[SNMP4J] Getting IllegalBlockingModeException when receiving trap via TCP

[Frank Fock]

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(Defaul
>>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
>>
>>
>> 
>>
>>    
>>
>
>
>  
>


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