Sending messages with few fields between client and server?

This is a discussion on Sending messages with few fields between client and server? within the C Programming forums, part of the General Programming Boards category; Hi, I want to build a simple client/server model( TCP ) in linux with C, which do a sample job ...

  1. #1
    nkn
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    Lightbulb Sending messages with few fields between client and server?

    Hi,

    I want to build a simple client/server model( TCP ) in linux with C, which do a sample job as:
    Client send a HELLO message to server, Hello message contains 4 fields
    field 1: identify field - with 11 characters, "thangnc". If the string server received is not match "thangnc", so server will discard this message, if matchs server display "thangnc".
    field 2: with 32 bit, contains size of Hello message.


    I think that analysis of that model should:
    Client : i creat a message queue, i send a struct Hello message created to message queue,
    then i use send( ) with parameter points to message queue.
    Server: i creat a message queue, a sample Hello message like Client, i send Hello to the
    queue, then listen( ) to connect from client, recv( ) from client, point socket used to
    recv( ) to message queue.
    After that, when i want to use information in Hello message i just point in
    message queue.

    So, is this analysis right ? Or Wrong?

    when i used this, i printf () "thangnc" in server, but many ugly charaters display, i can't see "thangnc".
    What i have to do?

  2. #2
    and the hat of sweating
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    Posting your code would be much more useful than giving a generic description.

  3. #3
    nkn
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    thanks man, i solved this problem.

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