Add cookie support

[rogeriochaves]

The user just need to have write permissions for the cookie.txt file

[joshdick]

I've thought about using CURLOPT_COOKIEJAR before, but I don't believe this is a good solution for multiple simultaneous users since they will all be sharing the same set of cookies.

As it is, this code may not work as intended anyway -- you may need to use CURLOPT_COOKIEFILE in conjunction with CURLOPT_COOKIEJAR (COOKIEJAR is the write location, while COOKIEFILE is the read location) but I haven't tried this myself.

[rogeriochaves]

@joshdick yeah, I didn't thought about the multiple simultaneous users case, thanks for noticing

[lesander]

PHP Session-specific cookies?

[joshdick]

@lesander This is mostly a note for myself :) Even with session-specific cookies, special care would need to be taken to make sure proxied sites don't unintentionally receive each others' cookies, even when originating from a single user, since the users' browser would see each different site as having identical origins (the proxy).

This StackOverflow answer is relevant to this idea.

[joshdick]

I just opened #69 for cookie support. It works in very basic testing but isn't production ready (yet); use it at your own risk!