init

node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js

@@ -0,0 +1,194 @@
+var httpNative   = require('http'),
+    httpsNative  = require('https'),
+    web_o  = require('./web-outgoing'),
+    common = require('../common'),
+    followRedirects = require('follow-redirects');
+
+web_o = Object.keys(web_o).map(function(pass) {
+  return web_o[pass];
+});
+
+var nativeAgents = { http: httpNative, https: httpsNative };
+
+/*!
+ * Array of passes.
+ *
+ * A `pass` is just a function that is executed on `req, res, options`
+ * so that you can easily add new checks while still keeping the base
+ * flexible.
+ */
+
+
+module.exports = {
+
+  /**
+   * Sets `content-length` to '0' if request is of DELETE type.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {Object} Options Config object passed to the proxy
+   *
+   * @api private
+   */
+
+  deleteLength: function deleteLength(req, res, options) {
+    if((req.method === 'DELETE' || req.method === 'OPTIONS')
+       && !req.headers['content-length']) {
+      req.headers['content-length'] = '0';
+      delete req.headers['transfer-encoding'];
+    }
+  },
+
+  /**
+   * Sets timeout in request socket if it was specified in options.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {Object} Options Config object passed to the proxy
+   *
+   * @api private
+   */
+
+  timeout: function timeout(req, res, options) {
+    if(options.timeout) {
+      req.socket.setTimeout(options.timeout);
+    }
+  },
+
+  /**
+   * Sets `x-forwarded-*` headers if specified in config.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {Object} Options Config object passed to the proxy
+   *
+   * @api private
+   */
+
+  XHeaders: function XHeaders(req, res, options) {
+    if(!options.xfwd) return;
+
+    var encrypted = req.isSpdy || common.hasEncryptedConnection(req);
+    var values = {
+      for  : req.connection.remoteAddress || req.socket.remoteAddress,
+      port : common.getPort(req),
+      proto: encrypted ? 'https' : 'http'
+    };
+
+    ['for', 'port', 'proto'].forEach(function(header) {
+      req.headers['x-forwarded-' + header] =
+        (req.headers['x-forwarded-' + header] || '') +
+        (req.headers['x-forwarded-' + header] ? ',' : '') +
+        values[header];
+    });
+
+    req.headers['x-forwarded-host'] = req.headers['x-forwarded-host'] || req.headers['host'] || '';
+  },
+
+  /**
+   * Does the actual proxying. If `forward` is enabled fires up
+   * a ForwardStream, same happens for ProxyStream. The request
+   * just dies otherwise.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {Object} Options Config object passed to the proxy
+   *
+   * @api private
+   */
+
+  stream: function stream(req, res, options, _, server, clb) {
+
+    // And we begin!
+    server.emit('start', req, res, options.target || options.forward);
+
+    var agents = options.followRedirects ? followRedirects : nativeAgents;
+    var http = agents.http;
+    var https = agents.https;
+
+    if(options.forward) {
+      // If forward enable, so just pipe the request
+      var forwardReq = (options.forward.protocol === 'https:' ? https : http).request(
+        common.setupOutgoing(options.ssl || {}, options, req, 'forward')
+      );
+
+      // error handler (e.g. ECONNRESET, ECONNREFUSED)
+      // Handle errors on incoming request as well as it makes sense to
+      var forwardError = createErrorHandler(forwardReq, options.forward);
+      req.on('error', forwardError);
+      forwardReq.on('error', forwardError);
+
+      (options.buffer || req).pipe(forwardReq);
+      if(!options.target) { return res.end(); }
+    }
+
+    // Request initalization
+    var proxyReq = (options.target.protocol === 'https:' ? https : http).request(
