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I have a proxy server that requires a username and password to access (e.g., 127.0.0.1:8000, username: abcdef, password: 123456).

When I use Playwright to access a destination website through this proxy, the proxy server receives a blank Proxy-Authorization header, and the website cannot be accessed because the proxy authentication fails. According to the [Playwright documentation](https://playwright.dev/python/docs/api/class-browsertype#browser-type-launch said it support proxy authentication), proxy authentication should be supported.

Interestingly, when I test with WebKit, proxy authentication works as expected, but it does not work with Chromium.

Has anyone encountered this issue or knows how to resolve it? Is there a workaround to get proxy authentication working with Playwright and Chromium?

Thank you for your help!

my test code is:

from playwright.sync_api import sync_playwright
import subprocess
import os
# My Proxy
server = "http://127.0.0.1:8000"
password = "abcdef"
username = "123456"
dst_url="http://httpbin.org/ip"
def test_webkit_proxy():
 print("=== Solution1: use WebKit ===")
 with sync_playwright() as p:
 browser = p.webkit.launch()
 context = browser.new_context(
 proxy={
 "server": server,
 "username": username,
 "password": password
 }
 )
 page = context.new_page()
 try:
 response = page.goto(dst_url, timeout=30000)
 if response.status == 200:
 print(f"✅ WebKit success: {response.status}")
 else:
 print(f"❌ WebKit fail: {response.status}")
 print(f"response body: {response.text()}")
 except Exception as e:
 print(f"❌ WebKit fail: {e}")
 finally:
 browser.close()
def test_chromium_standard():
 print("=== Solution2: use Chromium standard ===")
 with sync_playwright() as p:
 browser = p.chromium.launch()
 context = browser.new_context(
 proxy={
 "server": server,
 "username": username,
 "password": password
 }
 )
 page = context.new_page()
 try:
 response = page.goto(dst_url, timeout=30000)
 if response.status == 200:
 print(f"✅ Chromium standard success: {response.status}")
 else:
 print(f"❌ Chromium standard fail: {response.status}")
 print(f"response body: {response.text()}")
 except Exception as e:
 print(f"❌ Chromium standard fail: {e}")
 finally:
 browser.close()
if __name__ == "__main__":
 test_webkit_proxy()
 test_chromium_standard()

I want to use the Playwright Python library with Chromium in a way that supports proxy authentication.