If you do need to make HTTPS connections to a local server, for example to test an HTTPS-only service, you will need to create and use your own certificates. Here's one way to do it:
-1. Use [trustme-cli](https://github.com/sethmlarson/trustme-cli/) to generate a pair of server key/cert files, and a client cert file.
+1. Use [trustme](https://github.com/python-trio/trustme) to generate a pair of server key/cert files, and a client cert file.
1. Pass the server key/cert files when starting your local server. (This depends on the particular web server you're using. For example, [Uvicorn](https://www.uvicorn.org) provides the `--ssl-keyfile` and `--ssl-certfile` options.)
1. Tell HTTPX to use the certificates stored in `client.pem`: