[Twisted-web] HTTP client TODOs

[Scott Lamb]

Oh, and here's a couple more:

* It doesn't have any cookie management. You can add a raw header for 
cookies, but probably most clients will want more than that. I haven't 
looked at what twisted.web.client does.

* There's some circumstance in which timeouts can be canceled twice, 
yielding the traceback below. I haven't gotten it in a while, but I 
think it's still there.

What's the policy on bugs in branches? Should I add this to the tracker?


Traceback (most recent call last):
   File "./load_generator.py", line 204, in main
     reactor.run()
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/posixbase.py", 
line 206, in run
     self.mainLoop()
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/posixbase.py", 
line 217, in mainLoop
     self.doIteration(t)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/selectreactor.py", 
line 133, in doSelect
     _logrun(selectable, _drdw, selectable, method, dict)
--- <exception caught here> ---
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/python/log.py", 
line 58, in callWithLogger
     return callWithContext({"system": lp}, func, *args, **kw)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/python/log.py", 
line 43, in callWithContext
     return context.call({ILogContext: newCtx}, func, *args, **kw)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/python/context.py", 
line 59, in callWithContext
     return self.currentContext().callWithContext(ctx, func, *args, **kw)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/python/context.py", 
line 37, in callWithContext
     return func(*args,**kw)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/selectreactor.py", 
line 149, in _doReadOrWrite
     self._disconnectSelectable(selectable, why, method=="doRead")
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/posixbase.py", 
line 238, in _disconnectSelectable
     selectable.readConnectionLost(f)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/tcp.py", 
line 390, in readConnectionLost
     self.connectionLost(reason)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/tcp.py", 
line 555, in connectionLost
     Connection.connectionLost(self, reason)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/tcp.py", 
line 401, in connectionLost
     protocol.connectionLost(reason)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/web2/client/http.py", 
line 351, in connectionLost
     self._dealWithFailure(failure)
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/web2/client/http.py", 
line 323, in _dealWithFailure
     self.request.cancelTimeout()
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/web2/client/http.py", 
line 120, in cancelTimeout
     self._timeoutCall.cancel()
   File 
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/twisted/internet/base.py", 
line 75, in cancel
     raise error.AlreadyCalled
twisted.internet.error.AlreadyCalled: Tried to cancel an already-called 
event.