[TwitterBridge] increase guest token expiry time

[triatic]

An attempt to mitigate #2366 . In my own tests the guest token does not expire for two hours.

[em92]

Applied patch on my public instance. If everything is ok, I will merge this

[triatic]

I am still receiving the error periodically, but at least this edit will reduce the frequency of fetching the guest token.

[triatic]

Further testing reveals 3 hours is a safe expiry time.

[triatic]

I should add that it would be useful to get some testing on busier or quieter Twitter bridges as I am only hitting Twitter about 100 times every three hours. Therefore I can't really know whether I'm hitting the 3hr time limit or the 100 "uses per token" limit.

It might be that one or the other of those limits could be further increased.

[em92]

Checked this:

$ curl https://twitter.com | grep "gt="
})();</script><script nonce="OGU3OWQ4YmQtZDk2NS00ODJmLWI0MDMtMzRkMjk5ODEzYzA4">document.cookie = decodeURIComponent("gt=1472142906081349637; Max-Age=10800; Domain=.twitter.com; Path=/; Secure");</script>

That guest token for real expires in 3 hours.

The "100 token uses" is the other issue to deal with.

Good job!

[triatic]

Ah, checking the cookie expiry would have been a lot easier than the trial and error I was doing!