+      common.setupOutgoing(options.ssl || {}, options, req)
+    );
+
+    // Enable developers to modify the proxyReq before headers are sent
+    proxyReq.on('socket', function(socket) {
+      if(server && !proxyReq.getHeader('expect')) {
+        server.emit('proxyReq', proxyReq, req, res, options);
+      }
+    });
+
+    // allow outgoing socket to timeout so that we could
+    // show an error page at the initial request
+    if(options.proxyTimeout) {
+      proxyReq.setTimeout(options.proxyTimeout, function() {
+         proxyReq.abort();
+      });
+    }
+
+    // Ensure we abort proxy if request is aborted
+    req.on('aborted', function () {
+      proxyReq.abort();
+    });
+
+    // handle errors in proxy and incoming request, just like for forward proxy
+    var proxyError = createErrorHandler(proxyReq, options.target);
+    req.on('error', proxyError);
+    proxyReq.on('error', proxyError);
+
+    function createErrorHandler(proxyReq, url) {
+      return function proxyError(err) {
+        if (req.socket.destroyed && err.code === 'ECONNRESET') {
+          server.emit('econnreset', err, req, res, url);
+          return proxyReq.abort();
+        }
+
+        if (clb) {
+          clb(err, req, res, url);
+        } else {
+          server.emit('error', err, req, res, url);
+        }
+      }
+    }
+
+    (options.buffer || req).pipe(proxyReq);
+
+    proxyReq.on('response', function(proxyRes) {
+      if(server) { server.emit('proxyRes', proxyRes, req, res); }
+
+      if(!res.headersSent && !options.selfHandleResponse) {
+        for(var i=0; i < web_o.length; i++) {
+          if(web_o[i](req, res, proxyRes, options)) { break; }
+        }
+      }
+
+      if (!res.finished) {
+        // Allow us to listen when the proxy has completed
+        proxyRes.on('end', function () {
+          if (server) server.emit('end', req, res, proxyRes);
+        });
+        // We pipe to the response unless its expected to be handled by the user
+        if (!options.selfHandleResponse) proxyRes.pipe(res);
+      } else {
+        if (server) server.emit('end', req, res, proxyRes);
+      }
+    });
+  }
+
+};

node_modules/http-proxy/lib/http-proxy/passes/web-outgoing.js

@@ -0,0 +1,147 @@
+var url    = require('url'),
+    common = require('../common');
+
+
+var redirectRegex = /^201|30(1|2|7|8)$/;
+
+/*!
+ * Array of passes.
+ *
+ * A `pass` is just a function that is executed on `req, res, options`
+ * so that you can easily add new checks while still keeping the base
+ * flexible.
+ */
+
+module.exports = { // <--
+
+  /**
+   * If is a HTTP 1.0 request, remove chunk headers
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {proxyResponse} Res Response object from the proxy request
+   *
+   * @api private
+   */
+  removeChunked: function removeChunked(req, res, proxyRes) {
+    if (req.httpVersion === '1.0') {
+      delete proxyRes.headers['transfer-encoding'];
+    }
+  },
+
+  /**
+   * If is a HTTP 1.0 request, set the correct connection header
+   * or if connection header not present, then use `keep-alive`
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {proxyResponse} Res Response object from the proxy request
+   *
+   * @api private
+   */
+  setConnection: function setConnection(req, res, proxyRes) {
+    if (req.httpVersion === '1.0') {
+      proxyRes.headers.connection = req.headers.connection || 'close';
+    } else if (req.httpVersion !== '2.0' && !proxyRes.headers.connection) {
+      proxyRes.headers.connection = req.headers.connection || 'keep-alive';
+    }
+  },
+
+  setRedirectHostRewrite: function setRedirectHostRewrite(req, res, proxyRes, options) {
+    if ((options.hostRewrite || options.autoRewrite || options.protocolRewrite)
