Hi, I need to communicate from x clients processes to one server process. I want to use the message_queue to send messages from the clients to the server, and when the server is done, it sends back its answer to the client. Do you have any examples ? with one bidirectionnal message_queue, or do I have to create a message_queue for each "direction" ? How can I deal with one message_queue and multiple process so that the request sent to one process is read by the good process ? Thanks for your help Laurence