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[minor] Style updates and whitespace cleaning for consistency

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indexzero 2011-07-29 22:26:00 -04:00 committed by Dominic Tarr
parent 8eaec35074
commit f0917a3f97
5 changed files with 242 additions and 160 deletions
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35
examples/body-decoder.js
View File

@ -1,11 +1,34 @@
#!/usr/local/bin/node
/*
body-decoder.js: Example of body-decoder middleware with node-http-proxy
Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, Fedor Indutny, & Marak Squires.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var httpProxy = require('http-proxy'),
http = require('http'),
util = require('util'),
colors = require('colors');
exports.bodyMod = function () {
console.log('middleware has been started.'.green);
return function (req, res, next) {
@ -16,16 +39,22 @@ exports.bodyMod = function () {
console.log('ON DATA')
total += data;
});
req.on('end', function () {
console.log('ON END')
console.log(total);
//
// This line, uncommented, hangs forever.
// proxy.proxyRequest(req, res, { port: 9000, host: 'localhost' });
// The following also hangs forever.
// next.proxyRequest(req, res, { port: 9000, host: 'localhost' });
})
//
});
//
// The following fires just fine.
//proxy.proxyRequest(req, res, { port: 9000, host: 'localhost' });
//
console.log('request proxied...'.blue);
}
}

14
examples/gzip-middleware.js
View File

@ -1,5 +1,5 @@
/*
gzip-middleware.js: Basic example of middleware in node-http-proxy
gzip-middleware.js: Basic example of `connect-gzip` middleware in node-http-proxy
Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, Fedor Indutny, Marak Squires, & Dominic Tarr.
@ -32,7 +32,6 @@ var util = require('util'),
//
// Basic Http Proxy Server
//
httpProxy.createServer(
require('connect-gzip').gzip({ matchType: /.?/ }),
9000, 'localhost'
@ -41,12 +40,11 @@ httpProxy.createServer(
//
// Target 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);
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);
util.puts('http proxy server'.blue + ' started '.green.bold + 'on port '.blue + '8000'.yellow);
util.puts('http server '.blue + 'started '.green.bold + 'on port '.blue + '9000 '.yellow);

53
examples/url-middleware.js
View File

@ -1,3 +1,29 @@
/*
url-middleware.js: Example of a simple url routing middleware for node-http-proxy
Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, Fedor Indutny, & Marak Squires.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var util = require('util'),
colors = require('colors'),
http = require('http'),
@ -10,13 +36,18 @@ var util = require('util'),
//
function matcher (url, dest) {
//
// First, turn the URL into a regex.
// NOTE: Turning user input directly into a Regular Expression is NOT SAFE.
//
var r = new RegExp(url.replace(/\//, '\\/'));
//
// This next block of code may look a little confusing.
// It returns a closure (anonymous function) for each URL to be matched,
// storing them in an array - on each request, if the URL matches one that has
// a function stored for it, the function will be called.
//
return function (url) {
var m = r(url)
if (!m) {
@ -24,7 +55,10 @@ function matcher (url, dest) {
}
var path = url.slice(m[0].length);
console.log('proxy:', url, '->', dest);
return {url: path, dest: dest};
return {
url: path,
dest: dest
};
}
}
@ -61,26 +95,29 @@ exports.urls = function (urls) {
}
}
//
// Now we set up our proxy.
//
httpProxy.createServer(
//
// This is where our middlewares go, with any options desired - in this case,
// the list of routes/URLs and their destinations.
//
exports.urls({
'/hello': { port: 9000, host: 'localhost' },
'/charlie': { port: 80, host: 'charlieistheman.com' },
'/google': { port: 80, host: 'google.com' }
})
});
).listen(8000);
//
// Target Http Server (to listen for requests on 'localhost')
//
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);
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);
// And finally, some colored startup output.
