@slack/client/lib/clients/transports/ws.js

A library for creating a Slack client

/**
 * Helper to make a new ws WebSocket instance.
 */

var HttpsProxyAgent = require('https-proxy-agent');
var WebSocket = require('ws');
var globalHelpers = require('../../helpers');

var factory = function wsTransportFactory(logger) {
  return function wsTransport(socketUrl, opts) {
    var wsTransportOpts = opts || {};
    var wsOpts = {};
    var proxyURL = wsTransportOpts.proxyURL || process.env.https_proxy;

    if (proxyURL) {
      if (logger) {
        logger('info', 'Using https proxy: ' + proxyURL);
      }
      wsOpts.agent = new HttpsProxyAgent(proxyURL);
    }

    wsOpts.headers = {
      'User-Agent': globalHelpers.getVersionString()
    };

    return new WebSocket(socketUrl, wsOpts);
  };
};

/**
 *
 * @param {String} socketUrl
 * @param {Object=} opts
 * @param {String} opts.proxyURL
 * @returns {*}
 */
var wsTransport = factory();


module.exports = wsTransport;
module.exports.factory = factory;