[MNO] - Whilst knocking up a PocketPC application today [PocketICS], I have noticed some weirdness with fileevent (or socket or fconfigure... I'm not sure where to look).

I can minimally demonstrate this with the following code snippet (adapted from the [telnet] page) which tries to connect to an internet chess server:-

 #! /bin/sh
 # THIS LINE MUST BE HERE \
     exec tclsh "$0" ${1+"$@"}
 package require Tk
 
 proc telnet {{server localhost} {port 23}} {
     global sock
     set sock [socket $server $port]
     fconfigure $sock -buffering none -blocking 0
     fileevent $sock readable [list fromServer $sock]
     global closed
     vwait closed($sock)
     unset closed($sock)
 }
 proc toServer {} {
     global comm sock
     puts $sock $comm
     set comm ""
     update
 }
 proc fromServer {sock} {
     set data x
     while {[string length $data]} {
 	set data [read $sock 4096]
 	if {[eof $sock]} {
 	    disconnect $sock
 	    return
 	}
 	if {[string length $data]} {
 	    .t insert end $data
 	    .t see end
 	}
     }
 }
 proc disconnect {sock} {
     global closed
     close $sock
     set closed($sock) 1
 }
 
 pack [text .t -font {Tahoma 7} -height 20 -width 40] [entry .e -textvariable comm]
 bind .e <Return> toServer
 telnet chessclub.com 5000
 
Running this piece of code on either a linux system (Tcl/Tk version 8.4b2) or Windows 2000 system (ActiveTcl 8.4.0) works exactly as expected - I get to the login prompt,
can enter my handle in the entry box and this gets sent to the server which then prompts me for the password.

If, however, I run this on my pocketPC, (using the 8.4.3 tcl/tk on the [Windows/CE] page), I get the login prompt (i.e. proving that the fileevent has fired), and can send my handle, but I never see the password prompt in the text box (i.e. the fileevent doesn't seem to fire again).

The strange thing is that if I snoop the connection (my PocketPC internet connection is via my Linux machine) using tcpdump, I can see the handle being sent, and the response including the password prompt being sent back by the server.  I can then even enter the password in the entry box, and see it go to the server and the login session continues fine.  The fileevent never seems to fire agian though, so all that I ever seem to get in my text box is the first set of output up to and including the login prompt.

Any ideas?  Is this a bug in the Windows/CE Tcl/Tk version?
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[PocketPC] [PDA]