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load [file join $dir libasyncresolver[info sharedlibextension]]
namespace eval ::asyncresolver {
variable request_number 0
proc resolve { original arguments } {
variable request_number
if { [ lsearch $arguments -server ] == -1} {
incr request_number
set varname ::asyncresolver::_wait_$request_number
::asyncresolver::asyncresolve [list ::asyncresolver::_resolve_callback $varname] [lindex $arguments end-1]
if {![info exists $varname]} {tkwait variable $varname}
if { [set $varname] == "" } {
error "couldn't open socket: host is unreachable (Name or service not known)"
}
set cmd [linsert [lreplace $arguments end-1 end-1 [set $varname]] 0 $original ]
unset $varname
return [eval $cmd]
} else {
return [eval [linsert $arguments 0 $original ] ]
}
}
proc _resolve_callback { var {ip ""} } {
set $var $ip
}
}
rename fconfigure _fconfigure
proc fconfigure { channel args } {
if { [llength $args] == 1 && [lindex $args 0] == "-sockname" } {
set sockname [::asyncresolver::sockname $channel]
foreach {ip port} $sockname break
return [list $ip [info hostname] $port]
} else {
return [eval [linsert $args 0 _fconfigure $channel] ]
}
}
# rename socket _socket
# proc socket { args } {
# return [::asyncresolver::resolve _socket $args]
# }
# package require tls
# if {[info commands ::tls::socket] == "::tls::socket"} {
# rename ::tls::socket ::tls::_socket
# proc ::tls::socket { args } {
# return [::asyncresolver::resolve ::tls::_socket $args]
# }
# }
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