X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=ipif%2Fudptunnel;fp=ipif%2Fudptunnel;h=1b5031c7d2f1f2e3406e0a4bbb21a8ddaec865ff;hb=1d1209a4764e161ec232d2d76d7e698c15fd874c;hp=7160cca33a9c55d19a8cc78f2d45ba7e7cc9836a;hpb=40f7555063d5bd252bdde051baa13d082e17b610;p=userv-utils.git

diff --git a/ipif/udptunnel b/ipif/udptunnel
index 7160cca..1b5031c 100755
--- a/ipif/udptunnel
+++ b/ipif/udptunnel
@@ -215,7 +215,7 @@ for (;;) {
 	    quit "tunnel endpoint closed by system";
 	}
 	while (($p= index($upbuf,"\300")) >= 0) {
-	    if (!defined(send L,substr($upbuf,0,$p+1),0,$rs)) {
+	    if ($p && !defined(send L,substr($upbuf,0,$p),0,$rs)) {
 		warning("transmit error: $!");
 	    } else {
 		if (!$upyet) {
@@ -233,6 +233,7 @@ for (;;) {
 	    warning("got packet from incorrect peer $rsp_from");
 	    next;
 	}
+	$downbuf= "\300".$downbuf."\300";
 	if (!defined($r= syswrite(DW,$downbuf,length $downbuf))) {
 	    warning("tunnel endpoint write error: $!");
 	} elsif ($r != length $downbuf) {