public void ParseSIPRouteSetTest()
{
Console.WriteLine("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
string routeSetString = "<sip:127.0.0.1:5434;lr>,<sip:10.0.0.1>,<sip:192.168.0.1;ftag=12345;lr=on>";
SIPRouteSet routeSet = SIPRouteSet.ParseSIPRouteSet(routeSetString);
Console.WriteLine(routeSet.ToString());
Assert.IsTrue(routeSet.Length == 3, "The parsed route set had an incorrect length.");
Assert.IsTrue(routeSet.ToString() == routeSetString, "The parsed route set did not produce the same string as the original parsed value.");
SIPRoute topRoute = routeSet.PopRoute();
Assert.IsTrue(topRoute.Host == "127.0.0.1:5434", "The first route host was not parsed correctly.");
Assert.IsFalse(topRoute.IsStrictRouter, "The first route host was not correctly recognised as a loose router.");
topRoute = routeSet.PopRoute();
Assert.IsTrue(topRoute.Host == "10.0.0.1", "The second route host was not parsed correctly.");
Assert.IsTrue(topRoute.IsStrictRouter, "The second route host was not correctly recognised as a strict router.");
topRoute = routeSet.PopRoute();
Assert.IsTrue(topRoute.Host == "192.168.0.1", "The third route host was not parsed correctly.");
Assert.IsFalse(topRoute.IsStrictRouter, "The third route host was not correctly recognised as a loose router.");
Assert.IsTrue(topRoute.URI.Parameters.Get("ftag") == "12345", "The ftag parameter on the third route was not correctly parsed.");
}
/// <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);
}
