On 06:46 am, ardesai@yahoo.com wrote:

Should http.py :: HTTPChannel.__first_line be an instance attribute instead of a class attribute?

It doesn't matter. It "becomes" an "instance attribute" as soon as it is assigned a value. This is probably covered in the Python documentation somewhere, but I can't find it.

I have a custom scenario where I sub-classed HTTPChannel for my sub- classed HTTPFactory.  In the DerivedHTTPChannel class I overrode the allContentReceived() method.

The problem is that you cannot set __first_line to 1 in a subclass named `DerivedHTTPChannel`. __first_line is a mangled attribute. See 9.6 on: http://docs.python.org/tutorial/classes.html Additionally, anything starting with "_" is private and if you use it, your code is more likely to be broken by a future release of Twisted. See http://twistedmatrix.com/trac/wiki/CompatibilityPolicy What are you trying to accomplish with your HTTPChannel subclass? Jean-Paul

I recently enabled persistent connections, but setting self.__first_line = 1 in the DerivedHTTPChannel was ineffective, and the first line of the next request threw an exception when it got parsed as an http header.  Similar question "probably" apply to other class attributes.

Should such attributes be instance attributes instead of class attributes? Or is it anticipated that any class who derives from HTTPChannel should override almost all the methods of the base class?

Thanks, Arun