control insufficient credit";
}
else
{
int intialSeconds = 0;
var reservationCost = m_customerAccountDataLayer.ReserveInitialCredit(AccountCode, rate, m_serverTransaction.CDR, out intialSeconds);
if (reservationCost == Decimal.MinusOne)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Call will not proceed as the intial real-time call control credit reservation failed.", Owner));
rtccLogger.Debug("Call will not proceed as the intial real-time call control credit reservation failed for owner " + Owner + ".");
rtccError = "Real-time call control initial reservation failed";
}
else
{
ReservedCredit = reservationCost;
ReservedSeconds = intialSeconds;
}
}
}
}
}
}
#endif
}
// If this is a billable call attempt to reserve the first chunk of credit.
//if (m_serverTransaction.CDR != null && AccountCode.NotNullOrBlank())
//{
// m_serverTransaction.CDR.AccountCode = AccountCode;
// m_serverTransaction.CDR.Rate = Rate;
// //m_serverTransaction.CDR.Cost = ReservedCredit;
// //m_serverTransaction.CDR.SecondsReserved = ReservedSeconds;
// var reservationCost = m_customerAccountDataLayer.ReserveInitialCredit(AccountCode, Rate, m_rtccInitialReservationSeconds);
// if (reservationCost == Decimal.MinusOne)
// {
// Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Call will not proceed as the intial real-time call control credit reservation failed.", Owner));
// }
// else
// {
// m_serverTransaction.CDR.SecondsReserved = m_rtccInitialReservationSeconds;
// m_serverTransaction.CDR.Cost = reservationCost;
// }
//}
#endregion
if (rtccError == null)
{
m_serverTransaction.UACInviteTransactionInformationResponseReceived += ServerInformationResponseReceived;
m_serverTransaction.UACInviteTransactionFinalResponseReceived += ServerFinalResponseReceived;
m_serverTransaction.UACInviteTransactionTimedOut += ServerTimedOut;
m_serverTransaction.TransactionTraceMessage += TransactionTraceMessage;
m_serverTransaction.SendInviteRequest(m_serverEndPoint, m_serverTransaction.TransactionRequest);
}
else
{
m_serverTransaction.CancelCall(rtccError);
FireCallFailed(this, rtccError);
}
}
else
{
if (routeSet == null || routeSet.Length == 0)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Forward leg failed, could not resolve URI host " + callURI.Host, Owner));
m_serverTransaction.CancelCall("Unresolvable destination " + callURI.Host);
FireCallFailed(this, "unresolvable destination " + callURI.Host);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Forward leg failed, could not resolve top Route host " + routeSet.TopRoute.Host, Owner));
m_serverTransaction.CancelCall("Unresolvable destination " + routeSet.TopRoute.Host);
FireCallFailed(this, "unresolvable destination " + routeSet.TopRoute.Host);
}
}
}
}
catch (ApplicationException appExcp)
{
if (m_serverTransaction != null)
{
m_serverTransaction.CancelCall(appExcp.Message);
}
FireCallFailed(this, appExcp.Message);
}
catch (Exception excp)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.UserAgentClient, SIPMonitorEventTypesEnum.DialPlan, "Exception UserAgentClient Call. " + excp.Message, Owner));
if (m_serverTransaction != null)
{
m_serverTransaction.CancelCall("Unknown exception");
}
FireCallFailed(this, excp.Message);
}
}
private void StartNewCallSync(SIPCallDescriptor callDescriptor)
{
try
{
// A call will not be delayed if there are no other calls being attempted.
if (callDescriptor.DelaySeconds != 0 && m_switchCalls.Count > 0)
{
callDescriptor.DelayMRE = new ManualResetEvent(false);
lock (m_delayedCalls)
{
m_delayedCalls.Add(callDescriptor);
}
int delaySeconds = (callDescriptor.DelaySeconds > MAX_DELAY_SECONDS) ? MAX_DELAY_SECONDS : callDescriptor.DelaySeconds;
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Delaying call leg to " + callDescriptor.Uri + " by " + delaySeconds + "s.", m_username));
callDescriptor.DelayMRE.WaitOne(delaySeconds * 1000);
}
lock (m_delayedCalls)
{
m_delayedCalls.Remove(callDescriptor);
}
if (!m_callAnswered && !m_commandCancelled)
{
ISIPClientUserAgent uacCall = null;
if (callDescriptor.ToSIPAccount == null)
{
if (callDescriptor.IsGoogleVoiceCall)
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Creating Google Voice user agent for " + callDescriptor.Uri + ".", m_username));
uacCall = new GoogleVoiceUserAgent(m_sipTransport, m_callManager, m_statefulProxyLogEvent, m_username, m_adminMemberId, m_outboundProxySocket);
}
else
{
uacCall = new SIPClientUserAgent(m_sipTransport, m_outboundProxySocket, m_username, m_adminMemberId, m_statefulProxyLogEvent);
}
}
else
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Creating B2B call for " + callDescriptor.Uri + ".", m_username));
uacCall = new SIPB2BUserAgent(m_statefulProxyLogEvent, QueueNewCall_External, m_sipTransport, m_username, m_adminMemberId);
}
//ISIPClientUserAgent uacCall = new JingleUserAgent(m_username, m_adminMemberId, m_statefulProxyLogEvent);
lock (m_switchCalls)
{
m_switchCalls.Add(uacCall);
}
uacCall.CallAnswered += UACCallAnswered;
uacCall.CallFailed += UACCallFailed;
uacCall.CallRinging += UACCallProgress;
//uacCall.CallTrying += UACCallTrying;
uacCall.Call(callDescriptor);
}
}
catch (Exception excp)
{
logger.Error("Exception ForkCall StartNewCall. " + excp.Message);
}
}
public void Call(SIPCallDescriptor sipCallDescriptor)
{
try
{
m_uacCallDescriptor = sipCallDescriptor;
SIPRequest uacInviteRequest = GetInviteRequest(m_uacCallDescriptor.Uri, sipCallDescriptor.GetFromHeader());
if (sipCallDescriptor.MangleResponseSDP && sipCallDescriptor.MangleIPAddress != null)
{
uacInviteRequest.Header.ProxyReceivedFrom = sipCallDescriptor.MangleIPAddress.ToString();
}
uacInviteRequest.Body = sipCallDescriptor.Content;
uacInviteRequest.Header.ContentType = sipCallDescriptor.ContentType;
uacInviteRequest.LocalSIPEndPoint = m_blackhole;
uacInviteRequest.RemoteSIPEndPoint = m_blackhole;
// Now that we have a destination socket create a new UAC transaction for forwarded leg of the call.
