Pac File Tester

Tests a PAC file and returns its output.

Usage

As a CLI tool

npm install pac-file-tester -g
pac-file-tester -f http://your.site/proxy.pac -u http://www.google.com

# or with npx

npx pac-file-tester -f http://your.site/proxy.pac -u http://www.google.com

Options

• -f --file, the url/path of the pac file to test.
• -u --url, the url to test the pac file against.
• -i --ip, the IP address to return from myIpAddress()
• -c --compare, the url/path of another pac file to compare output & speed with. (Optional)
• -d --dns, a manual DNS entry, e.g. dns.google.com|8.8.8.8
• -v --verbose, enables verbose during operation

Pragmatically

npm install --save pac-file-tester

getFileContents(url: string): Promise<string>

Returns the contents of the given url, suppports http and file addresses.

const contents = await getFileContents('http://pac.example.com/proxy.pac')

testPacFile(file: string, url: string, options: Options)

Tests the PAC file for the given url.

Takes an optional options object with the following keys:

Key	Default	Description
ip	your current ip	The IP Address to return for myIpAddress()
dnsEntries	{}	DNS Entries to supply to the context. e.g. {'www.example.com': '1.2.3.4'}

Examples

Local file

Run a PAC file from disk for https://www.google.com.

const file = await getFileContents('file://./proxy.pac')

const result = await testPacFile(file, 'https://www.google.com')

Remote file with replaced IP

Run a PAC file from a web server for https://www.google.com whilst impersonating the IP address 192.168.2.10.

const file = await getFileContents('http://pac.example.com/proxy.pac')

const result = await testPacFile(file, 'https://www.google.com', {
  ip: '192.168.2.10'
})

Remote file with a custom DNS entry

Run a PAC file from a web server for https://www.google.com with a custom DNS entry for example.com that resolves to 127.0.0.1

const file = await getFileContents('http://pac.example.com/proxy.pac')

const result = await testPacFile(file, 'https://www.google.com', {
  dnsEntries: {'example.com': '127.0.0.1'}
})