If a HTTP post to a server returns any redirect code other than 307, then bro...

chrome_frame/urlmon_url_request.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome_frame/urlmon_url_request.h"
 
 #include <wininet.h>
 
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
@@ skipping 150 matching lines @@
     ULONG status_code, LPCWSTR status_text) {
   switch (status_code) {
     case BINDSTATUS_REDIRECTING:
       DCHECK(status_text != NULL);
       DLOG(INFO) << "URL: " << url() << " redirected to "
                  << status_text;
       redirect_url_ = status_text;
       // Fetch the redirect status as they aren't all equal (307 in particular
       // retains the HTTP request verb).
       redirect_status_ = GetHttpResponseStatus();
+      // NOTE: Even though RFC 2616 says to preserve the request method when
+      // following a 302 redirect, normal browsers don't do that. Instead they
+      // all convert a POST into a GET in response to a 302 and so shall we.
+      // For 307 redirects, browsers preserve the method.  The RFC says to
+      // prompt the user to confirm the generation of a new POST request, but
+      // IE omits this prompt and so shall we.

[amit, 2009/10/27 17:53:57]

Does chrome do this as well?

[ananta, 2009/10/27 18:04:35]

yes,

+      if (redirect_status_ != 307 &&
+          LowerCaseEqualsASCII(method(), "post")) {
+        set_method("get");
+        post_data_len_ = 0;
+      }
       break;
 
     default:
       DLOG(INFO) << " Obj: " << std::hex << this << " OnProgress(" << url()
           << StringPrintf(L") code: %i status: %ls", status_code, status_text);
       break;
   }
 
   return S_OK;
 }
@@ skipping 621 matching lines @@
       ret = net::ERR_ACCESS_DENIED;
       break;
 
     default:
       DLOG(WARNING)
           << StringPrintf("TODO: translate HRESULT 0x%08X to net::Error", hr);
       break;
   }
   return ret;
 }