Function lookup

public/javascripts/socket.io.js:95–128

* Looks up an existing `Manager` for multiplexing. * If the user summons: * * `io('http://localhost/a');` * `io('http://localhost/b');` * * We reuse the existing instance based on same scheme/port/host, * and we initialize sockets for each namespace. * * @api public

(uri, opts)

	 */

	function lookup(uri, opts) {
	  if ((typeof uri === 'undefined' ? 'undefined' : _typeof(uri)) === 'object') {
	    opts = uri;
	    uri = undefined;
	  }

	  opts = opts || {};

	  var parsed = url(uri);
	  var source = parsed.source;
	  var id = parsed.id;
	  var path = parsed.path;
	  var sameNamespace = cache[id] && path in cache[id].nsps;
	  var newConnection = opts.forceNew || opts['force new connection'] || false === opts.multiplex || sameNamespace;

	  var io;

	  if (newConnection) {
	    debug('ignoring socket cache for %s', source);
	    io = Manager(source, opts);
	  } else {
	    if (!cache[id]) {
	      debug('new io instance for %s', source);
	      cache[id] = Manager(source, opts);
	    }
	    io = cache[id];
	  }
	  if (parsed.query && !opts.query) {
	    opts.query = parsed.query;
	  } else if (opts && 'object' === _typeof(opts.query)) {
	    opts.query = encodeQueryString(opts.query);
	  }
	  return io.socket(parsed.path, opts);
	}
	/**
	 *  Helper method to parse query objects to string.
	 * @param {object} query