Hi, I am pretty much a beginner with TCP programming, so my question might be very basic or even silly because of a lack of understanding.
I am writing a client software for an existing closed source server. I am sending TCP packets as requests to this server and of course, I am waiting for replies. In principle, this works nicely, but when starting two client processes on the same machine contacting the same server process, the replies are going back to *any* of them, not necessarily to the requesting instance. Checking the communication with Wireshark, I can see that the replies go back to different ports on the client computer when the request was sent by different instances of the client, but my program obviously does not distinguish there. My implementation looks as follows: uses Blcksock; // ... MeiTCPBlockSocket := TTCPBlockSocket.Create; MeiTCPBlockSocket.Connect(RemoteHost, RemotePort); MeiTCPBlockSocket.ResetLastError; // ... MeiTCPBlockSocket.SendBuffer(@XCom, SizeOf(XCom)); // ... BufferSize := MeiTCPBlockSocket.WaitingData; SetLength(Buffer, BufferSize); MeiTCPBlockSocket.RecvBufferEx(@Buffer[0], BufferSize, 2500); // ... MeiTCPBlockSocket.CloseSocket; FreeAndNil(MeiTCPBlockSocket); Any advice on what is wrong with this code would be highly appreciated! Paul ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ synalist-public mailing list synalist-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/synalist-public
