mirror of
https://github.com/http-party/node-http-proxy.git
synced 2025-12-08 20:59:18 +00:00
140 lines
3.4 KiB
JavaScript
140 lines
3.4 KiB
JavaScript
var httpProxy = exports,
|
||
extend = require('util')._extend,
|
||
parse_url = require('url').parse,
|
||
EE3 = require('eventemitter3').EventEmitter,
|
||
http = require('http'),
|
||
https = require('https'),
|
||
web = require('./passes/web-incoming'),
|
||
ws = require('./passes/ws-incoming');
|
||
|
||
httpProxy.Server = ProxyServer;
|
||
|
||
/**
|
||
* Returns a function that creates the loader for
|
||
* either `ws` or `web`'s passes.
|
||
*
|
||
* Examples:
|
||
*
|
||
* httpProxy.createRightProxy('ws')
|
||
* // => [Function]
|
||
*
|
||
* @param {String} Type Either 'ws' or 'web'
|
||
*
|
||
* @return {Function} Loader Function that when called returns an iterator for the right passes
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
function createRightProxy(type) {
|
||
return function(options) {
|
||
return function(req, res /*, [head], [opts] */) {
|
||
var passes = (type === 'ws') ? this.wsPasses : this.webPasses,
|
||
args = [].slice.call(arguments),
|
||
cntr = args.length - 1,
|
||
head, cbl;
|
||
|
||
/* optional args parse begin */
|
||
if(typeof args[cntr] === 'function') {
|
||
cbl = args[cntr];
|
||
|
||
cntr--;
|
||
}
|
||
|
||
if(
|
||
!(args[cntr] instanceof Buffer) &&
|
||
args[cntr] !== res
|
||
) {
|
||
//Copy global options
|
||
options = extend({}, options);
|
||
//Overwrite with request options
|
||
extend(options, args[cntr]);
|
||
|
||
cntr--;
|
||
}
|
||
|
||
if(args[cntr] instanceof Buffer) {
|
||
head = args[cntr];
|
||
}
|
||
|
||
/* optional args parse end */
|
||
|
||
['target', 'forward'].forEach(function(e) {
|
||
if (typeof options[e] === 'string')
|
||
options[e] = parse_url(options[e]);
|
||
});
|
||
|
||
|
||
for(var i=0; i < passes.length; i++) {
|
||
/**
|
||
* Call of passes functions
|
||
* pass(req, res, options, head)
|
||
*
|
||
* In WebSockets case the `res` variable
|
||
* refer to the connection socket
|
||
* pass(req, socket, options, head)
|
||
*/
|
||
if(passes[i].call(this, req, res, head, cbl)) { // passes can return a truthy value to halt the loop
|
||
break;
|
||
}
|
||
}
|
||
};
|
||
};
|
||
}
|
||
|
||
|
||
function ProxyServer(options) {
|
||
EE3.call(this);
|
||
|
||
this.web = createRightProxy('web')(options);
|
||
this.ws = createRightProxy('ws')(options);
|
||
this.options = options;
|
||
|
||
this.webPasses = Object.keys(web).map(function(pass) {
|
||
return web[pass];
|
||
});
|
||
|
||
this.wsPasses = Object.keys(ws).map(function(pass) {
|
||
return ws[pass];
|
||
});
|
||
}
|
||
|
||
require('util').inherits(ProxyServer, EE3);
|
||
|
||
ProxyServer.prototype.listen = function(port) {
|
||
var self = this,
|
||
closure = function(req, res) { self.web(req, res); };
|
||
|
||
this._server = this.options.ssl ?
|
||
https.createServer(this.options.ssl, closure) :
|
||
http.createServer(closure);
|
||
|
||
if(this.options.ws) {
|
||
this._server.on('upgrade', function(req, socket, head) { self.ws(req, socket, head); });
|
||
}
|
||
|
||
this._server.listen(port);
|
||
|
||
return this;
|
||
};
|
||
|
||
ProxyServer.prototype.before = function(passName, callback) {
|
||
var i = false;
|
||
this.passes.forEach(function(v, idx) {
|
||
if(v.name === passName) i = idx;
|
||
})
|
||
|
||
if(!i) throw new Error('No such pass');
|
||
|
||
this.passes.splice(i, 0, callback);
|
||
};
|
||
ProxyServer.prototype.after = function(passName, callback) {
|
||
var i = false;
|
||
this.passes.forEach(function(v, idx) {
|
||
if(v.name === passName) i = idx;
|
||
})
|
||
|
||
if(!i) throw new Error('No such pass');
|
||
|
||
this.passes.splice(i++, 0, callback);
|
||
};
|