[api] Revert to old 0.1.x codebase for bug testing and performance comparison

LICENSE

 
   node-http-proxy
 
-  Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, & Marak Squires
+  Copyright (c) 2010 Charlie Robbins & Marak Squires http://github.com/nodejitsu/node-http-proxy
 
   Permission is hereby granted, free of charge, to any person obtaining
   a copy of this software and associated documentation files (the

README.md

-# node-http-proxy - v0.2.0
+# node-http-proxy - v0.1.5
 
 <img src = "http://i.imgur.com/dSSUX.png"/>
 
@@ -52,9 +52,9 @@ see the [demo](http://github.com/nodejitsu/node-http-proxy/blob/master/demo.js)
       httpProxy = require('http-proxy');
 
   // create a proxy server with custom application logic
-  httpProxy.createServer(function (req, res, proxyRequest) {
+  httpProxy.createServer(function (req, res, proxy) {
     // Put your custom server logic here
-    proxyRequest(9000, 'localhost');
+    proxy.proxyRequest(9000, 'localhost', req, res);
   }).listen(8000);
 
   http.createServer(function (req, res){
@@ -65,28 +65,37 @@ see the [demo](http://github.com/nodejitsu/node-http-proxy/blob/master/demo.js)
   
 </pre>
 
-### How to proxy requests with latent operations (IO, etc.)
+### How to proxy requests with a regular http server
+<pre>
+  var http = require('http'),
+      httpProxy = require('http-proxy');
 
-node-http-proxy supports event buffering, that means if an event (like 'data', or 'end') is raised by the incoming request before you have a chance to perform your custom server logic, those events will be captured and re-raised when you later proxy the request. Here's a simple example:
+  // create a regular http server and proxy its handler
+  http.createServer(function (req, res){
+    var proxy = new httpProxy.HttpProxy;
+    proxy.watch(req, res);
+    // Put your custom server logic here
+    proxy.proxyRequest(9000, 'localhost', req, res);
+  }).listen(8001);
+
+  http.createServer(function (req, res){
+    res.writeHead(200, {'Content-Type': 'text/plain'});
+    res.write('request successfully proxied: ' + req.url +'\n' + JSON.stringify(req.headers, true, 2));
+    res.end();
+  }).listen(9000);
   
-<pre>
-  httpProxy.createServer(function (req, res, proxyRequest) {
-    setTimeout(function () {
-      proxyRequest(port, server);
-    }, latency);
-  }).listen(8081);
 </pre>
 
 ### Why doesn't node-http-proxy have more advanced features like x, y, or z?
 
 If you have a suggestion for a feature currently not supported, feel free to open a [support issue](http://github.com/nodejitsu/node-http-proxy/issues). node-http-proxy is designed to just proxy http requests from one server to another, but we will be soon releasing many other complimentary projects that can be used in conjunction with node-http-proxy.
 
-<br/>
+<br/><hr/>
 ### License
 
 (The MIT License)
 
-Copyright (c) 2010 Charlie Robbins, Mikeal Rogers & Marak Squires
+Copyright (c) 2010 Charlie Robbins & Marak Squires http://github.com/nodejitsu/
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

demo.js

@@ -45,17 +45,28 @@ httpProxy.createServer(9000, 'localhost').listen(8000);
 sys.puts('http proxy server'.blue + ' started '.green.bold + 'on port '.blue + '8000'.yellow);
 
 /****** http proxy server with latency******/ 
-httpProxy.createServer(function (req, res, proxyRequest){
+httpProxy.createServer(function (req, res, proxy){
   setTimeout(function(){
-    proxyRequest(9000, 'localhost', req, res);
-  }, 2000)
+    proxy.proxyRequest(9000, 'localhost', req, res);
+  }, 200)
 }).listen(8001);
 sys.puts('http proxy server '.blue + 'started '.green.bold + 'on port '.blue + '8001 '.yellow + 'with latency'.magenta.underline );
 
