Using HTTP Proxies

Unauthenticated proxies are simple, you need only configure the browser with the hostname and port.

Authenticated proxies are rather more complicated, (see RFC2617)

Using an unauthenticated HTTP proxy with Firefox

profile = {
    'network.proxy.http': YOUR_PROXY_SERVER_HOST,
    'network.proxy.http_port': YOUR_PROXY_SERVER_PORT,
    'network.proxy.ssl': YOUR_PROXY_SERVER_HOST,
    'network.proxy.ssl_port': YOUR_PROXY_SERVER_PORT,
    'network.proxy.type': 1
self.browser = Browser(self.browser_type, profile_preferences=profile)

Authenticated HTTP proxy with Firefox

If you have access to the browser window, then the same technique will work for an authenticated proxy, but you will have to type the username and password in manually.

If this is not possible, for example on a remote CI server, then it is not currently clear how to do this. This document will be updated when more information is known. If you can help, please follow up on