m_uacTransaction = m_sipTransport.CreateUACTransaction(uacInviteRequest, m_blackhole, m_blackhole, null);
if (m_uacTransaction.CDR != null)
{
m_uacTransaction.CDR.Owner = m_uacOwner;
m_uacTransaction.CDR.AdminMemberId = m_uacAdminMemberId;
}
//uacTransaction.UACInviteTransactionInformationResponseReceived += ServerInformationResponseReceived;
//uacTransaction.UACInviteTransactionFinalResponseReceived += ServerFinalResponseReceived;
//uacTransaction.UACInviteTransactionTimedOut += ServerTimedOut;
//uacTransaction.TransactionTraceMessage += TransactionTraceMessage;
m_uacTransaction.SendInviteRequest(m_blackhole, m_uacTransaction.TransactionRequest);
SIPRequest uasInviteRequest = uacInviteRequest.Copy();
uasInviteRequest.LocalSIPEndPoint = m_blackhole;
uasInviteRequest.RemoteSIPEndPoint = m_blackhole;
uasInviteRequest.Header.Vias.TopViaHeader.Branch = CallProperties.CreateBranchId();
m_uasTransaction = m_sipTransport.CreateUASTransaction(uasInviteRequest, m_blackhole, m_blackhole, null);
SetOwner(sipCallDescriptor.ToSIPAccount.Owner, sipCallDescriptor.ToSIPAccount.AdminMemberId);
//m_uasTransaction.TransactionTraceMessage += TransactionTraceMessage;
//m_uasTransaction.UASInviteTransactionTimedOut += ClientTimedOut;
//m_uasTransaction.UASInviteTransactionCancelled += (t) => { };
QueueNewCall_External(this);
}
catch (Exception excp)
{
logger.Error("Exception SIPB2BUserAgent Call. " + excp.Message);
}
}
public SIPCallDescriptor CopyOf()
{
List<string> copiedCustomHeaders = null;
if (CustomHeaders != null)
{
copiedCustomHeaders = new List<string>();
copiedCustomHeaders.InsertRange(0, CustomHeaders);
}
SIPCallDescriptor copy = new SIPCallDescriptor(
Username,
Password,
Uri,
From,
To,
RouteSet,
copiedCustomHeaders,
AuthUsername,
CallDirection,
ContentType,
Content,
(MangleIPAddress != null) ? new IPAddress(MangleIPAddress.GetAddressBytes()) : null);
// Options.
copy.DelaySeconds = DelaySeconds;
copy.RedirectMode = RedirectMode;
copy.CallDurationLimit = CallDurationLimit;
copy.MangleResponseSDP = MangleResponseSDP;
copy.FromDisplayName = FromDisplayName;
copy.FromURIUsername = FromURIUsername;
copy.FromURIHost = FromURIHost;
copy.TransferMode = TransferMode;
copy.ToSIPAccount = ToSIPAccount;
return copy;
}
private void ProbeWorkers() {
try {
while (!m_exit) {
try {
SIPEndPoint activeWorkerEndPoint = GetFirstHealthyEndPoint();
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(m_dispatcherUsername, null, "sip:" + m_dispatcherUsername + "@" + activeWorkerEndPoint.SocketEndPoint.ToString(),
"sip:" + m_dispatcherUsername + "@sipcalldispatcher", "sip:" + activeWorkerEndPoint.SocketEndPoint.ToString(), null, null, null, SIPCallDirection.Out, null, null, null);
SIPClientUserAgent uac = new SIPClientUserAgent(m_sipTransport, null, null, null, null);
uac.CallAnswered += DispatcherCallAnswered;
uac.CallFailed += new SIPCallFailedDelegate(DispatcherCallFailed);
uac.Call(callDescriptor);
}
catch (Exception probeExcp) {
dispatcherLogger.Error("Exception SIPCallDispatcher Sending Probe. " + probeExcp.Message);
}
Thread.Sleep(PROBE_WORKER_CALL_PERIOD);
}
}
catch (Exception excp) {
logger.Error("Exception SIPCallDispatcher ProberWorkers. " + excp.Message);
}
}
/// <summary>
/// Initiates the call to the remote user agent server.
/// </summary>
/// <param name="sipCallDescriptor">The descriptor for the call that describes how to reach the user agent server and other properties.</param>
/// <param name="serverEndPoint">Optional. If the server end point for the call is known or has been resolved in advance. If
/// not set the SIP transport layer will attempt to resolve the destination at sending time.</param>
public SIPRequest Call(SIPCallDescriptor sipCallDescriptor, SIPEndPoint serverEndPoint)
{
try
{
m_sipCallDescriptor = sipCallDescriptor;
SIPURI callURI = SIPURI.ParseSIPURI(sipCallDescriptor.Uri);
SIPRouteSet routeSet = null;
logger.LogDebug($"UAC commencing call to {SIPURI.ParseSIPURI(m_sipCallDescriptor.Uri).CanonicalAddress}.");
// A custom route set may have been specified for the call.
