proxy.pac

function FindProxyForURL(url, host) {
  if (url.substring(0, 5) !== "http:") { return "DIRECT"; }

  if (isPlainHostName(host)) { return "DIRECT"; }
  if (shExpMatch(host, "*.local")) { return "DIRECT"; }

  var resolvedHost = dnsResolve(host);
  if (isInNet(resolvedHost, "10.0.0.0", "255.0.0.0")) { return "DIRECT"; }
  if (isInNet(resolvedHost, "172.16.0.0",  "255.240.0.0")) { return "DIRECT"; }
  if (isInNet(resolvedHost, "192.168.0.0", "255.255.0.0")) { return "DIRECT"; }
  if (isInNet(resolvedHost, "127.0.0.0", "255.255.255.0")) { return "DIRECT"; }

  return "PROXY 10.0.1.2:3128; DIRECT";
}