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Issue metadata

Status: Duplicate
Merged: issue 912553
Owner: ----
Closed: Dec 11
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug-Regression



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Not honouring System Proxy in case of proxy url

Reported by nimitag...@gmail.com, Dec 11

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36

Steps to reproduce the problem:
If I start my chrome 71 with --proxy-pac-url  then the loopback URL(localhost, 127.0.0.1) does not follow the system proxy in Windows.

Step to reproduce -
Set up a proxy, be sure to exclude localhost from bypass
Then open the chrome with a random pac file, then open a localhost or 127.0.0.1
It would not go through the proxy and will open directly.

What is the expected behavior?
In chrome 70 the --proxy-pac-url used, didnt effect the loopback addresses 

What went wrong?
If I start my chrome 71 with --proxy-pac-url  then the loopback URL(localhost, 127.0.0.1) does not follow the system proxy in Windows.

Did this work before? Yes 70

Chrome version: 71.0.3578.80  Channel: stable
OS Version: 10
Flash Version:
 
Components: Internals>Network>Proxy
Mergedinto: 912553
Status: Duplicate (was: Unconfirmed)
This unfortunately was a deliberate change to address a security issue.  Ideally we'd add some explicit way to opt-in to allowing proxying localhost when using a PAC script.
We could add something like --proxy-pac-bypass-list= as an analogous flag to --proxy-bypass-list, for the command line invocation case.

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