public PRSMessage ParseMessageType(PRSMessage Request)//Parses through message and formulates a response to be sent back
{
//error checking
//0. SUCCESS
//1.SERVICE_IN_USE
//2.SERVICE_NOT_FOUND
//3.ALL_PORTS_BUSY
//4.INVALID_ARG
//5.UNDEFINED_ERROR
try
{
switch (Request.msgType)//checks the type
{
case PRSMessage.MsgType.PORT_DEAD:
return(portdead(Request));
case PRSMessage.MsgType.CLOSE_PORT: //Closes the requested port 3 errors 2,4,5
//if service in msg is not at either the correct port or name
//throw out Response service not found
return(close_port(Request));
case PRSMessage.MsgType.KEEP_ALIVE: //keeps service alive 3 errors 2,4,5
//if port or service is incorrect return invalid
return(keep_alive(Request));
case PRSMessage.MsgType.LOOKUP_PORT: //takes a service name and gives a port error 2,4,5
//if not well formulated throw invalid
//if service name not correct return not found
return(lookup_port(Request));
case PRSMessage.MsgType.REQUEST_PORT: //Gives service lowest port 1,3,4,5
return(request_port(Request));
case PRSMessage.MsgType.STOP: //Server gets stopped by the Handler this sends response
//only checks message type
Console.WriteLine("Stop Has been recieved");
return(PRSMessage.MakeSTOP()); //Stop doesn't impact the port reservations so it just uses its method
default: //if not a correct message code
return(PRSMessage.MakeRESPONSE(PRSMessage.Status.INVALID_ARG, 0)); //Returns an invalid arg
}
}
catch (Exception e)
{
return(PRSMessage.MakeRESPONSE(PRSMessage.Status.UNDEFINED_ERROR, 0));//if this happened the service broke
}
}
private static void StopServer(Socket clientsocket)
{
IPEndPoint endPt = new IPEndPoint(IPAddress.Parse(PRSCommunicator.DEFAULT_IP), PRSCommunicator.DEFAULT_PORT);
PRSCommunicator.SendMessage(clientsocket, endPt, PRSMessage.MakeSTOP());
}
