Winsock error 11016
WSA_QOS_ESERVICETYPE - QOS service type error.
Basic (Microsoft) information for 11016 a.k.a. WSA_QOS_ESERVICETYPE
An invalid or unrecognized service type was found in the QOS flowspec.
Detailed (Berkeley) information for winsock 11016, described as "QOS service type error."
Full list of Winsock Error codes
Peer Monitor - network monitoring tool
Hungarian language course