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POhow to manage multiple instances of an app in server connecting with multiple clients on diff machines
 

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  1. POhow to manage multiple instances of an app in server connecting with multiple clients on diff machines
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    <p>I have an application that needs to be paired with a client on a remote machine. There can be several instances of this application running on the server, each servicing a different client, probably as many as 25-30 pairs.</p> <p>Each pair of server-client will need to have two tcp connections. The server app has 2 processes, and each process has its own tcp connection to the client. </p> <ul> <li>Process A exchanges commands with client </li> <li>Process B receives constant video stream from the client.</li> </ul> <p>In addition, there's another tcp connection between each pair Process A/Process B</p> <p>Commands/Data will flow from as follows:</p> <p>Client &lt;--> Process A &lt;---> Process B</p> <p>while video will flow in this direction: </p> <p>client --> Process B</p> <p>I need help to determine what is the best way to establish all the tcp connections. Who sets up listeners? how to determine the ports to be used? etc.</p> <p>I currently have a single instance of Process A communicating with both Process B and client, but it is all running in one machine, so I am just using "localhost" as my hostname for now. I am also hardcoding the 2 ports that I am using, so I need to change that as well when I have multiple instances so that each instance uses different ports.</p> <p>Once Process A makes a connection with Client, it needs to ask the Client for a port so that Process B can make the other connection directly with Client. Is this a good way to do it, or what is a better way? How can the client determine what port is available to be used?</p> <p>Also any help or pointers on how to assign the ports so this can work with multiple instances would be appreciated.</p> <p>Thanks, please ask any questions about anything that is not clear. </p> <p>EDIT: Actually process A and process B are two different applications.</p>
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