Socket programming

[nahitan]

Hi there, I have an application that is receiving messages from some mobile devices from eight different locations through GPRS using UDP sockets, and I am supposed to send the messages to the 2nd application using TCP/Ip sockets some how that there will be no confusion for the response that comes from the 2nd application that I am supposed to transfer to the device that has sent the original message. For example if I can have the same Ip address and use 8 different ports for that to send to the 2nd application and receive the response back. Th question is how can I do that without creating 8 sockets? Appreciates any idea

[Mark Salsbery]

I think your two choices are 1) Use 8 separate TCP/IP sockets, 1 for each mobile source. 2) Use one TCP/IP socket connection and wrap the UDP datagram in a packet containing a header that indicates which mobile source the message came from. The same way a TCP packet wraps an IP packet. Mark

[nahitan]

Thanks for the tip, but the 2nd applicstion does not check the header that actually is there containing the mobile id, group id. Regards,

[Mark Salsbery]

nahitan wrote:

...the 2nd applicstion does not check the header that actually is there containing the mobile id, group id.

Bummer :)