PAC Automatic Proxy

Recently read the HTTP authoritative guide in the introduction of the agent, there are many agents, today, mainly to say automatic proxy PAC

The PAC (Proxy Auto Config) is a script, and by writing this script, we can let the system determine which Proxy to use for online

The PAC file is in plain text format and is actually a JavaScript file.

Be sure to define the Function FindProxyForURL in the PAC file

The parameter URL is the URL that the user enters, and the parameter host is the host name in the URL. function FindProxyForURL (URL, host) {...}

This method needs to return a proxy dynamic group

Value	Describe	Sample Example
DIRECT	Direct online and not via Proxy	return "DIRECT";
PROXY Host:port	Using the specified Proxy servo machine	return "192.168.22.22:3128;192.168.22.23:3128";
SOCKS Host:port	Using the specified Socks servo machine	return "SOCKS5 127.0.0.1:1080; SOCKS 127.0.0.1:1080; DIRECT; ";

I'll explain the following example (in fact, the order problem):

1: First through the ' SOCKS5 127.0.0.1:1080 ' This SOCKS5 proxy connection

2: If 1 does not, through the ' SOCKS 127.0.0.1:1080 ' This SOCKS proxy connection

3: If the front is not, then directly connect not to go Agent

Complete case

Case one:

var domains = {     "google.com":  1 ,     "facebook.com": 1,     "bing.com": 1};var proxy =   "socks5 127.0.0.1:1080; socks 127.0.0.1:1080; direct;"; var direct =  ' direct; '; Function findproxyforurl (url, host)  {    var lastPos;     do {        if  (Domains.hasownproperty (host))  {            return proxy;         }        lastPos =  Host.indexof ('. ')  + 1;        host = host.slice (LastPos);     } while  (lastpos >= 1);     return direct;} 

Case TWO:

function FindProxyForURL (URL, host) {if (shExpMatch (URL, "*.google.com/*")) {return ' PROXY 192.168.22.22:3128 '     ;     } if (shExpMatch (URL, "*.wikipedia.com:*/*")) {return "SOCKS5 www.vincentguo.cn:1080";     } if (isInNet (host, "10.0.0.0", "255.0.0.0")) {return "DIRECT"; } return "DIRECT; PROXY 192.168.22.22:3128; SOCKS5 www.vincentguo.cn:1080 "; }

A PAC file can be used with JavaScript functions

isPlainHostName	The host name that the isPlainHostName (host) host obtains from the URL. This Function will determine if the host is not domain-inclusive. If it is, return true, or return False if it is included.
dnsDomainIs	Host name of the dnsDomainIs (host domain) host that was obtained by the URL. Domain that is specified by domain. This Function will determine if the host is part of domain domains. If it is, then return true; no, return false.
localHostOrDomainIs	localHostOrDomainIs (host, Hostdom) hosts the hostname obtained by the URL. Hostdom the full domain name. This Function determines whether the host is hostdom, or if host is the hostname of hostdom. If it is, then return true; no, return false.
Isresolvable	The host name that the isresolvable (host) host obtains from the URL. This Function will attempt to resolve the host through DNS, return True if the parse succeeds, or return false.
isInNet	isInNet (host, pattern, mask) host name, which can be Domain name or IP. If it is Domain Name, the IP is detected through DNS. Pattern IP. Mask corresponds to the mask of pattern. This Function will host whether it is within the specified IP range, or return True if it is, otherwise return false.
Dnsresolve	Dnsresolve host name to be clear through DNS. This Function parses the Host,return value through DNS as the result of parsing.
myIpAddress	myIpAddress () This Function will return the IP address of the computer where the browser is located.
dnsDomainLevels	The host name that the dnsDomainLevels (host) host obtains from the URL. This Function will return the host's Domain layer number (the number of points).
shExpMatch	shExpMatch (str, shexp) STR is being compared to a string. Shexp the conditions of the comparison. This Function is more than the SHEXP expression for str (this expression is shell expression and not regular expressions). If it is, return true; otherwise return false.
Weekdayrange
DateRange
Timerange

I use the FQ software is to use PAC, see the effect

Reference: http://findproxyforurl.com/pac-functions/

Original address: PAC Auto Agent
Tags: PAC http proxy shadowsocks socks SOCKS5

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PAC Automatic Proxy