1 files changed, 85 insertions, 0 deletions
diff --git a/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-async-queries.py b/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-async-queries.py
new file mode 100644
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+++ b/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-async-queries.py
@@ -0,0 +1,85 @@
+"""
+Multiple concurrent queries
++++++++++++++++++++++++++++
+
+Send a bunch of different SNMP GET requests to different peers all at once,
+wait for responses asynchronously:
+
+* with SNMPv1, community 'public' and 
+  with SNMPv2c, community 'public' and
+  with SNMPv3, user 'usr-md5-des', MD5 auth and DES privacy
+* over IPv4/UDP and 
+  over IPv6/UDP
+* to an Agent at demo.snmplabs.com:161 and
+  to an Agent at [::1]:161
+* for instances of SNMPv2-MIB::sysDescr.0 and
+  SNMPv2-MIB::sysLocation.0 MIB objects
+
+"""#
+from pysnmp.hlapi.asyncore import *
+
+# List of targets in the followin format:
+# ( ( authData, transportTarget, varNames ), ... )
+targets = (
+    # 1-st target (SNMPv1 over IPv4/UDP)
+    ( CommunityData('public', mpModel=0),
+      UdpTransportTarget(('demo.snmplabs.com', 161)),
+      ( ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
+        ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
+    # 2-nd target (SNMPv2c over IPv4/UDP)
+    ( CommunityData('public'),
+      UdpTransportTarget(('demo.snmplabs.com', 161)),
+      ( ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
+        ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
+    # 3-nd target (SNMPv2c over IPv4/UDP) - same community and 
+    # different transport address.
+    ( CommunityData('public'),
+      UdpTransportTarget(('localhost', 161)),
+      ( ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysContact', 0)),
+        ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysName', 0))) ),
+    # 4-nd target (SNMPv3 over IPv4/UDP)
+    ( UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
+      UdpTransportTarget(('demo.snmplabs.com', 161)),
+      ( ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
+        ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
+    # 5-th target (SNMPv3 over IPv6/UDP)
+    ( UsmUserData('usr-md5-none', 'authkey1'),
+      Udp6TransportTarget(('::1', 161)),
+      ( ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysDescr', 0)),
+        ObjectType(ObjectIdentity('SNMPv2-MIB', 'sysLocation', 0) )) ),
+    # N-th target
+    # ...
+)
+
+# Wait for responses or errors
+def cbFun(snmpEngine, sendRequestHandle, errorIndication, 
+          errorStatus, errorIndex, varBinds, cbCtx):
+    authData, transportTarget = cbCtx
+    print('%s via %s' % (authData, transportTarget))
+    if errorIndication:
+        print(errorIndication)
+        return True
+    elif errorStatus:
+        print('%s at %s' % (
+                errorStatus.prettyPrint(),
+                errorIndex and varBinds[int(errorIndex)-1][0] or '?'
+            )
+        )
+        return True
+    else:    
+        for varBind in varBinds:
+            print(' = '.join([ x.prettyPrint() for x in varBind ]))
+
+snmpEngine = SnmpEngine()
+
+cmdGen  = AsyncCommandGenerator()
+
+# Submit GET requests
+for authData, transportTarget, varNames in targets:
+    cmdGen.getCmd(
+        snmpEngine, authData, transportTarget, ContextData(), varNames,
+        # User-space callback function and its context
+        (cbFun, (authData, transportTarget))
+    )
+
+snmpEngine.transportDispatcher.runDispatcher()