util.puts('http proxy server'.blue + ' started '.green.bold + 'on port '.blue + '8000'.yellow);

1
examples/web-socket-proxy.js
View File

@ -47,6 +47,7 @@ var server = http.createServer(function (req, res) {
res.writeHead(200);
res.end();
});
server.listen(8080);
//

299
lib/node-http-proxy.js
View File

@ -1,7 +1,7 @@
/*
node-http-proxy.js: http proxy for node.js
Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, Marak Squires, Fedor Indutny
Copyright (c) 2010 Charlie Robbins, Mikeal Rogers, Marak Squires, Fedor Indutny
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
@ -51,16 +51,16 @@ var _agents = {};
//
function _getAgent (host, port, secure) {
var Agent, id = [host, port].join(':');
if (!port) {
port = secure ? 443 : 80;
}
if (!_agents[id]) {
Agent = secure ? https.Agent : http.Agent;
_agents[id] = new Agent({
host: host,
_agents[id] = new Agent({
host: host,
port: port,
maxSockets: maxSockets
});
@ -70,17 +70,17 @@ function _getAgent (host, port, secure) {
}
//
// ### function _getProtocol (secure, outgoing)
// ### function _getProtocol (secure, outgoing)
// #### @secure {Object|boolean} Settings for `https`
// #### @outgoing {Object} Outgoing request options
// Returns the appropriate protocol based on the settings in
// Returns the appropriate protocol based on the settings in
// `secure`. If the protocol is `https` this function will update
// the options in `outgoing` as appropriate by adding `ca`, `key`,
// and `cert` if they exist in `secure`.
//
function _getProtocol (secure, outgoing) {
var protocol = secure ? https : http;
if (typeof secure === 'object') {
outgoing = outgoing || {};
['ca', 'cert', 'key'].forEach(function (prop) {
@ -89,7 +89,7 @@ function _getProtocol (secure, outgoing) {
}
})
}
return protocol;
}
@ -117,25 +117,27 @@ exports.setMaxSockets = function (value) {
// stack
// adapted from https://github.com/creationix/stack
//
function stack (middlewares, proxy) {
var handle;
middlewares.reverse().forEach(function (layer) {
var child = handle;
handle = function (req, res) {
var next = function (err) {
if (err) {
throw err;
//TODO: figure out where to send errors.
//return error(req, res, err);
}
child(req, res);
if (err) {
throw err;
//
// TODO: figure out where to send errors.
// return error(req, res, err);
//
}
child(req, res);
}
next.__proto__ = proxy;
layer(req, res, next);
};
});
return handle;
}
@ -152,48 +154,60 @@ function stack (middlewares, proxy) {
// * `httpPRoxy.createServer(function (req, res, proxy) { ... })`
//
exports.createServer = function () {
var args = Array.prototype.slice.call(arguments),
callback,
options = {}, port, host, forward, silent, proxy, server, middleware = [];
var args = Array.prototype.slice.call(arguments),
callback, forward,
port, host,
proxy, server,
options = {},
middleware = [],
silent;
args.forEach(function (arg) {
switch (typeof arg) {
case 'string': host = arg; break;
case 'number': port = arg; break;
case 'function': middleware.push(arg); break;
case 'object': options = arg; break;
};
});
var proxy = new HttpProxy(options);
if (port && host) {
//
// If we have a target host and port for the request
// then proxy to the specified location.
//
handler = function (req, res) {
proxy.proxyRequest(req, res, {
port: port,
host: host
});
}
if(middleware.length) middleware.push(handler)
}
else if (proxy.proxyTable) {
//
// If the proxy is configured with a ProxyTable
// instance then use that before failing.
//
handler = function (req, res) {
proxy.proxyRequest(req, res);
}
if(middleware.length) middleware.push(handler)
if (port && host) {
//
// If we have a target host and port for the request
// then proxy to the specified location.
//
handler = function (req, res) {
proxy.proxyRequest(req, res, {
port: port,
host: host
});
}
if(middleware.length) handler = stack(middleware, proxy);
if (middleware.length) {
middleware.push(handler);
}
}
else if (proxy.proxyTable) {
//
// If the proxy is configured with a ProxyTable
// instance then use that before failing.
