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srv_pfield (Extended Stored Procedure API)

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Important

This feature will be removed in a future version of Microsoft SQL Server. Do not use this feature in new development work, and modify applications that currently use this feature as soon as possible. Use CLR integration instead.

Returns information about a database connection.

Syntax


DBCHAR * srv_pfield (
SRV_PROC *
srvproc
,
int 
field
,
int *
len
);

Arguments

  • srvproc
    Pointer identifying a database connection.

  • field
    Specifies data on the connection to return.

    Value Returns

    SRV_APPLNAME

    The application name provided by the client when it established the connection.

    SRV_BCPFLAG

    A flag that is TRUE if the client is preparing for a bulk copy operation; otherwise, FALSE.

    SRV_CLIB

    The name of the library that enables the client to talk to a server.

    SRV_CPID

    The client process ID on the client source computer.

    SRV_HOST

    The name of the client's machine provided by the client when it established the connection.

    SRV_LIBVERS

    The version of the client library.

    SRV_LSECURE

    A flag. TRUE if the connection used integrated security to login.

    SRV_NETWORK_MODULE

    The name of the Net-Library DLL used by the connection.

    SRV_NETWORK_VERSION

    The version of the Net-Library DLL used by the connection.

    SRV_NETWORK_CONNECTION

    The connection string passed to the Net-Library DLL used for the current srvproc connection.

    SRV_PIPEHANDLE

    A string containing the pipe handle of a connected client, or NULL if the client is connected on a network that does not use named pipes. To use this handle as a valid pipe handle with Microsoft Windows, convert this string to an integer.

    SRV_RMTSERVER

    The server from which the client process is logged in. If the login is from a client, this value is an empty string.

    SRV_ROWSENT

    The number of rows already sent by srvproc for the current set of results.

    SRV_SPID

    The server thread ID of the srvproc. For extended stored procedures, this value is the same as the kpid column of sys.sysprocesses, and it can change over time.

    SRV_SPROC_CODEPAGE

    Codepage that the server uses to interpret multbyte data.

    SRV_STATUS

    The current status of srvproc: running or closed

    SRV_TYPE

    The connection type of srvproc. If server is returned, srvproc is from an instance of SQL Server. If client is returned, srvproc is from a DB-Library or ODBC client.

    SRV_USER

    The user name of the connection.
  • len
    Is a pointer to an int variable that contains the length of the returned field value. If len is NULL, the length of the string is not returned.

Returns

A pointer to a null-terminated string containing the current value for the specified field in the SRV_PROC structure. If the field is empty, a valid pointer to an empty string is returned and len contains 0. If the field is unknown, NULL is returned and len contains the value -1.

ms164690.security(en-US,SQL.90).gifSecurity Note:
You should thoroughly review the source code of extended stored procedures, and you should test the compiled DLLs before you install them on a production server. For information about security review and testing, see this Microsoft Web site.