Re: [twmode-users-en] "Failed to retrieve a request token"

[Tadashi M. <ta...@my...>]

Hi, Mr. Braun,

The problem is caused by the update of a SSL certificate for
api.twitter.com. The update is described at
https://dev.twitter.com/blog/rest-api-ssl-certificate-updates .

There are two ways to avoid the problem.

* Update twittering-mode.el.
  I have committed a patch to the repository on GitHub. It adds all CA
  certificates available on https://www.symantec.com/page.jsp?id=roots .
  The latest version will work without the problem. You can get it at
  https://github.com/hayamiz/twittering-mode/raw/master/twittering-mode.el
  or
  https://github.com/hayamiz/twittering-mode/raw/3.0.x/twittering-mode.el .

* Suppress the error.
  If it is difficult to update twittering-mode.el, you can suppress
  the error by the following configuration.
  (setq twittering-allow-insecure-server-cert t)

  The configuration may weaken security because it disables server
  authentication.

Please try it.

# To follow the update, I had added a root CA certificate
# `PCA-3G3.pem' to `twittering-mode.el' on GitHub at Dec 9. However,
# The new SSL certificate for api.twitter.com requires `PCA-3G5.pem'...
# Since twittering-mode.el now includes all root CA certificates on
# the above site, I hope that such a problem will not happen.

Regards,
Tadashi MATSUO