//
handler = function (req, res) {
proxy.proxyRequest(req, res);
}
if (middleware.length) {
middleware.push(handler);
}
}
if (middleware.length) {
//handler = callback = middleware.shift()
//else if (middleware.length)
handler = callback = stack(middleware, proxy);
}
if (!handler) {
//
@ -202,37 +216,36 @@ exports.createServer = function () {
throw new Error('Cannot proxy without port, host, or router.')
}
server = options.https
server = options.https
? https.createServer(options.https, handler)
: http.createServer(handler);
server.on('close', function () {
proxy.close();
});
proxy.on('routes', function (routes) {
server.emit('routes', routes);
});
if (!callback) {
// WebSocket support: if callback is empty tunnel
// WebSocket support: if callback is empty tunnel
// websocket request automatically
server.on('upgrade', function (req, socket, head) {
// Tunnel websocket requests too
proxy.proxyWebSocketRequest(req, socket, head, {
port: port,
host: host
});
});
}
//
// Set the proxy on the server so it is available
// to the consumer of the server
//
server.proxy = proxy;
return server;
};
@ -253,23 +266,23 @@ exports.createServer = function () {
// host: 'localhost',
// port: 9001
// }
// }
// }
//
var HttpProxy = exports.HttpProxy = function (options) {
events.EventEmitter.call(this);
var self = this;
options = options || {};
//
// Setup basic proxying options
//
this.https = options.https;
this.forward = options.forward;
this.target = options.target || {};
//
// Setup additional options for WebSocket proxying. When forcing
// Setup additional options for WebSocket proxying. When forcing
// the WebSocket handshake to change the `sec-websocket-location`
// and `sec-websocket-origin` headers `options.source` **MUST**
// be provided or the operation will fail with an `origin mismatch`
@ -277,7 +290,7 @@ var HttpProxy = exports.HttpProxy = function (options) {
//
this.source = options.source || { host: 'localhost', port: 8000 };
this.changeOrigin = options.changeOrigin || false;
if (options.router) {
this.proxyTable = new ProxyTable(options.router, options.silent, options.hostnameOnly);
this.proxyTable.on('routes', function (routes) {
@ -290,10 +303,10 @@ var HttpProxy = exports.HttpProxy = function (options) {
util.inherits(HttpProxy, events.EventEmitter);
//
// ### function buffer (obj)
// ### function buffer (obj)
// #### @obj {Object} Object to pause events from
// Buffer `data` and `end` events from the given `obj`.
// Consumers of HttpProxy performing async tasks
// Consumers of HttpProxy performing async tasks
// __must__ utilize this utility, to re-emit data once
// the async operation has completed, otherwise these
// __events will be lost.__
@ -303,9 +316,9 @@ util.inherits(HttpProxy, events.EventEmitter);
// httpProxy.proxyRequest(req, res, host, port, buffer);
// });
//
// __Attribution:__ This approach is based heavily on
// __Attribution:__ This approach is based heavily on
// [Connect](https://github.com/senchalabs/connect/blob/master/lib/utils.js#L157).
// However, this is not a big leap from the implementation in node-http-proxy < 0.4.0.
// However, this is not a big leap from the implementation in node-http-proxy < 0.4.0.
// This simply chooses to manage the scope of the events on a new Object literal as opposed to
// [on the HttpProxy instance](https://github.com/nodejitsu/node-http-proxy/blob/v0.3.1/lib/node-http-proxy.js#L154).
//
@ -337,10 +350,12 @@ HttpProxy.prototype.buffer = function (obj) {
//
// ### function close ()
// Frees the resources associated with this instance,
// if they exist.
// if they exist.
//
HttpProxy.prototype.close = function () {
if (this.proxyTable) this.proxyTable.close();
if (this.proxyTable) {
this.proxyTable.close();
}
};
//
@ -357,18 +372,18 @@ HttpProxy.prototype.close = function () {
//
HttpProxy.prototype.proxyRequest = function (req, res, options) {
var self = this, errState = false, location, outgoing, protocol, reverseProxy;
//
// Create an empty options hash if none is passed.
// If default options have been passed to the constructor
// If default options have been passed to the constructor
// of this instance, use them by default.