+        && proxyRes.headers['location']
+        && redirectRegex.test(proxyRes.statusCode)) {
+      var target = url.parse(options.target);
+      var u = url.parse(proxyRes.headers['location']);
+
+      // make sure the redirected host matches the target host before rewriting
+      if (target.host != u.host) {
+        return;
+      }
+
+      if (options.hostRewrite) {
+        u.host = options.hostRewrite;
+      } else if (options.autoRewrite) {
+        u.host = req.headers['host'];
+      }
+      if (options.protocolRewrite) {
+        u.protocol = options.protocolRewrite;
+      }
+
+      proxyRes.headers['location'] = u.format();
+    }
+  },
+  /**
+   * Copy headers from proxyResponse to response
+   * set each header in response object.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {proxyResponse} Res Response object from the proxy request
+   * @param {Object} Options options.cookieDomainRewrite: Config to rewrite cookie domain
+   *
+   * @api private
+   */
+  writeHeaders: function writeHeaders(req, res, proxyRes, options) {
+    var rewriteCookieDomainConfig = options.cookieDomainRewrite,
+        rewriteCookiePathConfig = options.cookiePathRewrite,
+        preserveHeaderKeyCase = options.preserveHeaderKeyCase,
+        rawHeaderKeyMap,
+        setHeader = function(key, header) {
+          if (header == undefined) return;
+          if (rewriteCookieDomainConfig && key.toLowerCase() === 'set-cookie') {
+            header = common.rewriteCookieProperty(header, rewriteCookieDomainConfig, 'domain');
+          }
+          if (rewriteCookiePathConfig && key.toLowerCase() === 'set-cookie') {
+            header = common.rewriteCookieProperty(header, rewriteCookiePathConfig, 'path');
+          }
+          res.setHeader(String(key).trim(), header);
+        };
+
+    if (typeof rewriteCookieDomainConfig === 'string') { //also test for ''
+      rewriteCookieDomainConfig = { '*': rewriteCookieDomainConfig };
+    }
+
+    if (typeof rewriteCookiePathConfig === 'string') { //also test for ''
+      rewriteCookiePathConfig = { '*': rewriteCookiePathConfig };
+    }
+
+    // message.rawHeaders is added in: v0.11.6
+    // https://nodejs.org/api/http.html#http_message_rawheaders
+    if (preserveHeaderKeyCase && proxyRes.rawHeaders != undefined) {
+      rawHeaderKeyMap = {};
+      for (var i = 0; i < proxyRes.rawHeaders.length; i += 2) {
+        var key = proxyRes.rawHeaders[i];
+        rawHeaderKeyMap[key.toLowerCase()] = key;
+      }
+    }
+
+    Object.keys(proxyRes.headers).forEach(function(key) {
+      var header = proxyRes.headers[key];
+      if (preserveHeaderKeyCase && rawHeaderKeyMap) {
+        key = rawHeaderKeyMap[key] || key;
+      }
+      setHeader(key, header);
+    });
+  },
+
+  /**
+   * Set the statusCode from the proxyResponse
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {IncomingMessage} Res Response object
+   * @param {proxyResponse} Res Response object from the proxy request
+   *
+   * @api private
+   */
+  writeStatusCode: function writeStatusCode(req, res, proxyRes) {
+    // From Node.js docs: response.writeHead(statusCode[, statusMessage][, headers])
+    if(proxyRes.statusMessage) {
+      res.statusCode = proxyRes.statusCode;
+      res.statusMessage = proxyRes.statusMessage;
+    } else {
+      res.statusCode = proxyRes.statusCode;
+    }
+  }
+
+};

node_modules/http-proxy/lib/http-proxy/passes/ws-incoming.js

@@ -0,0 +1,162 @@
+var http   = require('http'),
+    https  = require('https'),
+    common = require('../common');
+
+/*!
+ * Array of passes.
+ *
+ * A `pass` is just a function that is executed on `req, socket, options`
+ * so that you can easily add new checks while still keeping the base
+ * flexible.
