Edge 79 /Chrome do not allow loading a PAC script from a file:// URI.Chrome/Edge may return different results than IE/WinINET/EdgeLegacy from the myIpAddress function when connected to a VPN.Internet Explorer/WinINET/Edge Legacy expose a getClientVersion API that is not defined in other PAC environments.Chrome/Edge/Firefox only call the FindProxyForURL function and do not call the Ex version.Internet Explorer/WinINET/Edge Legacy call the PAC script’s FindProxyForURLEx function ( introduced to unlock IPv6 support), if present, and FindProxyForURL if not.Chromium does not and will need to redetect the proxy each time the browser reopens. The WinHTTP Proxy Service caches WPAD determination across process launches.The WinHTTP Proxy Service caches proxy authentication credentials (in CredMan) and automatically reuses them across apps and browser launches Chromium does not.The -winhttp-proxy-resolver command line argument will direct Chrome/Edge to call out to Windows’ WinHTTP Proxy Service for PAC processing. ![]() when using DirectAccess), you might want to try using Windows’ proxy resolution code rather than the code within Chromium. Until the logging is enhanced, users can hit SHIFT ESC to launch the browser’s task manager and check to see whether the utility process is alive. because Citrix injected a DLL into it), there’s no mention of that crash in the NetLog it will just show DIRECT. One current limitation of the current logging is that if the V8 Proxy Resolver process… Search in the Events tab for PAC_JAVASCRIPT_ALERT events:Įven without adding new alert() calls, you can also look for HTTP_STREAM_JOB_CONTROLLER_PROXY_SERVER_RESOLVED events to see what proxy the proxy resolution process determined should be used. Save the NetLog JSON file and reload it into the NetLog viewer. Msedge.exe -log-net-log=C:\temp\logFull.json -net-log-capture-mode=IncludeSocketBytes Then, collect a NetLog trace from the browser: To use it, simply add alert() calls to your PAC script, like so:Īlert("!!!!!!!!! PAC script start parse !!!!!!!!") Īlert("Got request for (" url " with host: " host ")") Īlert("!!!!!!!!! PAC script done parse !!!!!!!!") ![]() One thing I’d like to call out is that Microsoft Edge’s new Chromium foundation introduces a convenient new debugging feature for debugging the behavior of Proxy AutoConfiguration (PAC) scripts. Proxy Switcher and Manager is an open-source project.I’ve written about Browser Proxy Configuration a few times over the years, and I’m delighted that Chromium has accurate
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