[Mod-pubsub-developer] RE: pubsub.py now works with JavaScript applications (such as those in kn_apps)

[Adam R. <Ad...@Kn...>]

Additional comments...

Actually, running pubsub_test.cgi from the command line has two other =
server-side unit tests that don't work:
   4. content transform: FAILED (Event payload wrong: Kragen Sittler at =
./pubsub_test.cgi line 916.)
   5. evil characters in route-to URL: FAILED (bad result routing on =
http://.../kn/what/apps/pubsub_test.cgi/1045279259_11347_1/evil_character=
s_in_route_to_URL/1 -> =
http://.../kn/what/apps/pubsub_test.cgi/1045279259_11347_1/evil_character=
s_in_route_to_URL/2/../flurb: HTTP/1.0 500 Internal Server Error

Diagnosis for #4 is that off-host routes aren't working properly.

Diagnosis for #5 is that pubsub.py does not suffer from the "event =
naming bug" that
makes this test necessary for security in pubsub.cgi -- therefore, not =
really a bug here.

So to fix #1 and #4 below, off-host routes are needed in pubsub.py.  =
Probably the
fastest way to get there is to (finally) start building the client =
library, pubsublib.py :
      1. Write a tunnel packet parser.
      2. Write a simple response format decoder.
      3. Implement asynchronous http post, which includes request queue.
      4. Implement publish.
      5. Implement subscribe, which includes dispatcher.
      6. Implement unsubscribe, which is a recast of subscribe.
      7. Implement connect and disconnect, to robustify subscribe.

Other interesting items once that is done:
      1. Python Tkinter Ping client.
      2. Python Tkinter Chat client.
      3. Off-host routes in pubsub.py.
      4. Modify sitewatch app to use pubsublib.py.
         Note: can also modify it to use ping2's performance and/or =
/kn_statistics.
      5. Make a reaper.py which removes expired events.
         Note: this client can work for both pubsub.py and pubsub.cgi.

I'm also thinking about checking some performance testing tools into the =
distribution.

That's all for now.  Much to think about.

Elvis is everywhere,
  Adam



-----Original Message-----
From: Adam Rifkin=20
Sent: Friday, February 14, 2003 7:12 PM
To: 'mod...@li...'
Subject: pubsub.py now works with JavaScript applications (such as those
in kn_apps)


I checked some changes into CVS (but haven't yet made a new distribution =
tarball -- will do that next week) that fix pubsub.py so that it now =
properly vends live JavaScript applications.

This means that you can run pubsub.py as a standalone PubSub server, =
rather than do all the shenanigans of getting pubsub.cgi and mod_perl =
working with your Apache server.

As a result, all of the unit tests vended from kn_apps/test now work =
with pubsub.py (except the call to cgi-bin/pubsub_test.cgi since =
pubsub.py still has no cgi support).

Running pubsub_test.cgi from the command line, I see that all of the 55 =
server-side unit test work except:
   1. kn_time_t on forwarded HTTP posts: FAILED (Didn't get a connection =
at ./pubsub_test.cgi line 1293.
   2. replay of events: FAILED =
(http://.../kn/what/apps/pubsub_test.cgi/1045277635_11338_1/replay_of_eve=
nts/2/kn_journal: Didn't get expected event, =
kn_id=3D1045277683_11338_293 at ./pubsub_test.cgi line 1457)
   3. replay of events with warp factor: FAILED (Got bad =
do_method=3Dreplay result HTTP/1.0 400 (Bad Request) Method Not =
Supported

I'm guessing #1 means off host routes are unimplemented, and #2 and #3 =
mean do_method=3Dreplay is unimplemented.  Otherwise, looks like it's =
feature-complete with pubsub.py ...

In fact, even vending cookie_auth.js seems to work for lightweight =
authentication.

Changes made to the cvs check-in:
   1. Modified testlist.html to use mod_pubsub terminology.
   2. Modified pubsub.py so that do_method's have the right knroot.
   3. Modified pubsub.py so that urlroot is removed from the beginning =
of a topic.

So for those of y'all who want an all-events-in-memory, standalone =
PubSub server, look into using pubsub.py .  (Also note that it has 34 =
items on its "TODO" list before we believe it to be feature-complete =
with pubsub.cgi ... :)

Elvis has entered the building,
   Adam