//
options = options || {};
options.host = options.host || this.target.host;
options.port = options.port || this.target.port;
options.enableXForwarded =
options.enableXForwarded =
(undefined === options.enableXForwarded ? true : options.enableXForwarded);
//
// Check the proxy table for this instance to see if we need
// to get the proxy location for the request supplied. We will
@ -377,7 +392,7 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
//
if (this.proxyTable && !options.host) {
location = this.proxyTable.getProxyLocation(req);
//
// If no location is returned from the ProxyTable instance
// then respond with `404` since we do not have a valid proxy target.
@ -386,38 +401,38 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
res.writeHead(404);
return res.end();
}
//
// When using the ProxyTable in conjunction with an HttpProxy instance
// only the following arguments are valid:
//
//
// * `proxy.proxyRequest(req, res, { host: 'localhost' })`: This will be skipped
// * `proxy.proxyRequest(req, res, { buffer: buffer })`: Buffer will get updated appropriately
// * `proxy.proxyRequest(req, res)`: Options will be assigned appropriately.
// * `proxy.proxyRequest(req, res)`: Options will be assigned appropriately.
//
options.port = location.port;
options.host = location.host;
}
//
// Add common proxy headers to the request so that they can
// Add common proxy headers to the request so that they can
// be availible to the proxy target server:
//
//
// * `x-forwarded-for`: IP Address of the original request
// * `x-forwarded-proto`: Protocol of the original request
// * `x-forwarded-port`: Port of the original request.
// * `x-forwarded-port`: Port of the original request.
//
if (options.enableXForwarded == true) {
if (options.enableXForwarded === true) {
req.headers['x-forwarded-for'] = req.connection.remoteAddress || req.connection.socket.remoteAddress;
req.headers['x-forwarded-port'] = req.connection.remotePort || req.connection.socket.remotePort;
req.headers['x-forwarded-proto'] = res.connection.pair ? 'https' : 'http';
}
//
// Emit the `start` event indicating that we have begun the proxy operation.
//
this.emit('start', req, res, options);
//
// If forwarding is enabled for this instance, foward proxy the
// specified request to the address provided in `this.forward`
@ -426,16 +441,16 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
this.emit('forward', req, res, this.forward);
this._forwardRequest(req);
}
//
// #### function proxyError (err)
// #### @err {Error} Error contacting the proxy target
// Short-circuits `res` in the event of any error when
// Short-circuits `res` in the event of any error when
// contacting the proxy target at `host` / `port`.
//
function proxyError(err) {
errState = true;
//
// Emit an `error` event, allowing the application to use custom
// error handling. The error handler should end the response.
@ -458,10 +473,10 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
res.write('An error has occurred: ' + JSON.stringify(err));
}
}
res.end();
}
outgoing = {
host: options.host,
port: options.port,
@ -470,12 +485,12 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
path: req.url,
headers: req.headers
};
protocol = _getProtocol(options.https || this.target.https, outgoing);
// Open new HTTP request to internal resource with will act as a reverse proxy pass
reverseProxy = protocol.request(outgoing, function (response) {
// Process the `reverseProxy` `response` when it's received.
if (response.headers.connection) {
if (req.headers.connection) response.headers.connection = req.headers.connection;
@ -507,17 +522,17 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
if (!errState) {
reverseProxy.removeListener('error', proxyError);
res.end();
// Emit the `end` event now that we have completed proxying
self.emit('end', req, res);
}
});
});
// Handle 'error' events from the `reverseProxy`.
reverseProxy.once('error', proxyError);
// For each data `chunk` received from the incoming
// For each data `chunk` received from the incoming
// `req` write it to the `reverseProxy` request.
req.on('data', function (chunk) {
if (!errState) {
@ -526,8 +541,8 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
});
//
// When the incoming `req` ends, end the corresponding `reverseProxy`
// request unless we have entered an error state.
// When the incoming `req` ends, end the corresponding `reverseProxy`
// request unless we have entered an error state.
//
req.on('end', function () {
if (!errState) {
@ -540,7 +555,7 @@ HttpProxy.prototype.proxyRequest = function (req, res, options) {
options.buffer.resume();
}
};
//
// ### @private function _forwardRequest (req)
// #### @req {ServerRequest} Incoming HTTP Request to proxy.
