- Pooyan McSporran found and fixed a flaw where you first would do a normal

http request and then you'd reuse the handle and replace the Accept: header,
  as then libcurl would send two Accept: headers!

CHANGES

@@ -6,6 +6,11 @@
 
                                   Changelog
 
+Daniel S (15 Feb 2008)
+- Pooyan McSporran found and fixed a flaw where you first would do a normal
+  http request and then you'd reuse the handle and replace the Accept: header,
+  as then libcurl would send two Accept: headers!
+
 Daniel S (11 Feb 2008)
 - Yang Tse pointed out a few remaining quirks from my timeout refactoring from
   Feb 7 that didn't abort properly on timeouts. These are actually old

RELEASE-NOTES

@@ -19,6 +19,7 @@ This release includes the following bugfixes:
  o improved strdup replacement
  o GnuTLS-built libcurl failed when doing global cleanup and reinit
  o error message problem when unable to resolve a host on Windows
+ o Accept: header replacing
 
 This release includes the following known bugs:
 
@@ -36,6 +37,6 @@ This release would not have looked like this without help, code, reports and
 advice from friends like these:
 
  Michal Marek, Dmitry Kurochkin, Niklas Angebrand, Günter Knauf, Yang Tse,
- Dan Fandrich, Mike Hommey
+ Dan Fandrich, Mike Hommey, Pooyan McSporran
 
         Thanks! (and sorry if I forgot to mention someone)

lib/http.c

@@ -2182,8 +2182,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
      (conn->bits.httpproxy && !conn->bits.tunnel_proxy) )?
     "Pragma: no-cache\r\n":NULL;
 
-  if(!checkheaders(data, "Accept:"))
-    http->p_accept = "Accept: */*\r\n";
+  http->p_accept = checkheaders(data, "Accept:")?NULL:"Accept: */*\r\n";
 
   if(( (HTTPREQ_POST == httpreq) ||
        (HTTPREQ_POST_FORM == httpreq) ||