Add the possibility to update client proxy

[andrelambru]

There isn't a way to edit a Client() proxy without recreating it (and loosing the session).

On request module we have session.update(proxies=proxies) for example.

[lovelydinosaur]

Duplicate of #2618

[karpetrosyan]

Also, a good reference is: #3293 (comment)

[lovelydinosaur]

Thank you @karpetrosyan. ☺️

[karpetrosyan]

It seems like the question about dynamically changing transports/proxies is one of the common ones. Maybe we should mention it in the documentation as an example of transport.

[lovelydinosaur]

Neat thought, yep... if we did want to do this, let's start by opening a documentation issue for it.
Could be problematic that proxy rotation might typically be used to spam requests, I'd rather we didn't advocate for that.

[andrelambru]

Neat thought, yep... if we did want to do this, let's start by opening a documentation issue for it. Could be problematic that proxy rotation might typically be used to spam requests, I'd rather we didn't advocate for that.

That's true but if someone wants to spam he can already do with rotating proxies.

My use-case is web automation.