ns_sockcallback(n) 4.99 "NaviServer Built-in Commands"

NAME

ns_sockcallback - Register a socket callback script

    TABLE OF CONTENTS
    SYNOPSIS
    DESCRIPTION
    COMMANDS
    EXAMPLES
    SEE ALSO
    KEYWORDS

SYNOPSIS

ns_sockcallback sockid script when

ns_sockcallback registers a socket callback script. The script should accept the arguments sockid and when. The script will be called according to the value of the when argument as follows: Value of, when Condition under which the script will be called:

r - the socket is readable
w - the socket is writeable
e - the socket has an exceptional condition
x - the server is shutting down

COMMANDS

ns_sockcallback sockid script when

EXAMPLES

set sock [ns_socklisten * 9000] ns_sockcallback $sock newconn r # Keep $sock from closing after connection ends detach $sock # When a connection arrives, newconn will be called as: # newconn $sock r proc newconn {sock when} { set fds [ns_sockaccept $sock] set rfd [lindex $fds 0] set wfd [lindex $fds 1] puts $wfd "Hello!" close $rfd close $wfd }

KEYWORDS

NaviServer