$! = 0;
	$res = $sock->read($data, 255);
	# $res: #chars, or 0 for EOF, or undef for error
	$err = $!;
	$iologger->debug("bufrd res " . safe($res) . ": " .
			 safe($data) . " err $err");

##</code><code>##

2011-10-13 09:21:39,782 DEBUG kcmdproxy.child.io(30674):366 bufrd res <<127>>: <<simkserver<sp>30665<sp>port<sp>2001<sp>client<sp>127.0.0.1<sp>command<sp>special<lf>1,8,7,2,13,1,12<lf>13,5,11,10,8,0,13<lf>5,2,11,4,5,10,5<lf>3,5,7,10,12,2,12<lf>>> err Resource temporarily unavailable