private SipContext ConvertToContext(byte[] bytes, IPEndPoint from, IPEndPoint to)
{
Datagram datagram = new Datagram(bytes, from , to);
var message = new SipParser2(_messageFactory, _headerFactory).Parse(datagram);
return CreateSipContext(message, datagram);
}
public SipMessage Parse(Datagram datagram)
{
Check.Require(datagram, "datagram");
_logger.Trace("Parsing datagram...");
new SipLexer().Lex(datagram.DataBytes, OnFirstLine, OnHeaderLine, OnBody);
_logger.Trace("Datagram parsed succesfully.");
return _message;
}
public SipContext CreateContext(Datagram datagram)
{
Check.Require(datagram, "datagram");
_logger.Trace("Calling CreateContext...");
var parserContext = new SipParserContext(_messageFactory, _headerFactory);
SipContext context = null;
parserContext.ParseCompleted += (s, e) => context = ParserContext_ParseCompleted(e, datagram);
_logger.Trace("Calling Parse on parser context...");
parserContext.Parse(datagram.DataBytes);
return context;
}
private SipContext CreateSipContext(SipMessage message, Datagram datagram)
{
var request = message as SipRequest;
var response = message as SipResponse;
var c = new SipContext();
c.Request = request;
c.Response = response;
c.RemoteEndPoint = datagram.RemoteEndPoint;
c.LocalEndPoint = datagram.LocalEndPoint;
return c;
}
SipContext ParserContext_ParseCompleted(ParseCompletedEventArgs e, Datagram datagram)
{
var c = new SipContext();
_logger.Trace("Parse on parser context completed.");
c.Request = e.Message as SipRequest;
c.Response = e.Message as SipResponse;
c.RemoteEndPoint = datagram.RemoteEndPoint;
c.LocalEndPoint = datagram.LocalEndPoint;
if (c.Request != null)
_logger.Debug("Request Received '" + c.Request.RequestLine.Method + " " + c.Request.RequestLine.Uri.FormatToString() + "' from " +
datagram.RemoteEndPoint);
if (c.Response != null)
_logger.Debug("Response Received '" + c.Response.StatusLine.StatusCode + " " + c.Response.StatusLine.ReasonPhrase + "' from " +
datagram.RemoteEndPoint);
return c;
}
private SipContext CreateSipContext(SipMessage message, Datagram datagram)
{
var request = message as SipRequest;
var response = message as SipResponse;
if (request != null)
{
_logger.Debug("Request Received '" + request.RequestLine.Method + " " + request.RequestLine.Uri.FormatToString() + "' from " +
datagram.RemoteEndPoint);
}
else
{
_logger.Debug("Response Received '" + response.StatusLine.StatusCode + " " + response.StatusLine.ReasonPhrase + "' from " +
datagram.RemoteEndPoint);
}
var c = new SipContext();
_logger.Trace("Parse on parser context completed.");
c.Request = request;
c.Response = response;
c.RemoteEndPoint = datagram.RemoteEndPoint;
c.LocalEndPoint = datagram.LocalEndPoint;
return c;
}
private void ReceiveIncomingDatagram()
{
var buffer = new byte[1024];
while (_isRunning)
{
try
{
if (_socket.Poll(0, SelectMode.SelectRead))
{
EndPoint remoteEp = new IPEndPoint(IPAddress.Any, 0);
int received = _socket.ReceiveFrom(buffer, ref remoteEp);
/*diagnostics*/
BytesReceived += received;
PacketsReceived++;
byte[] data = new byte[received];
Array.Copy(buffer, data, received);
var datagram = new Datagram(data, _ipEndPoint, (IPEndPoint) remoteEp);
_threadPool.QueueWorkItem(ProcessIncomingDatagram, datagram, OnProcessIncomingDatagramCompleted, CallToPostExecute.Always);
}
}
catch (SocketException se)
{
_logger.ErrorException(string.Format("Failed to receive message from socket. SocketErrorCode: {0}, ErrorCode: {1}", se.SocketErrorCode, se.ErrorCode), se);
}
catch (Exception e)
{
_logger.ErrorException("Failed to receive message", e);
}
Thread.Sleep(10);
}
}
