Serrver State Diagram

Hi everyone,I need to draw state diagram fro server so I need help.My server must be able to receive request,process it and then send it to another application.It must also return response from that other application to the first application.Question is: can I draw 2 state diagram.First for case of sending request to second application,and second for sending response to that first application.Does anyone knows for some site with good examples and tutorials.
Thanks in advance

You should be able to illustrate this process with a single state machine diagram.

As for websites, Wikipedia’s article seems to be comprehensive about this subject.

Hope that helps.

Thanks for reply it was helpful.