+ */
+
+/*
+ * Websockets Passes
+ *
+ */
+
+
+module.exports = {
+  /**
+   * WebSocket requests must have the `GET` method and
+   * the `upgrade:websocket` header
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {Socket} Websocket
+   *
+   * @api private
+   */
+
+  checkMethodAndHeader : function checkMethodAndHeader(req, socket) {
+    if (req.method !== 'GET' || !req.headers.upgrade) {
+      socket.destroy();
+      return true;
+    }
+
+    if (req.headers.upgrade.toLowerCase() !== 'websocket') {
+      socket.destroy();
+      return true;
+    }
+  },
+
+  /**
+   * Sets `x-forwarded-*` headers if specified in config.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {Socket} Websocket
+   * @param {Object} Options Config object passed to the proxy
+   *
+   * @api private
+   */
+
+  XHeaders : function XHeaders(req, socket, options) {
+    if(!options.xfwd) return;
+
+    var values = {
+      for  : req.connection.remoteAddress || req.socket.remoteAddress,
+      port : common.getPort(req),
+      proto: common.hasEncryptedConnection(req) ? 'wss' : 'ws'
+    };
+
+    ['for', 'port', 'proto'].forEach(function(header) {
+      req.headers['x-forwarded-' + header] =
+        (req.headers['x-forwarded-' + header] || '') +
+        (req.headers['x-forwarded-' + header] ? ',' : '') +
+        values[header];
+    });
+  },
+
+  /**
+   * Does the actual proxying. Make the request and upgrade it
+   * send the Switching Protocols request and pipe the sockets.
+   *
+   * @param {ClientRequest} Req Request object
+   * @param {Socket} Websocket
+   * @param {Object} Options Config object passed to the proxy
+   *
+   * @api private
+   */
+  stream : function stream(req, socket, options, head, server, clb) {
+
+    var createHttpHeader = function(line, headers) {
+      return Object.keys(headers).reduce(function (head, key) {
+        var value = headers[key];
+
+        if (!Array.isArray(value)) {
+          head.push(key + ': ' + value);
+          return head;
+        }
+
+        for (var i = 0; i < value.length; i++) {
+          head.push(key + ': ' + value[i]);
+        }
+        return head;
+      }, [line])
+      .join('\r\n') + '\r\n\r\n';
+    }
+
+    common.setupSocket(socket);
+
+    if (head && head.length) socket.unshift(head);
+
+
+    var proxyReq = (common.isSSL.test(options.target.protocol) ? https : http).request(
+      common.setupOutgoing(options.ssl || {}, options, req)
+    );
+
+    // Enable developers to modify the proxyReq before headers are sent
+    if (server) { server.emit('proxyReqWs', proxyReq, req, socket, options, head); }
+
+    // Error Handler
+    proxyReq.on('error', onOutgoingError);
+    proxyReq.on('response', function (res) {
+      // if upgrade event isn't going to happen, close the socket
+      if (!res.upgrade) {
+        socket.write(createHttpHeader('HTTP/' + res.httpVersion + ' ' + res.statusCode + ' ' + res.statusMessage, res.headers));
+        res.pipe(socket);
+      }
+    });
+
+    proxyReq.on('upgrade', function(proxyRes, proxySocket, proxyHead) {
+      proxySocket.on('error', onOutgoingError);
+
+      // Allow us to listen when the websocket has completed
+      proxySocket.on('end', function () {
+        server.emit('close', proxyRes, proxySocket, proxyHead);
+      });
+
+      // The pipe below will end proxySocket if socket closes cleanly, but not
+      // if it errors (eg, vanishes from the net and starts returning
+      // EHOSTUNREACH). We need to do that explicitly.
+      socket.on('error', function () {
+        proxySocket.end();
+      });
+
+      common.setupSocket(proxySocket);
+
+      if (proxyHead && proxyHead.length) proxySocket.unshift(proxyHead);
+
+      //
+      // Remark: Handle writing the headers to the socket when switching protocols
+      // Also handles when a header is an array
+      //
+      socket.write(createHttpHeader('HTTP/1.1 101 Switching Protocols', proxyRes.headers));
+
+      proxySocket.pipe(socket).pipe(proxySocket);
+
+      server.emit('open', proxySocket);
+      server.emit('proxySocket', proxySocket);  //DEPRECATED.
+    });
+
+    return proxyReq.end(); // XXX: CHECK IF THIS IS THIS CORRECT
+
+    function onOutgoingError(err) {
+      if (clb) {
+        clb(err, req, socket);
+      } else {
+        server.emit('error', err, req, socket);
+      }
+      socket.end();
+    }
+  }
+};