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Titan, the proposed upload protocol for Gemini

Alex Schroeder alex at gnu.org

Sat Jul 4 10:09:18 BST 2020

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Upon reading my mail the next day I'd like to add a few points.https://lists.orbitalfox.eu/archives/gemini/2020/002034.html

Titan, the name

I don't mind lel's Java client being called "Titan". After all, thereare many things that are called Titan – and Apache also named theirwebserver httpd. And, like I said, originally I called the protocolgemini+write... So, I don't know? I like the name Titan, of course. 😃

gnutls-cli

Here's an example of me updating a page with the content of test.txtusing gnutls-cli:

(sleep 1; \ echo "titan://alexschroeder.ch:1968/raw/Test;mime=text/plain;size="`wc--bytes < test.txt`";token=hello"; \ cat test.txt) | \ gnutls-cli --insecure localhost:1965

I'm using --insecure because of the self-signed certificate, and I'musing sleep 1 because gnutls-cli (at least on my system) isn'timmediately ready to accept ouput.

The drawback with this solution is that there's plenty of gnuttls-cliinfo shown that you don't really care about.

openssl

Here's an example of me updating a page with the content of test.txtusing openssl:

echo "titan://alexschroeder.ch:1968/raw/Test;mime=text/plain;size="`wc--bytes < test.txt`";token=hello" \ | cat - test.txt | openssl s_client --quiet --connectalexschroeder.ch:1968 2>/dev/null

Here I can use the --quiet flag to reduce openssl's output, and as therest is printed on stderr I can redirect stderr to /dev/null in orderto make the output really quiet.

Gemini Wiki on the web

The Gemini Wiki also serves HTTP (although it's an extremely simpleHTTP server: no content negotiation). That's why you can visitgemini://alexschroeder.ch:1968 on the web using https://alexschroeder.ch:1968 – Gemini Wiki installations just have tomake sure to use those Let's Encrypt certificates and not their self-signed ones because browsers are really picky and display all sorts ofwarnings. Gemini Wiki only serves the web as secondary citizen. Thereare no HTML forms to edit pages from the web. That only works using theTitan protocol.

CheersAlex