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From Christian Posta <christian.po...@gmail.com>
Subject Re: ActiveMQ transport error when I do a telnet check on the port
Date Thu, 27 Jun 2013 00:01:09 GMT
when you open a socket to the broke port, there are a series of protocol
negotiations expected, and this can cause errors if the protocol isn't
followed. you may try stomp transport for your telnet session?
a tcp port check could cause those errors because port is opened/closed or
even just half-opened (SYN port scan) before the broker can respond.


On Wed, Jun 26, 2013 at 3:53 PM, jliao <jliao@riotgames.com> wrote:

> I'm using ActiveMQ 5.5, and I have some monitoring going against the broker
> port to perform a TCP port check, and somehow I'm getting all these errors
> in my logs:
>
>
> WARN  | 06-26-2013 15:00:41.055 | Async Exception Handler |
> org.apache.activemq.broker.TransportConnection.Transport(202) - Transport
> Connection to: /10.20.30.40:51534 failed:
> org.apache.activemq.transport.InactivityIOException: Cannot send, channel
> has already failed: /10.20.30.40:51534
> WARN  | 06-26-2013 15:01:40.715 | ActiveMQ NIO Worker |
> org.apache.activemq.broker.TransportConnection.Transport(202) - Transport
> Connection to: /10.20.30.40:51545 failed: java.io.EOFException
> WARN  | 06-26-2013 15:01:40.715 | Async Exception Handler |
> org.apache.activemq.broker.TransportConnection.Transport(202) - Transport
> Connection to: /10.20.30.40:51545 failed:
> org.apache.activemq.transport.InactivityIOException: Cannot send, channel
> has already failed: /10.20.30.40:51545
> WARN  | 06-26-2013 15:02:40.502 | ActiveMQ NIO Worker |
> org.apache.activemq.broker.TransportConnection.Transport(202) - Transport
> Connection to: /10.20.30.40:51561 failed: java.io.EOFException
>
>
> The 10.20.30.40 is the IP for the ActiveMQ broker, and the TCP port
> checking
> is 61656. This error can be repro by just simply doing a "telnet
> 10.20.30.40
> 61656". So does anyone know what might be causing this error?
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/ActiveMQ-transport-error-when-I-do-a-telnet-check-on-the-port-tp4668611.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>



-- 
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta

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