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POClient/Server applications communication over the command line with threads c++
 

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  1. POClient/Server applications communication over the command line with threads c++
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    <p>I have two applications one is a client the other is a server. The server launches the client as a sub thread. The client then outputs its commands via its standard out. The server waits for a command and responses accordingly. </p> <p>Basically client server via the standard out. </p> <p>For example:</p> <pre><code>client &gt;&gt; Move north Server &gt;&gt; Your new location is {2,3} client &gt;&gt; Move north Server &gt;&gt; Your new location is {2,2} client &gt;&gt; Shoot east Server &gt;&gt; Projectile 66638 heading east {3,2} </code></pre> <p>The problem is that i don't know how to connect the two applications together so the server and read and response to the client application. </p> <p>The reason that I would like to use the command line as the communication layer is that I want to keep the creation of the client as easy as possible. </p> <p>Also there may be more then one client at a time, The clients should be able to communicate with the server interdependently of each other. (they should not be able to see each others communications) </p> <p>Currently I am launching the application via the <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/ms682425%28v=vs.85%29.aspx" rel="nofollow">CreateProccess</a>() function. This function makes it easy to set up the initial command line parameters of the application. just not the communication afterwards. </p> <p>My Question is: </p> <ul> <li>How does a server application that launches a client application as a thread, read/writes the clients standard output? </li> </ul>
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    1. USAlan Stokes
    1. USSteven smethurst
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      1. USAlireza Soori
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    1. COOne of the first things you'll need to do is look up [how to make a pipe in c++](http://stackoverflow.com/questions/5840109/how-to-make-a-pipe-in-c)
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      1. USKiril
    2. COTrying to redirect stdout is a long and painful way to use a named pipe. If you use CreateProcess() already then use this SDK article for guidance: http://msdn.microsoft.com/en-us/library/windows/desktop/aa365590%28v=vs.85%29.aspx
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      1. POClient/Server applications communication over the command line with threads c++
      1. USHans Passant
    3. COYou can't really use `stdout`/`stdin` as way of communicating when using threads. If you put the client in a separate _process_ it would work, but I wouldn't call it good design. Instead you should look at other ways of communication, such as pipes or sockets. This will help you in the future when you client is _not_ a part of your server.
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      1. USSome programmer dude
 

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