if (m_sipCallDescriptor.RouteSet != null && m_sipCallDescriptor.RouteSet.IndexOf(OUTBOUNDPROXY_AS_ROUTESET_CHAR) != -1)
{
try
{
routeSet = new SIPRouteSet();
routeSet.PushRoute(new SIPRoute(m_sipCallDescriptor.RouteSet, true));
}
catch
{
logger.LogDebug("Error an outbound proxy value was not recognised in SIPClientUserAgent Call. " + m_sipCallDescriptor.RouteSet + ".");
}
}
string content = sipCallDescriptor.Content;
if (content.IsNullOrBlank())
{
logger.LogDebug("Body on UAC call was empty.");
}
if (this.m_sipCallDescriptor.BranchId.IsNullOrBlank())
{
this.m_sipCallDescriptor.BranchId = CallProperties.CreateBranchId();
}
if (this.m_sipCallDescriptor.CallId.IsNullOrBlank())
{
this.m_sipCallDescriptor.CallId = CallProperties.CreateNewCallId();
}
SIPRequest inviteRequest = GetInviteRequest(m_sipCallDescriptor, m_sipCallDescriptor.BranchId, m_sipCallDescriptor.CallId, routeSet, content, sipCallDescriptor.ContentType);
// Now that we have a destination socket create a new UAC transaction for forwarded leg of the call.
m_serverTransaction = new UACInviteTransaction(m_sipTransport, inviteRequest, m_outboundProxy);
m_serverTransaction.UACInviteTransactionInformationResponseReceived += ServerInformationResponseReceived;
m_serverTransaction.UACInviteTransactionFinalResponseReceived += ServerFinalResponseReceived;
m_serverTransaction.UACInviteTransactionFailed += ServerTransactionFailed;
m_serverTransaction.SendInviteRequest();
return(inviteRequest);
}
catch (ApplicationException appExcp)
{
m_serverTransaction?.CancelCall(appExcp.Message);
CallFailed?.Invoke(this, appExcp.Message, null);
return(null);
}
catch (Exception excp)
{
logger.LogError("Exception UserAgentClient Call. " + excp);
m_serverTransaction?.CancelCall("Unknown exception");
CallFailed?.Invoke(this, excp.Message, null);
return(null);
}
}
/// <summary>
/// Places an outgoing SIP call.
/// </summary>
/// <param name="destination">The SIP URI to place a call to. The destination can be a full SIP URI in which case the all will
/// be placed anonymously directly to that URI. Alternatively it can be just the user portion of a URI in which case it will
/// be sent to the configured SIP server.</param>
public void Call(MediaManager mediaManager, string destination)
{
_mediaManager = mediaManager;
_mediaManager.NewCall();
// Determine if this is a direct anonymous call or whether it should be placed using the pre-configured SIP server account.
SIPURI callURI = null;
string sipUsername = null;
string sipPassword = null;
string fromHeader = null;
if (destination.Contains("@") || m_sipServer == null)
{
// Anonymous call direct to SIP server specified in the URI.
callURI = SIPURI.ParseSIPURIRelaxed(destination);
}
else
{
// This call will use the pre-configured SIP account.
callURI = SIPURI.ParseSIPURIRelaxed(destination + "@" + m_sipServer);
sipUsername = m_sipUsername;
sipPassword = m_sipPassword;
fromHeader = (new SIPFromHeader(m_sipFromName, new SIPURI(m_sipUsername, m_sipServer, null), null)).ToString();
}
StatusMessage("Starting call to " + callURI.ToString() + ".");
m_uac = new SIPClientUserAgent(m_sipTransport, null, null, null, null);
m_uac.CallTrying += CallTrying;
m_uac.CallRinging += CallRinging;
m_uac.CallAnswered += CallAnswered;
m_uac.CallFailed += CallFailed;
// Get the SDP requesting that the public IP address be used if the host on the call destination is not a private IP address.
SDP sdp = _mediaManager.GetSDP(!(IPSocket.IsIPAddress(callURI.Host) && IPSocket.IsPrivateAddress(callURI.Host)));
System.Diagnostics.Debug.WriteLine(sdp.ToString());
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(sipUsername, sipPassword, callURI.ToString(), fromHeader, null, null, null, null, SIPCallDirection.Out, _sdpMimeContentType, sdp.ToString(), null);
m_uac.Call(callDescriptor);
}
public void Call(SIPCallDescriptor descriptor)
{
try
{
CallDescriptor = descriptor;
SIPURI destinationURI = SIPURI.ParseSIPURIRelaxed(descriptor.Uri);
bool wasSDPMangled = false;
IPEndPoint sdpEndPoint = null;
if (descriptor.MangleIPAddress != null)
{
sdpEndPoint = SDP.GetSDPRTPEndPoint(descriptor.Content);
if (sdpEndPoint != null)
{
descriptor.Content = SIPPacketMangler.MangleSDP(descriptor.Content, descriptor.MangleIPAddress.ToString(), out wasSDPMangled);
}
}
if (wasSDPMangled)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on Google Voice call had RTP socket mangled from " + sdpEndPoint.ToString() + " to " + descriptor.MangleIPAddress.ToString() + ":" + sdpEndPoint.Port + ".", Owner));
}
else if (sdpEndPoint != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "SDP on Google Voice call could not be mangled, using original RTP socket of " + sdpEndPoint.ToString() + ".", Owner));
}
SIPDialogue = m_googleVoiceCall.InitiateCall(descriptor.Username, descriptor.Password, descriptor.CallbackNumber, destinationURI.User, descriptor.CallbackPattern, descriptor.CallbackPhoneType, MAX_CALLBACK_WAIT_TIME, descriptor.ContentType, descriptor.Content);
if (SIPDialogue != null)
{
CallAnswered(this, null);
}
else
{
CallFailed(this, "Google Voice call failed.");
}
}
catch (Exception excp)
{
logger.Error("Exception GoogleVoiceCallAgent Call. " + excp.Message);
CallFailed(this, excp.Message);
}
}
/// <summary>
/// Builds the call list based on the original dial plan SwitchCall format. This will result in only a single call leg with a single forward
/// destination. Examples of the dial string in a dial plan command are:
///
/// exten = number,priority,Switch(username,password,new number[,From[,SendTo[,Trace]]])
/// or
/// sys.Dial("username,password,${dst}@provider")
