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Better HTTPS support in (web client)

From: Ludovic Courtès
Subject: Better HTTPS support in (web client)
Date: Fri, 10 Jan 2020 15:49:49 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)

Hello Guilers!

I’ve pushed a ‘wip-https-client’ branch that contains improvements for
HTTPS support in (web client) that I’d like to be part of Guile 3:

In a nutshell:

  • $https_proxy support and a ‘current-https-proxy’ parameter;

  • better TLS alert handling;

  • verification of server certificates (!).

You can test it with a program as simple as:

  (use-modules (web client))

      (lambda ()
        (http-get "";))

You can test how expired certificates are handled with:

  guix environment --ad-hoc libfaketime -- \
     faketime 2022-01-01 ./meta/guile /tmp/https.scm

To check whether $https_proxy is honored, try:

  https_proxy=http://localhost:8118 strace -e connect \
    ./meta/guile /tmp/https.scm

(I have Privoxy running as a proxy on that port.)

Feedback welcome!


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