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accf_data ()
  • >> accf_data (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    NAME

    accf_data
    
     - buffer incoming connections until data arrives
    
     
    

    SYNOPSIS

    options INET
    options ACCEPT_FILTER_DATA
    kldload accf_data  

    DESCRIPTION

    This is a filter to be placed on a socket that will be using accept ();
    to receive incoming connections.

    It prevents the application from receiving the connected descriptor via accept ();
    until data arrives on the connection.

    The Fa ACCEPT_FILTER_DATA kernel option is also a module that can be enabled at runtime via kldload(8) if the INET option has been compiled into the kernel.  

    EXAMPLES

    Assuming ACCEPT_FILTER_DATA has been included in the kernel config file or the options INET module has been loaded, this will enable the data accept filter on the socket Fa sok .
            struct accept_filter_arg afa;
    
            bzero(&afa, sizeof(afa));
            strcpy(afa.af_name, "dataready");
            setsockopt(sok, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa));
    
     

    SEE ALSO

    setsockopt(2), accept_filter9, accf_http9  

    HISTORY

    The accept filter mechanism and the accf_data filter were introduced in Fx 4.0 .  

    AUTHORS

    This manual page and the filter were written by An Alfred Perlstein .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    EXAMPLES
    SEE ALSO
    HISTORY
    AUTHORS


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