code: function _getHostByPeerUrl( sUrl )
  {
  	let arrMatches;
  
  	//
  	//	this regex will match wss://xxx and ws://xxx
  	//
  	arrMatches = sUrl.match( /^wss?:\/\/(.*)$/i );
  	if ( Array.isArray( arrMatches ) && arrMatches.length >= 1 )
  	{
  		sUrl = arrMatches[ 1 ];
  	}
  
  	//	...
  	arrMatches	= sUrl.match( /^(.*?)[:\/]/ );
  	return ( Array.isArray( arrMatches ) && arrMatches.length >= 1 ) ? arrMatches[ 1 ] : sUrl;
  }
docs: get host by peer url
  
  @private
  @param	{string}	sUrl
  @return {string}