Cheatsheet

Some useful commands for development and testing.

Certificates

Following commands require OpenSSL to be installed. It is provided as openssl package in Arch Linux.

Generate self-signed TLS certificate:

openssl req -x509 -newkey rsa:4096 -sha256 -days 365 -noenc \
-keyout certs/xmpp.key -out certs/xmpp.pem \
-subj "/CN=example.com"

Print content of a TLS certificate:

openssl x509 -in certs/xmpp.pem -text

Make sure xmpp.key starts and ends with:

-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----