/// </summary>
private SIPCallDescriptor ParseAsteriskDialString(string data, SIPRequest sipRequest)
{
try
{
string username = null;
string password = null;
string sendToSocket = null;
bool traceReqd = false;
string forwardURIStr = null;
string fromHeaderStr = null;
SIPURI forwardURI = null;
string[] dataFields = data.Split(new char[] { ',' });
username = dataFields[0].Trim().Trim(new char[] { '"', '\'' });
password = dataFields[1].Trim().Trim(new char[] { '"', '\'' });
forwardURIStr = dataFields[2].Trim().Trim(new char[] { '"', '\'' });
if (dataFields.Length > 3 && dataFields[3] != null)
{
fromHeaderStr = dataFields[3].Trim();
}
if (dataFields.Length > 4 && dataFields[4] != null)
{
sendToSocket = dataFields[4].Trim().Trim(new char[] { '"', '\'' });
}
if (dataFields.Length > 5 && dataFields[5] != null)
{
Boolean.TryParse(dataFields[5].Trim(), out traceReqd);
}
forwardURI = SIPURI.ParseSIPURIRelaxed(SubstituteRequestVars(sipRequest, forwardURIStr));
if (forwardURI != null)
{
if (forwardURI.User == null)
{
forwardURI.User = sipRequest.URI.User;
}
SIPFromHeader callFromHeader = ParseFromHeaderOption(fromHeaderStr, sipRequest, username, forwardURI.Host);
string socket = (sendToSocket != null && sendToSocket.Trim().Length > 0) ? sendToSocket : null;
string content = sipRequest.Body;
string remoteUAStr = sipRequest.Header.ProxyReceivedFrom;
SIPEndPoint remoteUAAddress = (!remoteUAStr.IsNullOrBlank()) ? SIPEndPoint.ParseSIPEndPoint(remoteUAStr) : sipRequest.RemoteSIPEndPoint;
SIPCallDescriptor switchCallStruct = new SIPCallDescriptor(username, password, forwardURI.ToString(), callFromHeader.ToString(), forwardURI.ToString(), socket, null, null, SIPCallDirection.Out, sipRequest.Header.ContentType, content, remoteUAAddress.Address);
return switchCallStruct;
}
else
{
logger.Warn("Could not parse SIP URI from " + forwardURIStr + " in ParseAsteriskDialString.");
return null;
}
}
catch (Exception excp)
{
logger.Error("Exception ParseAsteriskDialString. " + excp.Message);
return null;
}
}
public List<SIPCallDescriptor> GetForwardsForRedirect(SIPURI redirectURI, SIPCallDescriptor callDescriptor)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Getting forwards for redirect to " + redirectURI.ToString() + ".", m_username));
List<SIPCallDescriptor> redirectCalls = new List<SIPCallDescriptor>();
string localDomain = GetCanonicalDomain_External(redirectURI.Host, false);
if (localDomain != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Redirect is for local SIP account " + redirectURI.User + " and canonical domain " + localDomain + ", looking up bindings.", m_username));
SIPAccount sipAccount = GetSIPAccount_External(s => s.SIPUsername == redirectURI.User && s.SIPDomain == localDomain);
List<SIPRegistrarBinding> bindings = GetRegistrarBindings_External(b => b.SIPAccountId == sipAccount.Id, null, 0, Int32.MaxValue);
if (bindings != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, bindings.Count + " bindings found for local SIP account " + sipAccount.SIPUsername + "@" + sipAccount.SIPDomain + " when processing redirect.", m_username));
// Build list of registered contacts.
for (int index = 0; index < bindings.Count; index++)
{
SIPRegistrarBinding binding = bindings[index];
SIPURI contactURI = binding.MangledContactSIPURI;
SIPCallDescriptor redirectCallDescriptor = callDescriptor.CopyOf();
redirectCallDescriptor.Uri = contactURI.ToString();
redirectCalls.Add(redirectCallDescriptor);
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "No bindings were found for local SIP account " + sipAccount.SIPUsername + "@" + sipAccount.SIPDomain + " when processing redirect.", m_username));
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Redirect destination " + redirectURI.ToString() + " was determined as an external URI.", m_username));
SIPCallDescriptor redirectCallDescriptor = callDescriptor.CopyOf();
redirectCallDescriptor.Uri = redirectURI.ToString();
redirectCalls.Add(redirectCallDescriptor);
}
return redirectCalls;
}
/// <summary>
/// Processes dial strings using the multi-legged format. Each leg is separated from the proceeding one by the | character and each subsequent leg
/// will only be used if all the forwards in the preceeding one fail. Within each leg the forwards are separated by the & character.
///
/// Example:
/// Dial(123@provider1&provider2|[email protected]|provider4&456@provider5[,trace])
/// </summary>
private Queue<List<SIPCallDescriptor>> ParseScriptDialString(
SIPRequest sipRequest,
string command,
List<string> customHeaders,
string customContentType,
string customContent,
string callersNetworkId,
string fromDisplayName,
string fromUsername,
string fromHost,
CRMHeaders contact)
{
try
{
Queue<List<SIPCallDescriptor>> callsQueue = new Queue<List<SIPCallDescriptor>>();
string[] followonLegs = command.Split(CALLLEG_FOLLOWON_SEPARATOR);
foreach (string followOnLeg in followonLegs)
{
List<SIPCallDescriptor> switchCalls = new List<SIPCallDescriptor>();
string[] callLegs = followOnLeg.Split(CALLLEG_SIMULTANEOUS_SEPARATOR);
foreach (string callLeg in callLegs)
{
if (!callLeg.IsNullOrBlank())
{
// Strip off the options string if present.
string options = null;
string callLegDestination = callLeg;
int optionsStartIndex = callLeg.IndexOf(CALLLEG_OPTIONS_START_CHAR);
int optionsEndIndex = callLeg.IndexOf(CALLLEG_OPTIONS_END_CHAR);
if (optionsStartIndex != -1)
{
callLegDestination = callLeg.Substring(0, optionsStartIndex);
options = callLeg.Substring(optionsStartIndex, optionsEndIndex - optionsStartIndex);
}
// Determine whether the call forward is for a local domain or not.
