DNS_SERVICE_BROWSE_REQUEST structure (windns.h)

Contains the query parameters used in a call to DnsServiceBrowse.

Syntax

typedef struct _DNS_SERVICE_BROWSE_REQUEST {
  ULONG  Version;
  ULONG  InterfaceIndex;
  PCWSTR QueryName;
  union {
    PDNS_SERVICE_BROWSE_CALLBACK pBrowseCallback;
    DNS_QUERY_COMPLETION_ROUTINE *pBrowseCallbackV2;
  };
  PVOID  pQueryContext;
} DNS_SERVICE_BROWSE_REQUEST, *PDNS_SERVICE_BROWSE_REQUEST;

Members

Version

The structure version must be either DNS_QUERY_REQUEST_VERSION1 or DNS_QUERY_REQUEST_VERSION2. The value determines which of pBrowseCallback or pBrowseCallbackV2 is active.

InterfaceIndex

A value that contains the interface index over which the query is sent. If InterfaceIndex is 0, then all interfaces will be considered.

QueryName

A pointer to a string that represents the service type whose matching services you wish to browse for. It takes the generalized form "_<ServiceType>._<TransportProtocol>.local". For example, "_http._tcp.local", which defines a query to browse for http services on the local link.

pBrowseCallback

A pointer to a function (of type DNS_SERVICE_BROWSE_CALLBACK) that represents the callback to be invoked asynchronously. This field is used if Version is DNS_QUERY_REQUEST_VERSION1.

pBrowseCallbackV2

A pointer to a function (of type DNS_QUERY_COMPLETION_ROUTINE) that represents the callback to be invoked asynchronously. This field is used if Version is DNS_QUERY_REQUEST_VERSION2.

pQueryContext

A pointer to a user context.

Requirements