-/****** regular http server ******/ 
+/****** http server with proxyRequest handler and latency******/ 
 http.createServer(function (req, res){
+  var proxy = new httpProxy.HttpProxy;
+  proxy.watch(req, res);
+
+  setTimeout(function(){
+    proxy.proxyRequest(9000, 'localhost', req, res);
+  }, 200);
+}).listen(8002);
+sys.puts('http server '.blue + 'started '.green.bold + 'on port '.blue + '8002 '.yellow + 'with proxyRequest handler'.cyan.underline + ' and latency'.magenta);
+
+/****** regular http server ******/ 
+/*http.createServer(function (req, res){
   res.writeHead(200, {'Content-Type': 'text/plain'});
   res.write('request successfully proxied to: ' + req.url + '\n' + JSON.stringify(req.headers, true, 2));
   res.end();
 }).listen(9000);
-sys.puts('http server '.blue + 'started '.green.bold + 'on port '.blue + '9000 '.yellow);
+sys.puts('http server '.blue + 'started '.green.bold + 'on port '.blue + '9000 '.yellow);*/

lib/node-http-proxy.js

 /*
-  node-http-proxy.js: http proxy for node.js with pooling and event buffering
+  node-http-proxy.js: http proxy for node.js
 
-  Copyright (c) 2010 Mikeal Rogers, Charlie Robbins
+  Copyright (c) 2010 Charlie Robbins & Marak Squires http://github.com/nodejitsu/node-http-proxy
 
   Permission is hereby granted, free of charge, to any person obtaining
   a copy of this software and associated documentation files (the
@@ -26,9 +26,9 @@
  
 var sys = require('sys'),
     http = require('http'),
-    pool = require('pool'), 
-    url = require('url'),
+    eyes = require('eyes'),
     events = require('events'),
+    pool = require('pool'),
     min = 0, 
     max = 100;
 
@@ -38,25 +38,9 @@ manager.setMinClients(min);
 manager.setMaxClients(max);
 
 exports.createServer = function () {
-  var args, action, port, host;
-  args = Array.prototype.slice.call(arguments);
-  action = typeof args[args.length - 1] === 'function' && args.pop();
-  if (args[0]) port = args[0];
-  if (args[1]) host = args[1];
-  
-  var proxy = createProxy();
-  proxy.on('route', function (req, res, callback) {
-    var uri = url.parse(req.url);
-    if (action) {
-      action(req, res, callback);
-    } 
-    else {
-      port = port ? port : uri.port ? uri.port : 80;
-      host = host ? host : uri.hostname;
-      callback(port, host);
-    }
-  });
-  return proxy;
+  // Initialize the nodeProxy to start proxying requests
+  var proxy = new (exports.HttpProxy);
+  return proxy.createServer.apply(proxy, arguments);
 };
 
 exports.setMin = function (value) {
@@ -67,49 +51,131 @@ exports.setMin = function (value) {
 exports.setMax = function (value) {
   max = value;
   manager.setMaxClients(max);
-}
-
-var createProxy = function () {
-  var server = http.createServer(function (req, res) {
-    var buffers = [], 
-        b = function (chunk) { buffers.push(chunk) }, 
-        e = function () { e = false };
+};
 
-    req.on('data', b);
-    req.on('end', e);
+exports.HttpProxy = function () {
+  this.emitter = new(events.EventEmitter);
+  this.events = {};
+  this.listeners = {};
+  this.collisions = {};
+};
 
-    server.emit('route', req, res, function (port, hostname) {
-      var p = manager.getPool(port, hostname);    
+exports.HttpProxy.prototype = {
+  toArray: function (obj){
+    var len = obj.length,
+        arr = new Array(len);
+    for (var i = 0; i < len; ++i) {
+        arr[i] = obj[i];
+    }
+    return arr;
+  },
   
-      p.request(req.method, req.url, req.headers, function (reverse_proxy) {
-        var data = '';
-        reverse_proxy.on('error', function (err) {
-          res.writeHead(500, {'Content-Type': 'text/plain'});
+  createServer: function () {
+    var self = this,
+        server, 
+        port,
+        callback;
     
-          if(req.method !== 'HEAD') {
-            res.write('An error has occurred: ' + sys.puts(JSON.stringify(err)));
+    if (typeof(arguments[0]) === "function") {
+      callback = arguments[0];
+    }
+    else {
+      port = arguments[0];
+      server = arguments[1];
     }
     
-          res.end();
-        });
+    var proxyServer = http.createServer(function (req, res){
+      self.watch(req, res);
       
-        buffers.forEach(function (c) { 
-          data += c;
-          reverse_proxy.write(c);
+      // If we were passed a callback to process the request
+      // or response in some way, then call it.
+      if(callback) {
+        callback(req, res, self);
+      }
+      else {        
+        self.proxyRequest(port, server, req, res);
+      }
     });
     
-        buffers = null; 
-        req.removeListener('data', b);
-        sys.pump(req, reverse_proxy);
+    return proxyServer;
+  },
   
