1 files changed, 103 insertions, 0 deletions
diff --git a/examples/v1arch/asyncore/manager/cmdgen/getnext-v1.py b/examples/v1arch/asyncore/manager/cmdgen/getnext-v1.py
new file mode 100644
index 0000000..b3e16f1
--- /dev/null
+++ b/examples/v1arch/asyncore/manager/cmdgen/getnext-v1.py
@@ -0,0 +1,103 @@
+"""
+Walk Agent MIB (SNMPv1)
++++++++++++++++++++++++
+
+Perform SNMP GETNEXT operation with the following options:
+
+* with SNMPv1, community 'public'
+* over IPv4/UDP
+* to an Agent at 195.218.195.228:161
+* for OID in tuple form
+
+This script performs similar to the following Net-SNMP command:
+
+| $ snmpwalk -v1 -c public -ObentU 195.218.195.228 1.3.6
+
+"""#
+from pysnmp.carrier.asyncore.dispatch import AsyncoreDispatcher
+from pysnmp.carrier.asyncore.dgram import udp
+from pyasn1.codec.ber import encoder, decoder
+from pysnmp.proto import api
+from time import time
+
+# Protocol version to use
+pMod = api.protoModules[api.protoVersion1]
+#pMod = api.protoModules[api.protoVersion2c]
+
+# SNMP table header
+headVars = [ pMod.ObjectIdentifier((1,3,6)) ]
+
+# Build PDU
+reqPDU =  pMod.GetNextRequestPDU()
+pMod.apiPDU.setDefaults(reqPDU)
+pMod.apiPDU.setVarBinds(reqPDU, [ (x, pMod.null) for x in headVars ])
+
+# Build message
+reqMsg = pMod.Message()
+pMod.apiMessage.setDefaults(reqMsg)
+pMod.apiMessage.setCommunity(reqMsg, 'public')
+pMod.apiMessage.setPDU(reqMsg, reqPDU)
+
+startedAt = time()
+
+def cbTimerFun(timeNow):
+    if timeNow - startedAt > 3:
+        raise Exception("Request timed out")
+
+def cbRecvFun(transportDispatcher, transportDomain, transportAddress,
+              wholeMsg, reqPDU=reqPDU, headVars=headVars):
+    while wholeMsg:
+        rspMsg, wholeMsg = decoder.decode(wholeMsg, asn1Spec=pMod.Message())
+        rspPDU = pMod.apiMessage.getPDU(rspMsg)
+        # Match response to request
+        if pMod.apiPDU.getRequestID(reqPDU)==pMod.apiPDU.getRequestID(rspPDU):
+            # Check for SNMP errors reported
+            errorStatus = pMod.apiPDU.getErrorStatus(rspPDU)
+            if errorStatus and errorStatus != 2:
+                raise Exception(errorStatus)
+            # Format var-binds table
+            varBindTable = pMod.apiPDU.getVarBindTable(reqPDU, rspPDU)
+            # Report SNMP table
+            for tableRow in varBindTable:
+                for name, val in tableRow:
+                    print('from: %s, %s = %s' % (
+                        transportAddress, name.prettyPrint(), val.prettyPrint()
+                        )
+                    )
+            # Stop on EOM
+            for oid, val in varBindTable[-1]:
+                if not isinstance(val, pMod.Null):
+                    break
+            else:
+                transportDispatcher.jobFinished(1)
+                
+            # Generate request for next row
+            pMod.apiPDU.setVarBinds(
+                reqPDU, [ (x, pMod.null) for x,y in varBindTable[-1] ]
+                )
+            pMod.apiPDU.setRequestID(reqPDU, pMod.getNextRequestID())
+            transportDispatcher.sendMessage(
+                encoder.encode(reqMsg), transportDomain, transportAddress
+                )
+            global startedAt
+            if time() - startedAt > 3:
+                raise Exception('Request timed out')
+            startedAt = time()
+    return wholeMsg
+
+transportDispatcher = AsyncoreDispatcher()
+
+transportDispatcher.registerRecvCbFun(cbRecvFun)
+transportDispatcher.registerTimerCbFun(cbTimerFun)
+
+transportDispatcher.registerTransport(
+    udp.domainName, udp.UdpSocketTransport().openClientMode()
+)
+transportDispatcher.sendMessage(
+    encoder.encode(reqMsg), udp.domainName, ('demo.snmplabs.com', 161)
+)
+transportDispatcher.jobStarted(1)
+
+transportDispatcher.runDispatcher()
+
+transportDispatcher.closeDispatcher()