Handle OPTIONS http request method in wsgi handler, fixes issue2550587.

Thanks to Thomas Arendsen Hein for reporting and to Intevation for
funding the fix.

Author: Ralf Schlatterbeck

CHANGES.txt

@@ -23,8 +23,11 @@ Fixes:
   fix.
 - Fix traceback on .../msgN/ url, this requests the file content and for
   apache mod_wsgi produced a traceback because the mime type is None for
-  messages, fixes issue2550586, thanks to ThomasAH for reporting and to
-  Intevation for funding the fix.
+  messages, fixes issue2550586, thanks to Thomas Arendsen Hein for
+  reporting and to Intevation for funding the fix.
+- Handle OPTIONS http request method in wsgi handler, fixes issue2550587.
+  Thanks to Thomas Arendsen Hein for reporting and to Intevation for
+  funding the fix.
 
 
 2009-10-09 1.4.10 (r4374)

roundup/cgi/wsgi_handler.py

@@ -10,7 +10,7 @@
 
 import roundup.instance
 from roundup.cgi import TranslationService
-from BaseHTTPServer import BaseHTTPRequestHandler
+from BaseHTTPServer import BaseHTTPRequestHandler, DEFAULT_ERROR_MESSAGE
 
 
 class Writer(object):
@@ -43,6 +43,14 @@ def __call__(self, environ, start_response):
         request.wfile = Writer(request)
         request.__wfile = None
 
+        if environ ['REQUEST_METHOD'] == 'OPTIONS':
+            code = 501
+            message, explain = BaseHTTPRequestHandler.responses[code]
+            request.start_response([('Content-Type', 'text/html'),
+                ('Connection', 'close')], code)
+            request.wfile.write(DEFAULT_ERROR_MESSAGE % locals())
+            return []
+
         tracker = roundup.instance.open(self.home, not self.debug)
 
         # need to strip the leading '/'