-        if (e) {
-          req.removeListener('end', e); 
-          req.addListener('end', function () { reverse_proxy.end() });
+  watch: function (req, res) {
+    var self = this;
+    
+    // Create a unique id for this request so
+    // we can reference it later. 
+    var id = new Date().getTime().toString();
+    
+    // If we get a request in the same tick, we need to 
+    // append to the id so it stays unique. 
+    if(typeof this.collisions[id] === 'undefined') {
+      this.collisions[id] = 0;
     }
     else {
-          reverse_proxy.end();
+      this.collisions[id]++;
+      id += this.collisions[id];
+    }
+    
+    req.id = id;
+    this.events[req.id] = [];
+    
+    this.listeners[req.id] = {
+      onData: function () {
+        self.events[req.id].push(['data'].concat(self.toArray(arguments)));
+      },
+      onEnd: function () {
+        self.events[req.id].push(['end'].concat(self.toArray(arguments)));
+      }
+    };
+
+    req.addListener('data', this.listeners[req.id].onData);
+    req.addListener('end', this.listeners[req.id].onEnd);
+    
+  },
+  
+  unwatch: function (req, res) {
+    req.removeListener('data', this.listeners[req.id].onData);
+    req.removeListener('end', this.listeners[req.id].onEnd);
+    
+    // Rebroadcast any events that have been buffered
+    while(this.events[req.id].length > 0) {
+      var args = this.events[req.id].shift();
+      req.emit.apply(req, args);
     }
      
+    // Remove the data from the event and listeners hashes
+    delete this.listeners[req.id];
+    delete this.events[req.id];
+    
+    // If this request id is a base time, delete it
+    if (typeof this.collisions[req.id] !== 'undefined') {
+      delete this.collisions[req.id];
+    }
+  },
+
+  proxyRequest: function (port, server, req, res) {
+    // Remark: nodeProxy.body exists solely for testability
+    this.body = '';
+    var self = this;
+    
+    // Open new HTTP request to internal resource with will act as a reverse proxy pass
+    var p =  manager.getPool(port, server);   
+    eyes.inspect(req.headers);
+    // Make request to internal server, passing along the method and headers
+    p.request(req.method, req.url, req.headers, function (reverse_proxy) {
+      // Add a listener for the connection timeout event
+      reverse_proxy.connection.addListener('error', function (err) {
+        res.writeHead(200, {'Content-Type': 'text/plain'});
+
+        if(req.method !== 'HEAD') {
+          res.write('An error has occurred: ' + sys.puts(JSON.stringify(err)));
+        }
+
+        res.end();
+      });
+
+
       // Add a listener for the reverse_proxy response event
       reverse_proxy.addListener('response', function (response) {
         if (response.headers.connection) {
@@ -117,23 +183,37 @@ var createProxy = function () {
           else response.headers.connection = 'close';
         }
         
-          // These two listeners are for testability and observation
-          // of what's passed back from the target server
+        // Set the response headers of the client response
+        res.writeHead(response.statusCode, response.headers);
+
+        // Add event handler for the proxied response in chunks
         response.addListener('data', function (chunk) {
-            data += chunk;
+          if(req.method !== 'HEAD') {
+            res.write(chunk, 'binary');
+            self.body += chunk;
+          }
         });
 
-          response.addListener('end', function() {
-            server.emit('proxy', null, data);
+        // Add event listener for end of proxied response
+        response.addListener('end', function () {
+          // Remark: Emit the end event for testability
+          self.emitter.emit('end', null, self.body);
+
+          res.end();
+        });
       });
 
-          // Set the response headers of the client response
-          res.writeHead(response.statusCode, response.headers);
+      // Chunk the client request body as chunks from the proxied request come in
+      req.addListener('data', function (chunk) {
+        reverse_proxy.write(chunk, 'binary');
+      })
 
-          sys.pump(response, res);
-        });
+      // At the end of the client request, we are going to stop the proxied request
+      req.addListener('end', function () {
+        reverse_proxy.end();
       });
+
+      self.unwatch(req, res);
     });
-  })
-  return server;
+  }
 };

package.json

 {
   "name": "http-proxy",
   "description": "A full-featured http reverse proxy for node.js",
-  "version": "0.2.0",
+  "version": "0.1.6",
   "author": "Charlie Robbins <charlie.robbins@gmail.com>",
   "contributors": [ 
-    { "name": "Mikeal Rogers", "email": "mikeal.rogers@gmail.com" }, 
-    { "name": "Marak Squires", "email": "marak.squires@gmail.com" },
+    { "name": "Marak Squires", "email": "marak.squires@gmail.com" } 
   ],
   "repository": {
       "type": "git",
@@ -13,10 +12,9 @@
   },
   "keywords": ["reverse", "proxy", "http"],
   "dependencies": {
-    "colors": ">= 0.3.0",
-    "pool": ">= 0.4.1"
+    "colors": ">= 0.3.0"
   },
   "main": "./lib/node-http-proxy",
   "scripts": { "test": "vows" },
-  "engines": { "node": ">= 0.2.0" }
+  "engines": { "node": ">= 0.1.98" }
 }
\ No newline at end of file

test/node-http-proxy-test.js

@@ -29,14 +29,14 @@ var vows = require('vows'),
     assert = require('assert'),
     http = require('http');
 
