Using npm behind corporate proxy .pac

Question

I need to download several packages through npm but our corporate proxy configuration is a .pac file (i'm on windows)

I have already tried

npm config set proxy http://mydomain\username:password@1.2.3.4:8181/proxy.pac
npm config set https-proxy http://mydomain\username:password@1.2.3.4:8181/proxy.pac

or

npm config set proxy http://1.2.3.4:8181/proxy.pac
npm config set https-proxy http://1.2.3.4:8181/proxy.pac

but it doesn't work...

any suggestion? thanks

Answer 1

I had run into several issues with this and finally what I did is as follows:

1. Used Fiddler, with "Automatically Authenticate" selected

2. In fiddler custom rules, i added

   if (m_AutoAuth) {oSession["X-AutoAuth"] = "domain\\username:password";}
   

3. Finally in npm i set the proxy to http://localhost:8888

This worked fine.

Answer 2

Look for the url of the pac file in internet explorer lan settings and download the pac file from the URL configured. The pac file is just a javascript file with a function named FindProxyForURL which returns different proxy hosts in different scenarios.

Try to find a host in that pac file which you think is for general web traffic and plug it into .npmrc in C:\Users\<username>\.npmrc

proxy=http://<username>:<pass>@proxyhost:<port>
https-proxy=http://<uname>:<pass>@proxyhost:<port>

Even though you may login with your domain and username on your corporate machine, It is highly possible that the user active directory domain name is not required for the proxy, only the username and password (which may be different than your Active Directory login)

Don't forget to fiddle with escaping special password characters.

Answer 3

Download your .pac file. Open it in any editor and look for PROXY = "PROXY X.X.X.X:80;. You may have many proxies, copy any of them and run the following terminal commands:

npm config set proxy http://X.X.X.X:80
npm config set https-proxy http://X.X.X.X:80

Now you should be able to install any package!

Answer 4

I solved this problem this way:

1) I run this command:

npm config set strict-ssl false

2) Then set npm to run with http, instead of https:

npm config set registry "http://registry.npmjs.org/"

3) Then install your package

npm install <package name>

Answer 5

I ran into similar issue and found out that my npm config file ( .npmrc) is having wrong registry entry. commented it out and re ran npm install. it worked.

Answer 6

Try this, it was the only that worked for me:

npm --proxy http://:@proxyhost: --https-proxy http://:@proxyhost: --strict-ssl false install -g package

Pay atention to the option --strict-ssl false

Good luck.