You can yourself “sniff” into incoming packets using a TransportListener and then change (fix) the PDU type on-the-fly in the message byte stream. Afterwards, SNMPJ4 will accept the PDU.
> On 5. Apr 2017, at 22:23, Yuri Krysko <yuri.kry...@mcdean.com> wrote: > > Thank you Frank! I thought of it as well. It looks like one of the SNMP > clients that I am listening for traps from is badly implemented. Is there > any way to ignore this message and/or force snmp4j to process the trap as > SNMPv1 if the client sends such rogue messages? > > I used wireshark to sniff communications between my IDE and remote SNMP > client, and I can confirm this nonsense: the trap comes as v2c, but it is > actually V1TRAP type. > > On 4/5/17, 4:03 PM, "Frank Fock" <f...@agentpp.com <mailto:f...@agentpp.com>> > wrote: > >> Hi Yuri, >> >> The PDU is a v2c PDU which does not allow SNMPv1 TRAP! >> >> Best regards, >> Frank >> >>> On 5. Apr 2017, at 17:37, Yuri Krysko <yuri.kry...@mcdean.com> wrote: >>> >>> Hello All, >>> >>> I am getting the following IOException when trying to decode received >>> SNMP trap >>> >>> >>> java.io.IOException: Unsupported PDU type: -92 >>> >>> at org.snmp4j.PDU.decodeBER(PDU.java:566) >>> >>> at org.snmp4j.mp.MPv2c.prepareDataElements(MPv2c.java:201) >>> >>> at >>> org.snmp4j.MessageDispatcherImpl.dispatchMessage(MessageDispatcherImpl.ja >>> va:278) >>> >>> at >>> org.snmp4j.MessageDispatcherImpl.processMessage(MessageDispatcherImpl.jav >>> a:387) >>> >>> at >>> org.snmp4j.MessageDispatcherImpl.processMessage(MessageDispatcherImpl.jav >>> a:347) >>> >>> at >>> org.snmp4j.util.MultiThreadedMessageDispatcher$MessageTask.run(MultiThrea >>> dedMessageDispatcher.java:182) >>> >>> at org.snmp4j.util.ThreadPool$TaskManager.run(ThreadPool.java:260) >>> >>> >>> To my knowledge, PDU type -92 is supported and denotes V1TRAP. Could >>> anyone advise? >>> >>> Thanks ! >>> >>> ________________________________ >>> >>> LEGAL DISCLAIMER: M.C. Dean, Inc. and its subsidiaries considers this >>> e-mail and any files transmitted with it to be protected, proprietary or >>> privileged information intended solely for the use of the named >>> recipient(s). Any disclosure of this material or the information >>> contained herein, in whole or in part, to anyone outside of the intended >>> recipient or affiliates is strictly prohibited. M. C. Dean, Inc. accepts >>> no liability for the content of this e-mail or for the consequences of >>> any actions taken on the basis of the information contained in it, >>> unless that information is subsequently confirmed in writing. Employees >>> of M.C. Dean, Inc. are instructed not to infringe on any rights of the >>> recipient; any such communication violates company policy. If you are >>> not the intended recipient, any disclosure, copying, distribution, or >>> action taken or omitted in reliance on this information is strictly >>> prohibited by M.C. Dean, Inc.; please notify the sender immediately by >>> return e-mail, delete this communication and destroy all copies. >>> _______________________________________________ >>> SNMP4J mailing list >>> SNMP4J@agentpp.org >>> https://oosnmp.net/mailman/listinfo/snmp4j >> > > > ________________________________ > > LEGAL DISCLAIMER: M.C. Dean, Inc. and its subsidiaries considers this e-mail > and any files transmitted with it to be protected, proprietary or privileged > information intended solely for the use of the named recipient(s). Any > disclosure of this material or the information contained herein, in whole or > in part, to anyone outside of the intended recipient or affiliates is > strictly prohibited. M. C. Dean, Inc. accepts no liability for the content of > this e-mail or for the consequences of any actions taken on the basis of the > information contained in it, unless that information is subsequently > confirmed in writing. Employees of M.C. Dean, Inc. are instructed not to > infringe on any rights of the recipient; any such communication violates > company policy. If you are not the intended recipient, any disclosure, > copying, distribution, or action taken or omitted in reliance on this > information is strictly prohibited by M.C. Dean, Inc.; please notify the > sender immediately by return e-mail, delete this communication and destroy > all copies. _______________________________________________ SNMP4J mailing list SNMP4J@agentpp.org https://oosnmp.net/mailman/listinfo/snmp4j