@ -552,7 +567,7 @@ HttpProxy.prototype._forwardRequest = function (req) {
port = this.forward.port;
host = this.forward.host;
outgoing = {
host: host,
port: port,
@ -561,13 +576,13 @@ HttpProxy.prototype._forwardRequest = function (req) {
path: req.url,
headers: req.headers
};
// Force the `connection` header to be 'close' until
// node.js core re-implements 'keep-alive'.
outgoing.headers['connection'] = 'close';
protocol = _getProtocol(this.forward.https, outgoing);
// Open new HTTP request to internal resource with will act as a reverse proxy pass
forwardProxy = protocol.request(outgoing, function (response) {
//
@ -575,10 +590,10 @@ HttpProxy.prototype._forwardRequest = function (req) {
// Remark (indexzero): We will eventually emit a 'forward' event here for performance tuning.
//
});
// Add a listener for the connection timeout event.
//
// Remark: Ignoring this error in the event
// Remark: Ignoring this error in the event
// forward target doesn't exist.
//
forwardProxy.once('error', function (err) { });
@ -596,7 +611,7 @@ HttpProxy.prototype._forwardRequest = function (req) {
//
// ### function proxyWebSocketRequest (req, socket, head, options)
// #### @req {ServerRequest} Websocket request to proxy.
// #### @req {ServerRequest} Websocket request to proxy.
// #### @socket {net.Socket} Socket for the underlying HTTP request
// #### @head {string} Headers for the Websocket request.
// #### @options {Object} Options to use when proxying this request.
@ -607,28 +622,30 @@ HttpProxy.prototype._forwardRequest = function (req) {
// options.https {Object|boolean} Settings for https.
//
HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options) {
var self = this,
var self = this,
listeners = {},
errState = false,
errState = false,
CRLF = '\r\n',
outgoing;
options = options || {};
options.host = options.host || this.target.host;
options.port = options.port || this.target.port;
if (this.proxyTable && !options.host) {
location = this.proxyTable.getProxyLocation(req);
if (!location) {
res.writeHead(404);
return res.end();
}
options.port = location.port;
options.host = location.host;
}
//
// WebSocket requests must have the `GET` method and
// WebSocket requests must have the `GET` method and
// the `upgrade:websocket` header
//
if (req.method !== 'GET' || req.headers.upgrade.toLowerCase() !== 'websocket') {
@ -637,7 +654,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
//
return;
}
//
// Helper function for setting appropriate socket values:
// 1. Turn of all bufferings
@ -654,14 +671,14 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
else if (socket.pair.cleartext.socket.setKeepAlive) {
socket.pair.cleartext.socket.setKeepAlive(true, 0);
}
}
}
else {
socket.setEncoding('utf8');
}
}
//
// On `upgrade` from the Agent socket, listen to
// On `upgrade` from the Agent socket, listen to
// the appropriate events.
//
function onUpgrade (reverseProxy, proxySocket) {
@ -670,7 +687,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
socket.end();
return;
}
//
// Any incoming data on this WebSocket to the proxy target
// will be written to the `reverseProxy` socket.
@ -680,7 +697,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
try {
self.emit('websocket:outgoing', req, socket, head, data);
reverseProxy.incoming.socket.write(data);
}
}
catch (e) {
reverseProxy.incoming.socket.end();
proxySocket.end();
@ -696,15 +713,15 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
try {
self.emit('websocket:incoming', reverseProxy, reverseProxy.incoming, head, data);
proxySocket.write(data);
}
}
catch (e) {
proxySocket.end();
socket.end();
}
});
//
// Helper function to detach all event listeners
// Helper function to detach all event listeners
// from `reverseProxy` and `proxySocket`.
//
function detach() {
@ -715,19 +732,19 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
}
//
// If the incoming `proxySocket` socket closes, then
// detach all event listeners.
// If the incoming `proxySocket` socket closes, then
// detach all event listeners.
