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-rw-r--r--node_modules/engine.io/lib/transports/index.js36
1 files changed, 36 insertions, 0 deletions
diff --git a/node_modules/engine.io/lib/transports/index.js b/node_modules/engine.io/lib/transports/index.js
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+
+/**
+ * Module dependencies.
+ */
+
+var XHR = require('./polling-xhr');
+var JSONP = require('./polling-jsonp');
+
+/**
+ * Export transports.
+ */
+
+module.exports = exports = {
+ polling: polling,
+ websocket: require('./websocket')
+};
+
+/**
+ * Export upgrades map.
+ */
+
+exports.polling.upgradesTo = ['websocket'];
+
+/**
+ * Polling polymorphic constructor.
+ *
+ * @api private
+ */
+
+function polling (req) {
+ if ('string' === typeof req._query.j) {
+ return new JSONP(req);
+ } else {
+ return new XHR(req);
+ }
+}