# Configuring PRAW

- Configuration Options
  - Basic Configuration Options
  - OAuth Configuration Options
  - Reddit Site Configuration Options
  - Custom Configuration Options

Configuration options can be provided to PRAW in one of three ways:

- praw.ini Files
- Keyword Arguments to `Reddit`
- PRAW Environment Variables

Environment variables have the highest priority, followed by keyword arguments to `Reddit`, and finally settings in `praw.ini` files.

## Using an HTTP or HTTPS proxy with PRAW

PRAW internally relies upon the requests package to handle HTTP requests. Requests supports use of `HTTP_PROXY` and `HTTPS_PROXY` environment variables in order to proxy HTTP and HTTPS requests respectively [ref].

Given that PRAW exclusively communicates with Reddit via HTTPS, only the `HTTPS_PROXY` option should be required.

For example, if you have a script named `prawbot.py`, the `HTTPS_PROXY` environment variable can be provided on the command line like so:

    HTTPS_PROXY=https://localhost:3128 ./prawbot.py

## Configuring a custom requests Session

PRAW uses requests to handle networking. If your use-case requires custom configuration, it is possible to configure a Session and then use it with PRAW.

For example, some networks use self-signed SSL certificates when connecting to HTTPS sites. By default, this would raise an exception in Requests. To use a self-signed SSL certificate without an exception from Requests, first export the certificate as a `.pem` file. Then configure PRAW like so:

    import praw
    from requests import Session

    session = Session()
    session.verify = '/path/to/certfile.pem'
    reddit = praw.Reddit(client_id='SI8pN3DSbt0zor',
                         client_secret='xaxkj7HNh8kwg8e5t4m6KvSrbTI',
                         password='1guiwevlfo00esyy',
                         requestor_kwargs={'session': session},  # pass Session
                         user_agent='testscript by /u/fakebot3',
                         username='fakebot3')

The code above creates a Session and configures it to use a custom certificate, then passes it as a parameter when creating the `Reddit` instance. Note that the example above uses a Password Flow authentication type, but this method will work for any authentication type.