PAC - فایل پیکربندی خودکار پروکسی (PAC).

function FindProxyForURL(url, host) {
  // ...
}

function FindProxyForURL(url, host) {

// If the hostname matches, send direct.
	if (dnsDomainIs(host, "intranet.domain.com") ||
		shExpMatch(host, "(*.abcdomain.com|abcdomain.com)"))
		return "DIRECT";

// If the protocol or URL matches, send direct.
	if (url.substring(0, 4)=="ftp:" ||
		shExpMatch(url, "http://abcdomain.com/folder/*"))
		return "DIRECT";

// If the requested website is hosted within the internal network, send direct.
	if (isPlainHostName(host) ||
		shExpMatch(host, "*.local") ||
		isInNet(dnsResolve(host), "10.0.0.0", "255.0.0.0") ||
		isInNet(dnsResolve(host), "172.16.0.0",  "255.240.0.0") ||
		isInNet(dnsResolve(host), "192.168.0.0",  "255.255.0.0") ||
		isInNet(dnsResolve(host), "127.0.0.0", "255.255.255.0"))
		return "DIRECT";

// If the IP address of the local machine is within a defined
// subnet, send to a specific proxy.
	if (isInNet(myIpAddress(), "10.10.5.0", "255.255.255.0"))
		return "PROXY 1.2.3.4:8080";

// DEFAULT RULE: All other traffic, use below proxies, in fail-over order.
	return "PROXY 4.5.6.7:8080; PROXY 7.8.9.10:8080";

}