when parsing the vhosts from /sys/lib/rewrite the parser discards the
port such that

	http://foo/
and
	http://foo:1080/

are treated as the same vhost.

when parsing the http request, httplib takes the Host: header and
passes it (correctly) as the vhost.  a Host: with a :port will never
match a vhost.

The correct behaviour should be to treat the host's individually and
require multiple entries in /sys/lib/rewrite if two vhosts on the
different ports want to share namespaces.

this patch just removes the ":" from the tokenizer of the vhost
parser.

I've been running the patched httpd here since the day I supplied the
patch.

If you want to verify the correctness the explanation of the Host:
header is in section 14.23 of http://www.faqs.org/rfcs/rfc2616.html

Reference: /n/sources/patch/applied/httpd-host-port
Date: Wed Sep 26 21:19:54 CES 2007
Signed-off-by: matt@proweb.co.uk

--- /sys/src/cmd/ip/httpd/redirect.c	Thu Sep 13 23:43:13 2007
+++ /sys/src/cmd/ip/httpd/redirect.c	Thu Sep 13 23:43:10 2007
@@ -94,9 +94,10 @@
 			if(strncmp(field[0], "http://", STRLEN("http://")) == 0 &&
 					strncmp(field[1], "http://", STRLEN("http://")) != 0){
 				host = field[0]+STRLEN("http://");
-				s = strpbrk(host, "/:");
+				s = strpbrk(host, "/");
 				if(s)
-					*s = 0;  /* chop trailing slash or portnumber */
+					*s = 0;  /* chop trailing slash */
+				
 				insert(vhosttab, estrdup(host), estrdup(field[1]));
 			}else{
 				insert(redirtab, estrdup(field[0]), estrdup(field[1]));