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WSASetService
The Windows Sockets WSASetService function registers or deregisters a service instance within one or more name
spaces. This function can be used to affect a specific name space provider, all
providers associated with a specific name space, or all providers across all
name spaces.
INT WSASetService(
LPWSAQUERYSET lpqsRegInfo,
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| EWSASETSERVICEOP essOperation,
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| DWORD dwControlFlags
|
| );
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|
Parameters
lpqsRegInfo
[in] Specifies service information for registration, identifies service for
deregistration.
essOperation
[in] An enumeration whose values include:
RNRSERVICE_REGISTER
Register the service. For SAP, this means sending out a periodic broadcast.
This is a NOP for the DNS name space. For persistent data stores this means
updating the address information.
RNRSERVICE_DEREGISTER
Deregister the service. For SAP, this means stop sending out the periodic
broadcast. This is a NOP for the DNS name space. For persistent data stores this
means deleting address information.
RNRSERVICE_DELETE
Delete the service from dynamic name and persistent spaces. For services
represented by multiple CSADDR_INFO structures (using the SERVICE_MULTIPLE flag),
only the supplied address will be deleted, and this much match exactly the
corresponding CSADD_INFO structure that was supplied when the service was registered.
dwControlFlags
[in] The meaning of dwControlFlags is dependent on the value of essOperation as follows:
essOperation
| dwControlFlags
| Meaning
| REGISTER
| SERVICE_MULTIPLE
| The service being registered may be represented by multiple CSADDR_INFO
structures
|
Service Properties
The following table describes how service property data is represented in a
WSAQUERYSET structure. Fields labeled as (Optional) may be supplied with a NULL pointer.
WSAQUERYSET Field Name
| Service Property Description
| Field Name
| Service Property Description
| dwSize
| Must be set to sizeof(WSAQUERYSET). This is a versioning mechanism.
| dwOutputFlags
| Not applicable and ignored.
| lpszServiceInstanceName
| Referenced string contains the service instance name.
| lpServiceClassId
| The GUID corresponding to this service class.
| lpVersion
| (Optional) Supplies service instance version number.
| lpszComment
| (Optional) An optional comment string.
| dwNameSpace
| See table below.
| lpNSProviderId
| See table below.
| lpszContext
| (Optional) Specifies the starting point of the query in a hierarchical name space.
| dwNumberOfProtocols
| Ignored.
| lpafpProtocols
| Ignored.
| lpszQueryString
| Ignored.
| dwNumberOfCsAddrs
| The number of elements in the array of CSADDRO_INFO structures referenced by lpcsaBuffer.
| lpcsaBuffer
| A pointer to an array of CSADDRO_INFO structures which contain the
address9(es) that the service is listening on.
| lpBlob
| (Optional) This is a pointer to a provider-specific entity.
|
As illustrated below, the combination of the dwNameSpace and lpNSProviderId parameters determine which name space providers are affected by this function.
dwNameSpace
| lpNSProviderId
| Scope of Impact
| Ignored
| Non-NULL
| The specified name space provider
| a valid name space ID
| NULL
| All name space providers that support the indicated name space
| NS_ALL
| NULL
| All name space providers
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Return Values
The return value is zero if the operation was successful. Otherwise, the value
SOCKET_ERROR is returned, and a specific error number may be retrieved by
calling WSAGetLastError.
Error Codes
WSAEACCESS
| The calling routine does not have sufficient privileges to install the Service.
| WSANOTINITIALIZED
| The Windows Sockets 2 DLL has not been initialized. The application must first
call WSAStartup before calling any Windows Sockets functions.
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