SIPURI callLegSIPURI = SIPURI.ParseSIPURIRelaxed(SubstituteRequestVars(sipRequest, callLegDestination));
if (callLegSIPURI != null && callLegSIPURI.User == null)
{
callLegSIPURI.User = sipRequest.URI.User;
}
if (callLegSIPURI != null)
{
string localDomain = GetCanonicalDomain_External(callLegSIPURI.Host, false);
if (localDomain != null)
{
SIPAccount calledSIPAccount = GetSIPAccount_External(s => s.SIPUsername == callLegSIPURI.User && s.SIPDomain == localDomain);
if (calledSIPAccount == null && callLegSIPURI.User.Contains("."))
{
// A full lookup failed. Now try a partial lookup if the incoming username is in a dotted domain name format.
string sipUsernameSuffix = callLegSIPURI.User.Substring(callLegSIPURI.User.LastIndexOf(".") + 1);
calledSIPAccount = GetSIPAccount_External(s => s.SIPUsername == sipUsernameSuffix && s.SIPDomain == localDomain);
}
if (calledSIPAccount != null)
{
// An incoming dialplan won't be used if it's invoked from itself.
if (calledSIPAccount.InDialPlanName.IsNullOrBlank() || (m_username == calledSIPAccount.Owner && m_dialPlanName == calledSIPAccount.InDialPlanName))
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Call leg is for local domain looking up bindings for " + callLegSIPURI.User + "@" + localDomain + " for call leg " + callLegDestination + ".", m_username));
switchCalls.AddRange(GetForwardsForLocalLeg(sipRequest, calledSIPAccount, customHeaders, customContentType, customContent, options, callersNetworkId, fromDisplayName, fromUsername, fromHost, contact));
}
else
{
// An incoming call for a SIP account that has an incoming dialplan specified.
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Call leg is for local domain forwarding to incoming dialplan for " + callLegSIPURI.User + "@" + localDomain + ".", m_username));
string sipUsername = (m_sipAccount != null) ? m_sipAccount.SIPUsername : m_username;
string sipDomain = (m_sipAccount != null) ? m_sipAccount.SIPDomain : GetCanonicalDomain_External(SIPDomainManager.DEFAULT_LOCAL_DOMAIN, false);
SIPFromHeader fromHeader = ParseFromHeaderOption(null, sipRequest, sipUsername, sipDomain);
string content = customContent;
string contentType = customContentType;
if (contentType.IsNullOrBlank())
{
contentType = sipRequest.Header.ContentType;
}
if (content.IsNullOrBlank())
{
content = sipRequest.Body;
}
SIPCallDescriptor loopbackCall = new SIPCallDescriptor(calledSIPAccount, callLegSIPURI.ToString(), fromHeader.ToString(), contentType, content);
loopbackCall.SetGeneralFromHeaderFields(fromDisplayName, fromUsername, fromHost);
loopbackCall.MangleIPAddress = (PublicIPAddress != null) ? PublicIPAddress : SIPPacketMangler.GetRequestIPAddress(sipRequest);
loopbackCall.ParseCallOptions(options);
switchCalls.Add(loopbackCall);
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "No sip account could be found for local call leg " + callLeg + ".", m_username));
}
}
else
{
// Construct a call forward for a remote destination.
SIPCallDescriptor sipCallDescriptor = GetForwardsForExternalLeg(sipRequest, callLegSIPURI, customContentType, customContent, fromDisplayName, fromUsername, fromHost, contact);
if (sipCallDescriptor != null)
{
// Add and provided custom headers to those already present in the call descriptor and overwrite if an existing
// header is already present.
if (customHeaders != null && customHeaders.Count > 0)
{
foreach (string customHeader in customHeaders)
{
string customHeaderValue = SubstituteRequestVars(sipRequest, customHeader);
sipCallDescriptor.CustomHeaders.Add(customHeaderValue);
}
}
sipCallDescriptor.ParseCallOptions(options);
switchCalls.Add(sipCallDescriptor);
}
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Could not parse a SIP URI from " + callLeg + " in ParseMultiDialString.", m_username));
}
}
}
// Calls will not be added if the URI is already in the queue!
List<SIPCallDescriptor> callList = new List<SIPCallDescriptor>();
callsQueue.Enqueue(callList);
foreach (SIPCallDescriptor callToAdd in switchCalls)
{
if (!IsURIInQueue(callsQueue, callToAdd.Uri))
{
callList.Add(callToAdd);
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Call leg " + callToAdd.Uri.ToString() + " already added duplicate ignored.", m_username));
}
}
}
return callsQueue;
}
catch (Exception excp)
{
logger.Error("Exception ParseScriptDialString. " + excp.Message);
throw excp;
}
}
public SIPRequest Call(SIPCallDescriptor sipCallDescriptor)
{
return(Call(sipCallDescriptor, null));
}
/// <summary>
/// Creates a list of calls based on the registered contacts for a user registration.
