modifying request object

Hi,

The Request object is currently read only.
I think it would be usefull to be able to modify request headers in a middleware for example.
Being able to add stuff in the request object is nice, but so is having code that don't rely on it (that event works when the middleware is not there)

[jashandeep-sohi]

Perhaps you are looking for Signals?

[asvetlov]

@jashandeep-sohi perhaps you muddled request and response.
Request.headers is immutable object (MultiDictProxy actually).

Cloning request with replacing headers is satisfactory solution. Other request's attributes may be added later.

[jashandeep-sohi]

@asvetlov Ahh, yes -- Been working with responses so much, every "r" word is a "response" in my head now ;-)

[asvetlov]

Fixed by #1361