-var httpProxy = require('./../lib/node-http-proxy');
+var httpProxy = require('http-proxy');
 var testServers = {};
 
 //
 // Creates the reverse proxy server
 //
-var startProxyServer = function (port, server) {
-  var proxyServer = httpProxy.createServer(port, server); 
+var startProxyServer = function (port, server, proxy) {
+  var proxyServer = proxy.createServer(port, server); 
   proxyServer.listen(8080);
   return proxyServer;
 };
@@ -44,11 +44,11 @@ var startProxyServer = function (port, server) {
 // 
 // Creates the reverse proxy server with a specified latency
 //
-var startLatentProxyServer = function (port, server, latency) {
+var startLatentProxyServer = function (port, server, proxy, latency) {
   // Initialize the nodeProxy and start proxying the request
-  var proxyServer = httpProxy.createServer(function (req, res, proxy) {
+  var proxyServer = proxy.createServer(function (req, res, proxy) {
     setTimeout(function () {
-      proxy(port, server);
+      proxy.proxyRequest(port, server, req, res);
     }, latency);
   });
   
@@ -73,72 +73,57 @@ var startTargetServer = function (port) {
 //
 // The default test bootstrapper with no latency
 //
-var startTest = function (port) {
-  var proxyServer = startProxyServer(port, 'localhost'),
-      targetServer = startTargetServer(port);
-
+var startTest = function (proxy, port) {
   testServers.noLatency = [];
-  testServers.noLatency.push(proxyServer);
-  testServers.noLatency.push(targetServer);
-  return proxyServer;
+  testServers.noLatency.push(startProxyServer(port, 'localhost', proxy));
+  testServers.noLatency.push(startTargetServer(port));
 };
 
 //
 // The test bootstrapper with some latency
 //
-var startTestWithLatency = function (port) {
-  var proxyServer = startLatentProxyServer(port, 'localhost', 2000),
-      targetServer = startTargetServer(port);
-      
+var startTestWithLatency = function (proxy, port) {
   testServers.latency = [];
-  testServers.latency.push(proxyServer);
-  testServers.latency.push(targetServer);
-  return proxyServer;
+  testServers.latency.push(startLatentProxyServer(port, 'localhost', proxy, 2000));
+  testServers.latency.push(startTargetServer(port));
 };
 
-//var proxy = startTest(8082);
-//var latent = startTestWithLatency(8083);
-
 vows.describe('node-http-proxy').addBatch({
   "A node-http-proxy": {
     "when instantiated directly": {
       "and an incoming request is proxied to the helloNode server" : {
         "with no latency" : {
           topic: function () {
-            var proxyServer = startTest(8082);
-            proxyServer.on('proxy', this.callback);
+            var proxy = new (httpProxy.HttpProxy);
+            startTest(proxy, 8082);
+            proxy.emitter.addListener('end', this.callback);
 
             var client = http.createClient(8080, 'localhost');
             var request = client.request('GET', '/');
             request.end();
-          },
-          teardown: function () {
-            
           },
           "it should received 'hello world'": function (err, body) {
             assert.equal(body, 'hello world');
             testServers.noLatency.forEach(function (server) {
               server.close();
-            });
+            })
           }
         },
         "with latency": {
           topic: function () {
-            var proxyServer = startTestWithLatency(8083);
-            proxyServer.on('proxy', this.callback);
+            var proxy = new (httpProxy.HttpProxy);
+            startTestWithLatency(proxy, 8083);
+            proxy.emitter.addListener('end', this.callback);
 
             var client = http.createClient(8081, 'localhost');
             var request = client.request('GET', '/');
             request.end();
-          },
-          teardown: function () {
-            
           },
           "it should receive 'hello world'": function (err, body) {
             assert.equal(body, 'hello world');
             testServers.latency.forEach(function (server) {
               server.close();
-            });
+            })
           }
         }
       }