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A Proxy Auto-Configuration file (PAC file) is a file which contains a function, FindProxyForURL(), which is used by the browser to determine whether requests (including HTTP, HTTPS, and FTP) should go directly to the destination or if they need to be forwarded through a web proxy server.
function FindProxyForURL(url, host) {
/* ... */
}
ret = FindProxyForURL(url, host)
See Proxy Auto-Configuration (PAC) file for details about how these are used and how to create new ones.
Learn more
General knowledge
- PAC on Wikipedia