/// </summary>
/// <param name="user"></param>
/// <param name="domain"></param>
/// <param name="from">The From header that will be set on the forwarded call leg.</param>
/// <returns></returns>
public List<SIPCallDescriptor> GetForwardsForLocalLeg(
SIPRequest sipRequest,
SIPAccount sipAccount,
List<string> customHeaders,
string customContentType,
string customContent,
string options,
string callersNetworkId,
string fromDisplayName,
string fromUsername,
string fromHost,
CRMHeaders contact)
{
List<SIPCallDescriptor> localUserSwitchCalls = new List<SIPCallDescriptor>();
try
{
if (sipAccount == null)
{
throw new ApplicationException("Cannot lookup forwards for a null SIP account.");
}
List<SIPRegistrarBinding> bindings = GetRegistrarBindings_External(b => b.SIPAccountId == sipAccount.Id, null, 0, Int32.MaxValue);
if (bindings != null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, bindings.Count + " found for " + sipAccount.SIPUsername + "@" + sipAccount.SIPDomain + ".", m_username));
// Build list of registered contacts.
for (int index = 0; index < bindings.Count; index++)
{
SIPRegistrarBinding binding = bindings[index];
SIPURI contactURI = binding.MangledContactSIPURI;
// Determine the content based on a custom request, caller's network id and whether mangling is required.
string contentType = (sipRequest != null) ? sipRequest.Header.ContentType : null;
string content = (sipRequest != null) ? sipRequest.Body : null;
if (!customContentType.IsNullOrBlank())
{
contentType = customContentType;
}
if (!customContent.IsNullOrBlank())
{
content = customContent;
}
IPAddress publicSDPAddress = PublicIPAddress;
if (publicSDPAddress == null && sipRequest != null)
{
publicSDPAddress = SIPPacketMangler.GetRequestIPAddress(sipRequest);
}
string fromHeader = (sipRequest != null) ? sipRequest.Header.From.ToString() : m_anonymousFromURI;
SIPCallDescriptor switchCall = new SIPCallDescriptor(
null,
null,
contactURI.ToString(),
fromHeader,
new SIPToHeader(null, SIPURI.ParseSIPURIRelaxed(sipAccount.SIPUsername + "@" + sipAccount.SIPDomain), null).ToString(),
null,
customHeaders,
null,
SIPCallDirection.In,
contentType,
content,
publicSDPAddress);
switchCall.CRMHeaders = contact;
// If the binding for the call is a switchboard add the custom switchboard headers.
if (!sipRequest.Header.SwitchboardFrom.IsNullOrBlank())
{
switchCall.SwitchboardHeaders.SwitchboardFrom = sipRequest.Header.SwitchboardFrom;
}
// If the binding has a proxy socket defined set the header to ask the upstream proxy to use it.
if (binding.ProxySIPEndPoint != null)
{
switchCall.ProxySendFrom = binding.ProxySIPEndPoint.ToString();
}
switchCall.ParseCallOptions(options);
if (sipAccount != null && !sipAccount.NetworkId.IsNullOrBlank() && sipAccount.NetworkId == callersNetworkId)
{
switchCall.MangleResponseSDP = false;
}
switchCall.SetGeneralFromHeaderFields(fromDisplayName, fromUsername, fromHost);
localUserSwitchCalls.Add(switchCall);
}
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "No current bindings found for local SIP account " + sipAccount.SIPUsername + "@" + sipAccount.SIPDomain + ".", m_username));
}
return localUserSwitchCalls;
}
catch (Exception excp)
{
logger.Error("Exception GetForwardsForLocalLeg. " + excp);
return localUserSwitchCalls;
}
}
private void PlaceCall(object state)
{
string callURI = (string)state;
/*m_dnsLookupComplete.Reset();
ThreadPool.QueueUserWorkItem(new WaitCallback(DNSLookup), callURI);
if (!m_dnsLookupComplete.WaitOne(DNS_LOOKUP_TIMEOUT)) {
AppendTraceMessage("DNS lookup for " + callURI + " timed out.\n");
ResetToCallStartState();
}
else {*/
AppendTraceMessage("Starting call to " + callURI + ".\n");
m_uac = new SIPClientUserAgent(m_sipTransport, null, null, null, LogTraceMessage);
m_uac.CallTrying += CallTrying;
m_uac.CallRinging += CallRinging;
m_uac.CallAnswered += CallAnswered;
m_uac.CallFailed += CallFailed;
SIPCallDescriptor callDescriptor = new SIPCallDescriptor("anonymous", null, callURI, null, null, null, null, null, SIPCallDirection.Out, null, null, null);
m_uac.Call(callDescriptor);
//}
}
/// <summary>
/// Can't be used for local destinations!
/// </summary>
/// <param name="sipRequest"></param>
/// <param name="command"></param>
/// <returns></returns>
private SIPCallDescriptor GetForwardsForExternalLeg(
SIPRequest sipRequest,
SIPURI callLegURI,
string customContentType,
string customContent,
string fromDisplayName,
string fromUsername,
string fromHost,
CRMHeaders contact)
{
try
{
SIPCallDescriptor sipCallDescriptor = null;
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Attempting to locate a provider for call leg: " + callLegURI.ToString() + ".", m_username));
bool providerFound = false;
string contentType = (sipRequest != null) ? sipRequest.Header.ContentType : null;
string content = (sipRequest != null) ? sipRequest.Body : null;
if (!customContentType.IsNullOrBlank())
{
contentType = customContentType;
}
if (!customContent.IsNullOrBlank())
{
content = customContent;
}
IPAddress publicSDPAddress = PublicIPAddress;
if (publicSDPAddress == null && sipRequest != null)
{
publicSDPAddress = SIPPacketMangler.GetRequestIPAddress(sipRequest);
}
if (m_sipProviders != null)
{
foreach (SIPProvider provider in m_sipProviders)
{
if (callLegURI.Host.ToUpper() == provider.ProviderName.ToUpper())
{
if (provider.ProviderType == ProviderTypes.GoogleVoice)
{
sipCallDescriptor = new SIPCallDescriptor(
provider.ProviderUsername,
provider.ProviderPassword,
callLegURI.User + "@" + provider.ProviderName,
provider.GVCallbackNumber,
provider.GVCallbackPattern,
(provider.GVCallbackType != null) ? (int)provider.GVCallbackType.Value : DEFAULT_GVCALLBACK_TYPE,
content,
contentType);
sipCallDescriptor.CRMHeaders = contact;
providerFound = true;
break;
}
else
{
SIPURI providerURI = SIPURI.ParseSIPURI(provider.ProviderServer);
if (providerURI != null)
{
providerURI.User = callLegURI.User;
if (callLegURI.Parameters.Count > 0)
{
foreach (string parameterName in callLegURI.Parameters.GetKeys())
{
if (!providerURI.Parameters.Has(parameterName))
{
providerURI.Parameters.Set(parameterName, callLegURI.Parameters.Get(parameterName));
}
}
}
if (callLegURI.Headers.Count > 0)
{
foreach (string headerName in callLegURI.Headers.GetKeys())
{
if (!providerURI.Headers.Has(headerName))
{
providerURI.Headers.Set(headerName, callLegURI.Headers.Get(headerName));
}
}
}
SIPFromHeader fromHeader = ParseFromHeaderOption(provider.ProviderFrom, sipRequest, provider.ProviderUsername, providerURI.Host);
sipCallDescriptor = new SIPCallDescriptor(
provider.ProviderUsername,
provider.ProviderPassword,
providerURI.ToString(),
fromHeader.ToString(),
providerURI.ToString(),
null,
SIPCallDescriptor.ParseCustomHeaders(SubstituteRequestVars(sipRequest, provider.CustomHeaders)),
provider.ProviderAuthUsername,
SIPCallDirection.Out,
contentType,
content,
publicSDPAddress);
sipCallDescriptor.CRMHeaders = contact;
if (!provider.ProviderOutboundProxy.IsNullOrBlank())
{
sipCallDescriptor.ProxySendFrom = provider.ProviderOutboundProxy.Trim();
}
providerFound = true;
if (provider.ProviderFrom.IsNullOrBlank())
{
// If there is already a custom From header set on the provider that overrides the general settings.
