http.request was using old host header during redirects.

FIX

@@ -1,3 +1,4 @@
+http was preserving old host header during redirects
 fix smtp.send hang on source error
 add create field to FTP and SMTP and fix HTTP ugliness
 clean timeout argument to open functions in SMTP, HTTP and FTP

NEW

@@ -14,6 +14,9 @@ This is just a bug-fix/update release.
     * Improved: http.request is robust to evil servers that
       send inappropriate 100-continue messages (David Burgess);
 
+    * Fixed: http.request was using the old host header during
+      redirects (Florian Berger);
+
     * Fixed: sample unix.c had fallen through the cracks
       during development (Matthew Percival);
 

doc/index.html

@@ -172,6 +172,8 @@ header (William Trenker);
 <li> Improved: <tt>http.request</tt> is robust to evil
 servers that send inappropriate 100-continue messages
 (David Burgess);
+<li> Fixed: <tt>http.request</tt> was using the old host header during
+redirects (Florian Berger);
 <li> Fixed: sample <tt>unix.c</tt> had fallen through the
 cracks during development (Matthew Percival); 
 <li> Fixed: error code was not being propagated correctly in

src/http.lua

@@ -261,7 +261,7 @@ function tredirect(reqt, location)
     local result, code, headers, status = trequest {
         -- the RFC says the redirect URL has to be absolute, but some
         -- servers do not respect that
-        url = url.absolute(reqt, location),
+        url = url.absolute(reqt.url, location),
         source = reqt.source,
         sink = reqt.sink,
         headers = reqt.headers,