Xbox One does not support Winsock’s Quality of Service (QoS) feature.
typedef struct _QualityOfService {
} QOS, *LPQOS;
On Xbox One, Quality of Service (QoS) is negotiated transparently to your title when a secure socket connection is instantiated. Your code should not attempt to establish QoS for iteself.
Header: Declared in winsock2.h.
Library: Use ws2_32.lib.