sipCallDescriptor.SetGeneralFromHeaderFields(fromDisplayName, fromUsername, fromHost);
}
break;
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Could not parse SIP URI from Provider Server " + provider.ProviderServer + " in GetForwardsForExternalLeg.", m_username));
}
}
}
}
}
if (!providerFound)
{
// Treat as an anonymous SIP URI.
// Copy the From header so the tag can be removed before adding to the forwarded request.
string fromHeaderStr = (sipRequest != null) ? sipRequest.Header.From.ToString() : m_anonymousFromURI;
SIPFromHeader forwardedFromHeader = SIPFromHeader.ParseFromHeader(fromHeaderStr);
forwardedFromHeader.FromTag = null;
sipCallDescriptor = new SIPCallDescriptor(
m_anonymousUsername,
null,
callLegURI.ToString(),
forwardedFromHeader.ToString(),
callLegURI.ToString(),
null,
null,
null,
SIPCallDirection.Out,
contentType,
content,
publicSDPAddress);
sipCallDescriptor.CRMHeaders = contact;
sipCallDescriptor.SetGeneralFromHeaderFields(fromDisplayName, fromUsername, fromHost);
}
return sipCallDescriptor;
}
catch (Exception excp)
{
logger.Error("Exception GetForwardsForExternalLeg. " + excp.Message);
return null;
}
}
private void ProbeWorkers()
{
try
{
while (!m_exit)
{
Thread.Sleep(PROBE_WORKER_CALL_PERIOD);
try
{
SIPEndPoint activeWorkerEndPoint = GetFirstHealthyEndPoint();
if (activeWorkerEndPoint != null)
{
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(m_dispatcherUsername, null, "sip:" + m_dispatcherUsername + "@" + activeWorkerEndPoint.GetIPEndPoint().ToString(),
"sip:" + m_dispatcherUsername + "@sipcalldispatcher", "sip:" + activeWorkerEndPoint.GetIPEndPoint().ToString(), null, null, null, SIPCallDirection.Out, null, null, null);
SIPClientUserAgent uac = new SIPClientUserAgent(m_sipTransport, null, null, null, null);
uac.CallFailed += new SIPCallFailedDelegate(AppServerCallFailed);
uac.CallAnswered += (call, sipResponse) =>
{
if (sipResponse.Status != SIPResponseStatusCodesEnum.BadExtension)
{
logger.Warn("Probe call answered with unexpected response code of " + sipResponse.StatusCode + ".");
AppServerCallFailed(call, "Unexpected response of " + ((int)sipResponse.StatusCode) + " on probe call.");
}
};
uac.Call(callDescriptor);
}
else
{
logger.Warn("SIPAppServerManager was not able to find a healthy app server endpoint.");
}
}
catch (Exception probeExcp)
{
logger.Error("Exception SIPAppServerManager Sending Probe. " + probeExcp.Message);
}
}
}
catch (Exception excp)
{
logger.Error("Exception SIPAppServerManager ProberWorkers. " + excp.Message);
}
}
private SIPRequest GetInviteRequest(SIPCallDescriptor sipCallDescriptor, string branchId, string callId, SIPRouteSet routeSet, string content, string contentType)
{
SIPRequest inviteRequest = new SIPRequest(SIPMethodsEnum.INVITE, sipCallDescriptor.Uri);
SIPHeader inviteHeader = new SIPHeader(sipCallDescriptor.GetFromHeader(), SIPToHeader.ParseToHeader(sipCallDescriptor.To), 1, callId);
inviteHeader.From.FromTag = CallProperties.CreateNewTag();
inviteHeader.Contact = new List <SIPContactHeader>()
{
SIPContactHeader.GetDefaultSIPContactHeader(inviteRequest.URI.Scheme)
};
inviteHeader.Contact[0].ContactURI.User = sipCallDescriptor.Username;
inviteHeader.CSeqMethod = SIPMethodsEnum.INVITE;
inviteHeader.UserAgent = SIPConstants.SipUserAgentVersionString;
inviteHeader.Routes = routeSet;
inviteHeader.Supported = SIPExtensionHeaders.REPLACES + ", " + SIPExtensionHeaders.NO_REFER_SUB
+ ((PrackSupported == true) ? ", " + SIPExtensionHeaders.PRACK : "");
inviteRequest.Header = inviteHeader;
if (!sipCallDescriptor.ProxySendFrom.IsNullOrBlank())
{
inviteHeader.ProxySendFrom = sipCallDescriptor.ProxySendFrom;
}
SIPViaHeader viaHeader = new SIPViaHeader(new IPEndPoint(IPAddress.Any, 0), branchId);
inviteRequest.Header.Vias.PushViaHeader(viaHeader);
inviteRequest.Body = content;
inviteRequest.Header.ContentLength = (inviteRequest.Body != null) ? inviteRequest.Body.Length : 0;
inviteRequest.Header.ContentType = contentType;
try
{
if (sipCallDescriptor.CustomHeaders != null && sipCallDescriptor.CustomHeaders.Count > 0)
{
foreach (string customHeader in sipCallDescriptor.CustomHeaders)
{
if (customHeader.IsNullOrBlank())
{
continue;
}
