public static byte[] ProcessPandARequest(string clientID, byte[] bytes)
{
//Process a PandA request from a remote socket client
PandaPacket request = null;
PandaPacket response = null;
DateTime started = DateTime.Now;
try {
//Process the message
request = PandaPacket.Decode(clientID, bytes);
AppTrace.Instance().TheTrace.WriteLine(new TraceMessage("REQUEST:" + request.Message, AppLib.EVENTLOGNAME, LogLevel.Information, "PacketMgr"));
if (request.Valid)
{
//Check if this was a prior request
PandaPacket priorResponse = isPriorRequest(clientID, request);
if (priorResponse != null)
{
//This was a prior message; return prior response
response = priorResponse;
AppTrace.Instance().TheTrace.WriteLine(new TraceMessage("PRIOR RESPONSE: " + priorResponse.Message, AppLib.EVENTLOGNAME, LogLevel.Information, "PacketMgr"));
}
else
{
//New, valid message; persist request and route to message handler
switch (request.MessageCode)
{
case REQUEST_LABELDATA:
response = getLabelDataResponse(clientID, request);
LastRequest = request;
try { request.ProcessingTime = ((TimeSpan)DateTime.Now.Subtract(started)).TotalSeconds; } catch {}
if (LabelDataRequestComplete != null)
{
LabelDataRequestComplete(null, new PandaPacketEventArgs(request));
}
break;
case REQUEST_VERIFYLABEL:
response = getVerifyLabelResponse(clientID, request);
LastRequest = request;
try { request.ProcessingTime = ((TimeSpan)DateTime.Now.Subtract(started)).TotalSeconds; } catch {}
if (VerifyLabelRequestComplete != null)
{
VerifyLabelRequestComplete(null, new PandaPacketEventArgs(request));
}
break;
case REQUEST_HEARTBEAT:
response = getHeartbeatResponse(clientID, request);
if (HeartbeatRequestComplete != null)
{
HeartbeatRequestComplete(null, EventArgs.Empty);
}
break;
case REQUEST_RESEND:
response = LastRequest.Response;
AppTrace.Instance().TheTrace.WriteLine(new TraceMessage("Resend requested.", AppLib.EVENTLOGNAME, LogLevel.Warning, "PacketMgr"));
if (ResendRequestComplete != null)
{
ResendRequestComplete(null, EventArgs.Empty);
}
break;
default:
AppTrace.Instance().TheTrace.WriteLine(new TraceMessage("Unknown message code.", AppLib.EVENTLOGNAME, LogLevel.Warning, "PacketMgr"));
break;
}
}
}
else
{
//Invalid message packet
response = PandaPacket.Encode(clientID, RESPONSE_MSGERROR, request, 0, 0, "");
AppTrace.Instance().TheTrace.WriteLine(new TraceMessage("Message failed (decode) validation...", AppLib.EVENTLOGNAME, LogLevel.Warning, "PacketMgr"));
}
}
catch (Exception ex) {
response = PandaPacket.Encode(clientID, RESPONSE_MSGERROR, request, 0, 0, "");
AppTrace.Instance().TheTrace.WriteLine(new TraceMessage("Error occurred while processing message: " + ex.ToString(), AppLib.EVENTLOGNAME, LogLevel.Error, "PacketMgr"));
}
return(response != null?response.Bytes:null);
}
