[SNMP4J] Getting IllegalBlockingModeException when receivingtrap via TCP

[Frank Fock]

Hi Fedja,

Yes, TCP is supported for all SNMP operations by SNMP4J.
Please download v1.6RC1 for best results (it contains a fix
regarding TCP support).

Best regards,
Frank

Fedja Jeleskovic wrote:

> Hi Frank,
>
> Is the sending traps over TCP available for the SNMP4J if not for the 
> Agent++?
>
> Thanks
>
> Fedja
>
> ----- Original Message ----- From: "Frank Fock" <fock at agentpp.com>
> To: "Mccarty, William (Bill)" <mccarty at avaya.com>
> Cc: <snmp4j at agentpp.org>
> Sent: Thursday, October 13, 2005 2:50 AM
> Subject: Re: [SNMP4J] Getting IllegalBlockingModeException when 
> receivingtrap via TCP
>
>
>> Bill,
>>
>> Yes, of course. SNMP4J 1.6 RC1 will be released within the next 48 
>> hours.
>> I will also try to provide this fix for v1.5.
>>
>> Best regards,
>> Frank
>>
>> Mccarty, William (Bill) wrote:
>>
>>> Frank,
>>>
>>> I tried this patch out and it appears to work.
>>>
>>> Will this be added into future releases of your package?
>>> Thanks again.
>>> Bill
>>> -----Original Message-----
>>> From: Frank Fock [mailto:fock at agentpp.com] Sent: Wednesday, October 
>>> 12, 2005 2:49 PM
>>> To: Mccarty, William (Bill)
>>> Cc: snmp4j at agentpp.org
>>> Subject: Re: [SNMP4J] Getting IllegalBlockingModeException when
>>> receiving trap via TCP
>>>
>>> Bill,
>>>
>>> the following patch should fix the problem:
>>>
>>> --- src/org/snmp4j/transport/DefaultTcpTransportMapping.java    19 
>>> Aug 2005 22:13:17 -0000    1.25
>>> +++ src/org/snmp4j/transport/DefaultTcpTransportMapping.java    12 
>>> Oct 2005 17:51:00 -0000
>>> @@ -547,6 +547,7 @@
>>>                 // Accept the date request and send back the date
>>> string
>>>                 Socket s = nextReady.accept().socket();
>>>                 readChannel = s.getChannel();
>>> +                readChannel.configureBlocking(false);
>>>                 readChannel.register(selector, SelectionKey.OP_READ);
>>>
>>>                 incomingAddress = new TcpAddress(s.getInetAddress(),
>>> s.getPort()); @@ -565,6 +566,7 @@
>>>                   SocketEntry entry = (SocketEntry) sk.attachment();
>>>                   SocketChannel sc = (SocketChannel) sk.channel();
>>>                   if (sc.finishConnect()) {
>>> +                    sc.configureBlocking(false);
>>>                     logger.debug("Connected to " +
>>> entry.getPeerAddress());
>>>                     // make sure conncetion is closed if not used for
>>> timeout
>>>                     // micro seconds
>>>
>>> Best regards,
>>> Frank
>>>
>>> Mccarty, William (Bill) wrote:
>>>
>>>
>>>> Frank,
>>>>
>>>> Thanks for your quick reply.
>>>> This is running on Windows XP Professional, with SP1.
>>>> The Java is Java(TM) 2 Runtime Environment, Standard Edition (build 
>>>> 1.4.2_05-b04).
>>>>
>>>> Bill
>>>>
>>>> -----Original Message-----
>>>> From: Frank Fock [mailto:fock at agentpp.com]
>>>> Sent: Wednesday, October 12, 2005 9:26 AM
>>>> To: Mccarty, William (Bill)
>>>> Cc: snmp4j at agentpp.org
>>>> Subject: Re: [SNMP4J] Getting IllegalBlockingModeException when 
>>>> receiving trap via TCP
>>>>
>>>> Hi Bill,
>>>>
>>>> Could you please tell us which operating system and Java runtime 
>>>> version you are using? It seems that this error is platform specific.
>>>>
>>>> Thanks,
>>>> Frank
>>>>
>>>> Mccarty, William (Bill) wrote:
>>>>
>>>>
>>>>
>>>>> I am using snmp4j-1.5.1 and when I attempt to receive a trap with 
>>>>> the API configured for TCP an IllegalBlockingModeException occurs. 
>>>>> Below is
>>>>>
>>>>>
>>>>
>>>>
>>>>> the stack trace that is displayed.
>>>>>
>>>>> Listening on 0.0.0.0/1024
>>>>> java.nio.channels.IllegalBlockingModeException
>>>>> at java.nio.channels.spi.AbstractSelectableChannel.register(Unknown
>>>>> Source)
>>>>> at java.nio.channels.SelectableChannel.register(Unknown Source)  
>>>>> at 
>>>>> org.snmp4j.transport.DefaultTcpTransportMapping$ServerThread.run(Defau 
>>>>>
>>>>> l
>>>>> t
>>>>> TcpTransportMapping.java:475)
>>>>>
>>>>> I first saw this exception in my application. So I tried running 
>>>>> the console application included in the SNMP4J package and saw the 
>>>>> same exception.
>>>>> Am I missing something? Or is this a bug in the API?
>>>>>
>>>>> Bill
>>>>> _______________________________________________
>>>>> SNMP4J mailing list
>>>>> SNMP4J at agentpp.org
>>>>> http://lists.agentpp.org/mailman/listinfo/snmp4j
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>> -- 
>> AGENT++
>> http://www.agentpp.com
>> http://www.mibexplorer.com
>> http://www.mibdesigner.com
>>
>>
>> _______________________________________________
>> SNMP4J mailing list
>> SNMP4J at agentpp.org
>> http://lists.agentpp.org/mailman/listinfo/snmp4j 
>
>
>
>


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