help with listen and sockets.

This is a discussion on help with listen and sockets. within the Networking/Device Communication forums, part of the General Programming Boards category; server: i make a listen with 5 backlog and then a newfd= accept... several clients can connect several times, trade ...

  1. #1
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    help with listen and sockets.

    server: i make a listen with 5 backlog

    and then a newfd= accept...

    several clients can connect several times, trade messages and shutdown (after closing newfd)

    the problem is that if the same client stays alive and makes more then 5 connect close cyles i get a error on the 6th connect

    does the 5 in listen mean i can only connect 5 times with each client?

    i have a printf in the server so that each time a newfd is created i get itīs number. when itīs closed by the client, i close it also in the server. close does not return -1, and the number of the closed fd is the same as newfd.

    i imagine this can be hard to understand without code, but itīs a big program...

    any help?

  2. #2
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    The 5 in listen is the Backlog. You get a socket to communicate only when you accept a connection. You may get multiple connection requests. Listen queues these requests and keeps only Backlog number of requests active. If it has Backlog number of requests pending and it gets another request to connect, that request is dropped.
    Code:
    >+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.

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