src/mg/Ding/Helpers/Tcp/TcpServerHelper.php
private function _freePeer(\Ding\Helpers\Tcp\TcpPeer $peer)
    {
        $peerName = $peer->getName();
        unset($this->_peers[$peerName]);
        unset($this->_peersSockets[$peerName]);
        unset($this->_peersLastDataReceived[$peerName]);
    }
private function _freePeer(\Ding\Helpers\Tcp\TcpPeer $peer)
    {
        $peerName = $peer->getName();
        unset($this->_peers[$peerName]);
        unset($this->_peersSockets[$peerName]);
        unset($this->_peersLastDataReceived[$peerName]);
    }
After disconnecting a peer, this will release all the associated
information.

@return void