08-27-周三_17-09-29

node_modules/sockjs/lib/trans-xhr.js

@@ -0,0 +1,116 @@
+(function() {
+  var XhrPollingReceiver, XhrStreamingReceiver, transport, utils,
+    __hasProp = Object.prototype.hasOwnProperty,
+    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor; child.__super__ = parent.prototype; return child; };
+
+  transport = require('./transport');
+
+  utils = require('./utils');
+
+  XhrStreamingReceiver = (function(_super) {
+
+    __extends(XhrStreamingReceiver, _super);
+
+    function XhrStreamingReceiver() {
+      XhrStreamingReceiver.__super__.constructor.apply(this, arguments);
+    }
+
+    XhrStreamingReceiver.prototype.protocol = "xhr-streaming";
+
+    XhrStreamingReceiver.prototype.doSendFrame = function(payload) {
+      return XhrStreamingReceiver.__super__.doSendFrame.call(this, payload + '\n');
+    };
+
+    return XhrStreamingReceiver;
+
+  })(transport.ResponseReceiver);
+
+  XhrPollingReceiver = (function(_super) {
+
+    __extends(XhrPollingReceiver, _super);
+
+    function XhrPollingReceiver() {
+      XhrPollingReceiver.__super__.constructor.apply(this, arguments);
+    }
+
+    XhrPollingReceiver.prototype.protocol = "xhr-polling";
+
+    XhrPollingReceiver.prototype.max_response_size = 1;
+
+    return XhrPollingReceiver;
+
+  })(XhrStreamingReceiver);
+
+  exports.app = {
+    xhr_options: function(req, res) {
+      res.statusCode = 204;
+      res.setHeader('Access-Control-Allow-Methods', 'OPTIONS, POST');
+      res.setHeader('Access-Control-Max-Age', res.cache_for);
+      return '';
+    },
+    xhr_send: function(req, res, data) {
+      var d, jsonp, message, _i, _len;
+      if (!data) {
+        throw {
+          status: 500,
+          message: 'Payload expected.'
+        };
+      }
+      try {
+        d = JSON.parse(data);
+      } catch (x) {
+        throw {
+          status: 500,
+          message: 'Broken JSON encoding.'
+        };
+      }
+      if (!d || d.__proto__.constructor !== Array) {
+        throw {
+          status: 500,
+          message: 'Payload expected.'
+        };
+      }
+      jsonp = transport.Session.bySessionId(req.session);
+      if (!jsonp) {
+        throw {
+          status: 404
+        };
+      }
+      for (_i = 0, _len = d.length; _i < _len; _i++) {
+        message = d[_i];
+        jsonp.didMessage(message);
+      }
+      res.setHeader('Content-Type', 'text/plain; charset=UTF-8');
+      res.writeHead(204);
+      res.end();
+      return true;
+    },
+    xhr_cors: function(req, res, content) {
+      var headers, origin;
+      if (!req.headers['origin'] || req.headers['origin'] === 'null') {
+        origin = '*';
+      } else {
+        origin = req.headers['origin'];
+      }
+      res.setHeader('Access-Control-Allow-Origin', origin);
+      headers = req.headers['access-control-request-headers'];
+      if (headers) res.setHeader('Access-Control-Allow-Headers', headers);
+      res.setHeader('Access-Control-Allow-Credentials', 'true');
+      return content;
+    },
+    xhr_poll: function(req, res, _, next_filter) {
+      res.setHeader('Content-Type', 'application/javascript; charset=UTF-8');
+      res.writeHead(200);
+      transport.register(req, this, new XhrPollingReceiver(req, res, this.options));
+      return true;
+    },
+    xhr_streaming: function(req, res, _, next_filter) {
+      res.setHeader('Content-Type', 'application/javascript; charset=UTF-8');
+      res.writeHead(200);
+      res.write(Array(2049).join('h') + '\n');
+      transport.register(req, this, new XhrStreamingReceiver(req, res, this.options));
+      return true;
+    }
+  };
+
+}).call(this);