else if (customHeader.Trim().StartsWith(SIPHeaders.SIP_HEADER_USERAGENT))
{
inviteRequest.Header.UserAgent = customHeader.Substring(customHeader.IndexOf(":") + 1).Trim();
}
else if (customHeader.Trim().StartsWith(SIPHeaders.SIP_HEADER_TO + ":"))
{
var customToHeader = SIPUserField.ParseSIPUserField(customHeader.Substring(customHeader.IndexOf(":") + 1).Trim());
if (customToHeader != null)
{
inviteRequest.Header.To.ToUserField = customToHeader;
}
}
else
{
inviteRequest.Header.UnknownHeaders.Add(customHeader);
}
}
}
}
catch (Exception excp)
{
logger.LogError("Exception Parsing CustomHeader for GetInviteRequest. " + excp.Message + sipCallDescriptor.CustomHeaders);
}
if (AdjustInvite != null)
{
inviteRequest = AdjustInvite(inviteRequest);
}
return(inviteRequest);
}
private void StartNewCallSync(SIPCallDescriptor callDescriptor)
{
try
{
callDescriptor.DialPlanContextID = (m_dialPlanContext != null) ? m_dialPlanContext.DialPlanContextID : Guid.Empty;
if (callDescriptor.DelaySeconds != 0)
{
callDescriptor.DelayMRE = new ManualResetEvent(false);
lock (m_delayedCalls)
{
m_delayedCalls.Add(callDescriptor);
}
int delaySeconds = (callDescriptor.DelaySeconds > MAX_DELAY_SECONDS) ? MAX_DELAY_SECONDS : callDescriptor.DelaySeconds;
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Delaying call leg to " + callDescriptor.Uri + " by " + delaySeconds + "s.", m_username));
callDescriptor.DelayMRE.WaitOne(delaySeconds * 1000);
}
lock (m_delayedCalls)
{
m_delayedCalls.Remove(callDescriptor);
}
if (!m_callAnswered && !m_commandCancelled)
{
ISIPClientUserAgent uacCall = null;
if (callDescriptor.ToSIPAccount == null)
{
if (callDescriptor.IsGoogleVoiceCall)
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Creating Google Voice user agent for " + callDescriptor.Uri + ".", m_username));
uacCall = new GoogleVoiceUserAgent(m_sipTransport, m_callManager, m_statefulProxyLogEvent, m_username, m_adminMemberId, m_outboundProxySocket);
}
else
{
uacCall = new SIPClientUserAgent(m_sipTransport, m_outboundProxySocket, m_username, m_adminMemberId, m_statefulProxyLogEvent,
m_customerAccountDataLayer.GetRtccCustomer, m_customerAccountDataLayer.GetRtccRate, m_customerAccountDataLayer.GetBalance,
m_customerAccountDataLayer.ReserveInitialCredit, m_customerAccountDataLayer.UpdateRealTimeCallControlCDRID);
}
}
else
{
if (QueueNewCall_External == null)
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "B2B calls are not supported in this dialplan manifestation.", m_username));
}
else
{
FireProxyLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Creating B2B call for " + callDescriptor.Uri + ".", m_username));
uacCall = new SIPB2BUserAgent(m_statefulProxyLogEvent, QueueNewCall_External, m_sipTransport, m_username, m_adminMemberId);
}
}
//ISIPClientUserAgent uacCall = new JingleUserAgent(m_username, m_adminMemberId, m_statefulProxyLogEvent);
if (uacCall != null)
{
lock (m_switchCalls)
{
m_switchCalls.Add(uacCall);
}
uacCall.CallAnswered += UACCallAnswered;
uacCall.CallFailed += UACCallFailed;
uacCall.CallRinging += UACCallProgress;
//uacCall.CallTrying += UACCallTrying;
uacCall.Call(callDescriptor);
}
}
}
catch (Exception excp)
{
logger.Error("Exception ForkCall StartNewCall. " + excp.Message);
}
}
public override void Start()
{
try
{
base.Start();
m_activeAppServerEntry = GetActiveAppServer();
if (m_activeAppServerEntry != null)
{
while (!m_stop)
{
Thread.Sleep(Convert.ToInt32(m_interval.TotalMilliseconds % Int32.MaxValue));
logger.Debug("AppServerDispatcher executing.");
m_startCheckTime.Reset();
m_startCheckTime.Start();
SIPClientUserAgent uac = new SIPClientUserAgent(m_sipTransport, null, null, null, LogMonitorEvent);
SIPCallDescriptor callDescriptor = new SIPCallDescriptor(null, null, m_activeAppServerEntry.AppServerURI.ToString(), null, null, null, null, null, SIPCallDirection.Out, null, null, null);
callDescriptor.MangleResponseSDP = false;
uac.CallFailed += CallFailed;
uac.CallAnswered += CallAnswered;
uac.Call(callDescriptor);
uac.ServerTransaction.CDR = null;
}
}
else
{
logger.Warn("No active app server could be set in AppServerDispatcher.Start, job stopping.");
}
}
catch (Exception excp)
{
logger.Error("Exception AppServerDispatcher StartJob. " + excp.Message);
}
}