'use strict';
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var debug = function() {};
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if (process.env.NODE_ENV !== 'production') {
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debug = require('debug')('sockjs-client:utils:transport');
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}
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module.exports = function(availableTransports) {
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return {
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filterToEnabled: function(transportsWhitelist, info) {
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var transports = {
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main: []
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, facade: []
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};
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if (!transportsWhitelist) {
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transportsWhitelist = [];
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} else if (typeof transportsWhitelist === 'string') {
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transportsWhitelist = [transportsWhitelist];
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}
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availableTransports.forEach(function(trans) {
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if (!trans) {
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return;
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}
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if (trans.transportName === 'websocket' && info.websocket === false) {
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debug('disabled from server', 'websocket');
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return;
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}
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if (transportsWhitelist.length &&
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transportsWhitelist.indexOf(trans.transportName) === -1) {
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debug('not in whitelist', trans.transportName);
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return;
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}
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if (trans.enabled(info)) {
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debug('enabled', trans.transportName);
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transports.main.push(trans);
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if (trans.facadeTransport) {
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transports.facade.push(trans.facadeTransport);
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}
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} else {
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debug('disabled', trans.transportName);
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}
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});
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return transports;
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}
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};
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};
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