SnmpMgrRequest
The SnmpMgrRequest
function requests the specified operation be performed with the specified
agent.
SNMPAPI SnmpMgrRequest(
|
LPSNMP_MGR_SESSION session, |
// SNMP
session pointer |
|
BYTE requestType, |
// Get,
GetNext, or Set |
|
RFC1157VarBindList *variableBindings, |
// variable
bindings |
|
AsnInteger *errorStatus, |
// result
error status |
|
AsnInteger *errorIndex |
// result
error index |
|
); |
|
Parameters
session
[in] Points
to an internal structure that specifies the session that will perform the
request.
requestType
[in]
Specifies the SNMP request type. This parameter can be one of the following
values:
|
Value |
Meaning |
|
ASN_RFC1157_GETREQUEST |
Search and
receive a value from a specified variable. |
|
ASN_RFC1157_GETNEXTREQUEST |
Search and
receive a value from a variable without knowing the name of the variable. |
|
ASN_RFC1157_SETREQUEST |
Store a
value within a specific variable. |
variableBindings
[in/out]
Points to the variable bindings list.
errorStatus
[out] Points
to a variable in which the error status result will be returned. This parameter
can be one of the following values:
|
Value |
Meaning |
|
SNMP_ERRORSTATUS_NOERROR |
The agent
reports that no errors occurred during transmission. |
|
SNMP_ERRORSTATUS_TOOBIG |
The agent
could not place the results of the requested operation into a single SNMP
message. |
|
SNMP_ERRORSTATUS_NOSUCHNAME |
The
requested operation identified an unknown variable. |
|
SNMP_ERRORSTATUS_BADVALUE |
The
requested operation tried to change a variable but it specified either a
syntax or value error. |
|
SNMP_ERRORSTATUS_READONLY |
The
requested operation tried to change a variable that was not allowed to change
according to the community profile of the variable. |
|
SNMP_ERRORSTATUS_GENERR |
An error
other than one of those listed here occurred during the requested operation. |
errorIndex
[out] Points
to a variable in which the error index result will be returned.
Return Values
If the
function succeeds, the return value is TRUE.
If the
function fails, the return value is NULL. To get extended error information,
call GetLastError.
GetLastError may return one of the following error codes:
|
Error
Code |
Meaning |
|
SNMP_MGMTAPI_TIMEOUT |
The request
timed-out |
|
SNMP_MGMTAPI_SELECT_FDERRORS |
Unexpected
error file descriptors indicated by the Windows Sockets select function |
Remarks
Retries and
time-outs are supplied to the SnmpMgrOpen function. Each variable in the variable
bindings list must be initialized to type ASN_NULL for Get and Get
Next requests.
For more
information, see RFC 1157.
See Also
SnmpMgrOpen, SnmpMgrClose