/usr/local/apache/htdocs/lib/public_html/book/WEBMASTER/proxyauto.txt Библиотека на Meta.Ua Примерный Java-скрипт с конфигуратором proxy
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Примерный java-скрипт для Automatic proxy configuration



Ответ: From Artem Belevich art.rtg@iae.nsk.su
подробнее об Proxy Autoconfig смотри Ў http://home.netscape.com/eng/mozilla/2.0/relnotes/demo/proxy-live.html

Более-менее рабочий вариант скрипта в довесок



DebugLevel = 0;

// Proxy hosts. First parameter - Enable/Disable flag
var nop = new Proxy( 1, "" );
var iae = new Proxy( 1, "proxy", "http:8000", "ftp:8000" );
var nsc = new Proxy( 1, "proxy.nsc.ru", "http:8080", "ftp:8080", "gopher:8080" );
var sun = new Proxy( 1, "sunsite.doc.ic.ac.uk", "http:3128", "ftp:3128");
var hpl = new Proxy( 0, "hplyot.obspm.fr", "http:6661" );

// No proxy
var nop_domain = new Domain( nop );

// Default proxy configuration
var def_domain = new Domain( nsc, iae );

// Proxy configuration if DNS fails
var dns_domain = new Domain( sun, hpl );

// Proxy configuration if host is given by address
var adr_domain = new Domain( sun, nsc, iae );

// Additional configurations
var sun_domain = new Domain( sun, hpl, nsc, iae );

/*
* Domains
*/
ProxyConfig.bindings[ "radio-msu.net" ] = nop_domain;
ProxyConfig.bindings.com = sun_domain;
ProxyConfig.bindings.ca = sun_domain;
ProxyConfig.bindings.edu = sun_domain;
ProxyConfig.bindings.net = sun_domain;
ProxyConfig.bindings.gov = sun_domain;
ProxyConfig.bindings.no = sun_domain;
ProxyConfig.bindings.nl = sun_domain;

/****************************************************************************
* IMPLEMENTATION *
****************************************************************************/
function Domain()
{
this.num = Domain.arguments.length;
this.getProxy = getProxy;

for( var i = 0; i < this.num; ++i )
this[ i ] = Domain.arguments[ i ];
}

function getProxy( proto )
{
var ret = "";

for( var i = 0; i < this.num; ++i )
ret += this[ i ].string( proto );
return ret;
}

function Proxy( flag, hst )
{
this.host = hst;
this.string = proxyString;
this.avail = flag;

this.num = 0;
for( var i = 2; i < Proxy.arguments.length; ++i )
{
var proxy = Proxy.arguments[ i ];
var delim = proxy.indexOf( ":" );
this[ this.num++ ] = new Proto( proxy.substring( 0, delim ),
proxy.substring( delim + 1, proxy.length ));
}
}

function proxyString( proto )
{
if( this.avail )
for( var i = 0; i < this.num; ++i )
if( this[ i ].protocol == proto )
return "PROXY " + this.host + ":" + this[ i ].port + ";";
return "";
}

function Proto( pr, po )
{
this.protocol = pr;
this.port = po;
}

function show_props( obj, obj_name )
{
var result = ""
for (var i in obj)
result += obj_name + "." + i + " = " + obj[i] + "\n"
return result;
}

/*
function isAddress( str )
{
for( var i = 0; i <= dnsDomainLevels( str ); ++i )
{
var dot = str.indexOf( "." );
var part1 = str.substring( 0, dot );
str = str.substring( dot + 1, str.length );
if( part1 != "0" && parseInt( part1 ) == 0 )
return false;
}
return true;
}
*/

/*
* "Main" program
*/
function FindProxyForURL( url, host )
{
var proto = url.substring( 0, url.indexOf( ":" ) );
var System = java.lang.System;
var result = "";

if( DebugLevel > 1 )
System.out.println( "Searching proxy for host '" + host + "'" );

/* if( isAddress( host ) )
{
// If host name is unknown
if( isInNet( host, myIpAddress(), "255.255.0.0") )
result = "DIRECT";
else
{
System.out.println( "Don't know how to determine hostname by address " + host );
result = adr_domain.getProxy( proto ) + "DIRECT";
}
}
else*/ if( !isPlainHostName( host )
&& !dnsDomainIs( host, ".nsk.su")
&& !dnsDomainIs( host, ".nsc.ru") )
// Look in configuration array
for( var dom in ProxyConfig.bindings )
{
if( DebugLevel > 1 )
System.out.println( "\tLooking for " + host + " in bindings." + dom );
if( dnsDomainIs( host, "." + dom ) )
{
result = ProxyConfig.bindings[ dom ].getProxy( proto );
if( DebugLevel > 1 )
System.out.println( "\t\tFound " + result );
break;
}
}
if( result.length == 0 )
{
// Not found in array - try to resolve host name
if( isResolvable( host ) )
{
if( DebugLevel > 1 )
System.out.println( "\t\t" + host + " has IP address " + dnsResolve( host ) );
if( isInNet( host, myIpAddress(), "255.255.0.0") )
result = "DIRECT";
else
result = def_domain.getProxy( proto ) + "DIRECT";
}
else
// DNS problem or - try additional default proxy
result = dns_domain.getProxy( proto );
}
else
result += "DIRECT";
if( DebugLevel > 1 )
System.out.println( "Using: " + result );
return result;
}

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