//
proxySocket.on('end', listeners.onIncomingClose = function() {
reverseProxy.incoming.socket.end();
detach();
// Emit the `end` event now that we have completed proxying
self.emit('websocket:end', req, socket, head);
});
//
// If the `reverseProxy` socket closes, then detach all
// If the `reverseProxy` socket closes, then detach all
// event listeners.
//
reverseProxy.incoming.socket.on('end', listeners.onOutgoingClose = function() {
@ -738,12 +755,12 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
// Setup the incoming client socket.
_socket(socket);
function getPort (port) {
port = port || 80;
return port - 80 === 0 ? '' : ':' + port
}
//
// Get the protocol, and host for this request and create an instance
// of `http.Agent` or `https.Agent` from the pool managed by `node-http-proxy`.
@ -758,7 +775,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
req.headers.host = remoteHost;
req.headers.origin = protocolName + '://' + remoteHost;
}
//
// Make the outgoing WebSocket request
//
@ -772,7 +789,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
var reverseProxy = agent.appendMessage(outgoing);
//
// On any errors from the `reverseProxy` emit the
// On any errors from the `reverseProxy` emit the
// `webSocketProxyError` and close the appropriate
// connections.
//
@ -781,14 +798,14 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
if (self.emit('webSocketProxyError', req, socket, head)) {
return;
}
socket.end();
}
//
// Here we set the incoming `req`, `socket` and `head` data to the outgoing
// request so that we can reuse this data later on in the closure scope
// available to the `upgrade` event. This bookkeeping is not tracked anywhere
// available to the `upgrade` event. This bookkeeping is not tracked anywhere
// in nodejs core and is **very** specific to proxying WebSockets.
//
reverseProxy.agent = agent;
@ -797,27 +814,27 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
socket: socket,
head: head
};
//
// If the agent for this particular `host` and `port` combination
// is not already listening for the `upgrade` event, then do so once.
// This will force us not to disconnect.
// This will force us not to disconnect.
//
// In addition, it's important to note the closure scope here. Since
// there is no mapping of the
// there is no mapping of the
//
if (!agent._events || agent._events['upgrade'].length === 0) {
agent.on('upgrade', function (_, remoteSocket, head) {
//
// Prepare the socket for the reverseProxy request and begin to
// stream data between the two sockets. Here it is important to
// Prepare the socket for the reverseProxy request and begin to
// stream data between the two sockets. Here it is important to
// note that `remoteSocket._httpMessage === reverseProxy`.
//
_socket(remoteSocket, true);
onUpgrade(remoteSocket._httpMessage, remoteSocket);
});
}
//
// If the reverseProxy connection has an underlying socket,
// then execute the WebSocket handshake.
@ -826,9 +843,9 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
reverseProxy.socket.on('data', function handshake (data) {
//
// Ok, kind of harmfull part of code. Socket.IO sends a hash
// at the end of handshake if protocol === 76, but we need
// to replace 'host' and 'origin' in response so we split
// data to printable data and to non-printable. (Non-printable
// at the end of handshake if protocol === 76, but we need
// to replace 'host' and 'origin' in response so we split
// data to printable data and to non-printable. (Non-printable
// will come after double-CRLF).
//
var sdata = data.toString();
@ -838,7 +855,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
// Get the Non-Printable data
data = data.slice(Buffer.byteLength(sdata), data.length);
if (self.https && !self.target.https) {
//
// If the proxy server is running HTTPS but the client is running
@ -850,12 +867,12 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
try {
//
// Write the printable and non-printable data to the socket
// from the original incoming request.
//
// from the original incoming request.
//
self.emit('websocket:handshake', req, socket, head, sdata, data);
socket.write(sdata);
socket.write(data);
}
}
catch (ex) {
proxyError(ex)
}
@ -867,7 +884,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
reverseProxy.socket.removeListener('data', handshake);
});
}
reverseProxy.on('error', proxyError);
try {
@ -875,11 +892,11 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
// Attempt to write the upgrade-head to the reverseProxy request.
//
reverseProxy.write(head);
}
}
catch (ex) {
proxyError(ex);
}
//
// If we have been passed buffered data, resume it.
//