code: function addPeer( sPeer )
  {
  	if ( assocKnownPeers[ sPeer ] )
  	{
  		return;
  	}
  
  	//
  	//	save to memory
  	//
  	assocKnownPeers[ sPeer ] = true;
  
  	//
  	//	save to local storage
  	//
  	let sHost = getHostByPeer( sPeer );
  	addPeerHost
  	(
  		sHost,
  		() =>
  		{
  			console.log( "will insert peer " + sPeer );
  			db.query( "INSERT " + db.getIgnore() + " INTO peers (peer_host, peer) VALUES (?,?)", [ sHost, sPeer ] );
  		}
  	);
  }
docs: save peer to database
  @param	{string}	sPeer	- 'wss://127.0.0.1:90000'