Add --proxy parameter to CLI interface

[kirillklimenko]

Please add --proxy parameter to CLI interface (https://playwright.dev/python/docs/network#http-proxy):

cli.py

def proxy_option(fn):
    click.option("--proxy", help="HTTP Proxy to use")(fn)
    return fn


# other options
@proxy_option
def shot(...):
    ...


def _browser_context(
    p,
    auth,
    interactive=False,
    devtools=False,
    retina=False,
    browser="chromium",
    user_agent=None,
    proxy=None,
    timeout=None,
    reduced_motion=False,
):
    browser_kwargs = dict(headless=not interactive, devtools=devtools, proxy=proxy)
    if browser == "chromium":
        browser_obj = p.chromium.launch(**browser_kwargs)
    elif browser == "firefox":
        browser_obj = p.firefox.launch(**browser_kwargs)
    elif browser == "webkit":
        browser_obj = p.webkit.launch(**browser_kwargs)
    else:
        browser_kwargs["channel"] = browser
        browser_obj = p.chromium.launch(**browser_kwargs)
    context_args = {}
    if auth:
        context_args["storage_state"] = json.load(auth)
    if retina:
        context_args["device_scale_factor"] = 2
    if reduced_motion:
        context_args["reduced_motion"] = "reduce"
    if user_agent is not None:
        context_args["user_agent"] = user_agent
    if proxy is not None:
        context_args["proxy"] = proxy
    context = browser_obj.new_context(**context_args)
    if timeout:
        context.set_default_timeout(timeout)
    return context, browser_obj

[simonw]

I'm happy to add this but I'm not sure how best to test this. Do you have any guidance on an easy way to test that this proxy option is working? Maybe an existing proxy I can run this through, or a proxy server that's easy to get running on macOS?

[kirillklimenko]

Sure, you can find free proxies on https://free-proxy-list.net/ and test the parameter with them.