Working with Out-Of-Band Data: Setting the URG-Flag. This prevents that later packets have to wait for earlier, lost ones.
send(…,,MSG_OOB)
Setting the socket to TCP_NOWAIT: This sends small amounts of data immediately, without waiting for filling one packet.
m_socket->setSocketOption(QAbstractSocket::LowDelayOption, 1);
PSH-Flag….
http://packetlife.net/blog/2011/mar/2/tcp-flags-psh-and-urg/
Literature:
The GNU C Library Reference Manual, Edition 0.12
http://www.qtcentre.org/threads/45955-SOLVED-setting-QTcpSocket-TCP_NODELAY-option
http://doc.qt.nokia.com/4.7/qabstractsocket.html