[minion-cvs] Tell HTTP proxies and friends not to cache directories.

[nickm@seul.org (Nick Mathewson)]

Update of /home/minion/cvsroot/src/minion/lib/mixminion
In directory moria.mit.edu:/tmp/cvs-serv31791/lib/mixminion

Modified Files:
	ClientDirectory.py 
Log Message:
Tell HTTP proxies and friends not to cache directories.

Index: ClientDirectory.py
===================================================================
RCS file: /home/minion/cvsroot/src/minion/lib/mixminion/ClientDirectory.py,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -d -r1.12 -r1.13
--- ClientDirectory.py	7 Nov 2003 10:43:18 -0000	1.12
+++ ClientDirectory.py	9 Nov 2003 23:28:10 -0000	1.13
@@ -112,7 +112,13 @@
         if timeout: mixminion.NetUtils.setGlobalTimeout(timeout)
         try:
             try:
-                infile = urllib2.urlopen(url)
+                # Tell HTTP proxies and their ilk not to cache the directory.
+                # Really, the directory server should set an Expires header 
+                # in its response, but that's harder.
+                request = urllib2.Request(url, 
+                          headers={ 'Pragma' : 'no-cache',
+                                    'Cache-Control' : 'no-cache', })
+                infile = urllib2.urlopen(request)
             except IOError, e:
                 raise UIError(
                     ("Couldn't connect to directory server: %s.\n"