Location header must be an absolute URL:

*adapt file-dir-handler's 301 response
*new procs GET-SOCKET-HOSTNAME-AND-PORTNUMBER, GET-SOCKET-HOST-STRING

scheme/httpd/file-dir-handler.scm

@@ -252,10 +252,16 @@
 	       (send-file-response fname info req options))
 	      
 	      ((directory)		; Send back a redirection "foo" -> "foo/"
+	       (let* ((url (request-url req))
+		      (url-string (http-url->url-string url))
+		      (location-prefix 
+		       (if (absolute-url? url)
+			   url-string
+			   (string-append 
+			    "http://" (get-socket-host-string req) url-string))) ;we don't support virtual hosts yet!
+		      (location (string-append location-prefix "/")))
 	       (make-error-response
-		(status-code moved-perm) req
+		(status-code moved-perm) req location)))
-		(string-append (http-url->url-string (request-url req))
-			       "/")))
 
 	      (else (make-error-response (status-code forbidden) req)))))
 	 

scheme/lib/sunet-utilities.scm

@@ -2,10 +2,28 @@
 
 ;;; This file is part of the Scheme Untergrund Networking package.
 
-;;; Copyright (c) 2002 by Andreas Bernauer.
 ;;; For copyright information, see the file COPYING which comes with
 ;;; the distribution.
 
+;;; interpolate hostname/IP address and portnumber from our request's net connection.
+;;; return host as string and portnumber as integer.
+(define (get-socket-hostname-and-portnumber req)
+  (let ((addr (socket-local-address (request-socket req))))
+    (with-fatal-error-handler
+     (lambda (c more)
+       (call-with-values (lambda ()(socket-address->internet-address addr))
+	 (lambda (ipaddr portnum) (values (format-internet-host-address ipaddr) portnum))))
+     (values (host-info:name (host-info addr)) (service-info:port (service-info addr))))))
+ 
+;; interpolate host info from our request's net connection.
+;; return string "foo.bar.org:7777" or "134.2.12.72:7777"
+(define (get-socket-host-string req)
+  (call-with-values
+      (lambda () (get-socket-hostname-and-portnumber req))
+    (lambda (host portnum) (string-append host ":" (number->string portnum)))))
+	  
+
+;;; interpolate hostname or IP address from socket local address. return a string
 (define (host-name-or-ip addr)
   (with-fatal-error-handler
    (lambda (condition more)

scheme/packages.scm

@@ -61,6 +61,7 @@
 	  http-url-path
 	  http-url-query
 
+	  absolute-url?
 	  url-string->http-url
 	  http-url->url-string
 	  http-url-path->path-string))
@@ -237,7 +238,9 @@
 	  format-port))
 
 (define-interface sunet-utilities-interface
-  (export host-name-or-ip
+  (export get-socket-hostname-and-portnumber
+	  get-socket-host-string
+	  host-name-or-ip
 	  on-interrupt
 	  socket-address->string
 	  dump