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Diffstat (limited to 'examples/hlapi/asyncore/sync/manager/cmdgen/custom-timeout-and-retries.py')
-rw-r--r-- | examples/hlapi/asyncore/sync/manager/cmdgen/custom-timeout-and-retries.py | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-timeout-and-retries.py b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-timeout-and-retries.py new file mode 100644 index 0000000..cfa274f --- /dev/null +++ b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-timeout-and-retries.py @@ -0,0 +1,53 @@ +""" +Custom request timeout +++++++++++++++++++++++ + +Send SNMP GET request using the following options: + +* with SNMPv2c, community 'public' +* over IPv4/UDP +* to an Agent at demo.snmplabs.com:161 +* for an OID in string form +* use custom timeout and request retries values + +Transport timing settings (maximum number of request retries and +individual request timeout in seconds) can be set on a per-target basis +as explained by the code that follows. + +Keep in mind that while timeout value can be specified in fractions of a +second, default pysnmp timer resolution is quite low (about 0.5 sec) +so there's no much point in using timeouts which is not a multiple of 0.5 +Internal timer can be programmatically adjusted to finer resolution if needed. + +If retries value is set to 0, pysnmp will issue a single request. Even +if no response arrives, there will be no retry. Likewise, retries=1 +means one initial request plus one retry. + +Functionally similar to: + +| $ snmpget -v1 -c public -t 2 -r 0 demo.snmplabs.com 1.3.6.1.2.1.1.1.0 + +"""# +from pysnmp.hlapi import * + +errorIndication, errorStatus, errorIndex, varBinds = next( + getCmd(SnmpEngine(), + CommunityData('public'), + UdpTransportTarget( + ('demo.snmplabs.com', 161), timeout=2.0, retries=0 + ), + ContextData(), + ObjectType(ObjectIdentity('1.3.6.1.2.1.1.1.0'))) +) + +if errorIndication: + print(errorIndication) +elif errorStatus: + print('%s at %s' % ( + errorStatus.prettyPrint(), + errorIndex and varBinds[int(errorIndex)-1][0] or '?' + ) + ) +else: + for varBind in varBinds: + print(' = '.join([ x.prettyPrint() for x in varBind ])) |