node.js authetication

[giuseppe.corti]

Hi Tim,

Unfortunately the versions prior to 6.2.3 of lightstreamer-client package can not be obtained through "npm istall".
So you should use the lightstreamer_node.js file and rely on an AMD loader (i.e.: require.js).
Please refer to section "2.3.5.2 Using the AMD loader" of "JavaScript Client Guide" documentation, but in your case something like this should work:

var requirejs = require('requirejs');<br /> <br /> requirejs.config({<br /> deps: ["lightstreamer_node.js"],<br /> nodeRequire: require<br /> });<br /> <br /> requirejs(["LightstreamerClient","Subscription"],function(LightstreamerClient,Subscription) {<br /> //YOUR CODE HERE <br /> });

[TimL]

Sorry to bother you again Giuseppe. Perhaps this is one for Stack Overflow: Why would define still be undefined after requiring lightstreamer_node.js in the way you described above? From what I have read here: http://requirejs.org/docs/node.html requirejs should define define for me.

I have installed requirejs

npm install requirejs

and my code looks like this

    var ls = {};

    IGInterface.prototype.connectToLightstreamer = function(loginCallback) {
      var requirejs;
      requirejs = require('requirejs');

      requirejs.config({
        deps: ["../thirdparty/lightstreamer_node.js"],
        nodeRequire: require
      });

      return requirejs(["LightstreamerClient", "Subscription"], (function(_this) {
        return function(LightstreamerClient, Subscription) {
          ls.LightstreamerClient = LightstreamerClient;
          ls.Subscription = Subscription;
          _this.lsClient = new ls.LightstreamerClient(_this.endPoint);
          _this.lsClient.connectionDetails.setUser(_this.clientId);
          _this.lsClient.connectionDetails.setPassword(_this.getPassword());
          _this.lsClient.addListener({
            onStatusChange: function(status) {
              _this.showMessage("LS connection status: " + status);
              if (status === "CONNECTED:WS-STREAMING") {
                return loginCallback();
              }
            }
          });
          return _this.lsClient.connect();
        };
      })(this));
    };

the error is

/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:2585
                    throw err;
                          ^
Error: Tried loading "../thirdparty/lightstreamer_node.js" at ../thirdparty/lightstreamer_node.js then tried node's require("../thirdparty/lightstreamer_node.js") and it failed with error: ReferenceError: define is not defined
    at /home/ubuntu/workspace/node_modules/requirejs/bin/r.js:2578:27
    at Object.context.execCb (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1929:33)
    at Object.Module.check (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1129:51)
    at Object.Module.enable (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1416:22)
    at Object.Module.init (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1034:26)
    at callGetModule (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1443:63)
    at Object.context.completeLoad (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1822:21)
    at Function.req.load (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:2591:17)
    at Object.context.load (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1918:21)
    at Object.Module.load (/home/ubuntu/workspace/node_modules/requirejs/bin/r.js:1080:29)

I have tried reinstalling requirejs several times, deleting it in node_modules first and I've also re downloaded lightstreamer_node.js to make sure it's not been corrupted by me. Any ideas?

Cheers,
Tim

[TimL]

I eventually fixed this. lightstreamer_node.js had to be in the same directory as the file I was writing: https://github.com/jrburke/requirejs/issues/122

[giuseppe.corti]

Hi Tim,

Good news, thank you for the feedback.

[Mone]

Hi,

we just published version 6.1.4 on npm, so you can install the old version from there (and thus stop using the requirejs package)
You can install the old version by using either
npm install lightstreamer-client@6.1.4
or
npm install lightstreamer-client@legacy-server-5.1.2

you can also obviously configure your package.json accordingly