x/net/publicsuffix: automate periodic regeneration

[yaslama]

Please answer these questions before submitting your issue. Thanks!

1. What version of Go are you using (go version)?
   1.6.1
2. What operating system and processor architecture are you using (go env)?
   linux/amd64
3. What did you do?

I used golang.org/x/net/publicsuffix and it doesn't contain the last updated list

1. What did you expect to see?

An updated list

1. What did you see instead?

A list from 2016-03-01

The list is changing more than before. The trigger was LetsEncrypt but people begin to understand the security implications beside Letsencrypt.

[bradfitz]

@nigeltao, we should talk about this today.

[yaslama]

@bradfitz and @nigeltao, did you reach any conclusion about the update ?
Thanks a lot.

[bradfitz]

We talked about making some online serving mode where your program could fetch the latest data at runtime and in the background periodically, relieving of us of the need to regularly rebuild this and litter the git repo's history with huge binary blob updates every week.

If somebody wants to write that mode, that'd be great.

[weppos]

FYI to solve this problem I made available an alternative implementation that can parse a list dynamically: https://github.com/weppos/publicsuffix-go

There is an open ticket in the Let's Encrypt repo about using a different way to pull the PSL changes.
letsencrypt/boulder#1479

[yaslama]

To @Webpos, I think you mean https://github.com/weppos/publicsuffix-go

[weppos]

Indeed, wrong buffer. Thanks for pointing it out, I've updated the link.