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https://issues.apache.org/jira/browse/PROTON-847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajkumar updated PROTON-847:
----------------------------
    Description: 
I am using Qpid proton C library v.7.0 for sending AMQPS messages to Azure 
cloud service bus. I am getting the following error.

/home/debian/qpid/qpid-proton-0.7/proton-c/src/transport/transport.c:2110: 
pn_transport_pop: Assertion `transport->output_pending >= size' failed.

Can anyone tell why this error is coming? This error comes very frequently and 
not able to predict and no idea how to stop this


I have created one messenger object and two thread is my program share  this 
messenger object. 

**First thread send message to cloud and second thread receives messages from 
the cloud. 

Is it a right way of doing or I need to create two messenger objects for 
sending and receiving messages? 

Or Do I need to create new messenger object every time while sending and 
receiving messages ? 

Please propose the design to avoid such kind of errors. **

  was:
I am using Qpid proton C library v.7.0 for sending AMQPS messages to Azure 
cloud service bus. I am getting the following error.

/home/debian/qpid/qpid-proton-0.7/proton-c/src/transport/transport.c:2110: 
pn_transport_pop: Assertion `transport->output_pending >= size' failed.

Can anyone tell why this error is coming? This error comes very frequently and 
not able to predict and no idea how to stop this


I have created one messenger object and two thread is my program share  this 
messenger object. 

*First thread send message to cloud and second thread receives messages from 
the cloud. 

Is it a right way of doing or I need to create two messenger objects for 
sending and receiving messages? 

Or Do I need to create new messenger object every time while sending and 
receiving messages ? 

Please propose the design to avoid such kind of errors. *


> Qpid Proton C Assertion trasport->output_pending >= size failed
> ---------------------------------------------------------------
>
>                 Key: PROTON-847
>                 URL: https://issues.apache.org/jira/browse/PROTON-847
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-c
>    Affects Versions: 0.7
>         Environment: Debian linux, Proton C v 0.7
>            Reporter: Rajkumar
>            Priority: Critical
>
> I am using Qpid proton C library v.7.0 for sending AMQPS messages to Azure 
> cloud service bus. I am getting the following error.
> /home/debian/qpid/qpid-proton-0.7/proton-c/src/transport/transport.c:2110: 
> pn_transport_pop: Assertion `transport->output_pending >= size' failed.
> Can anyone tell why this error is coming? This error comes very frequently 
> and not able to predict and no idea how to stop this
> I have created one messenger object and two thread is my program share  this 
> messenger object. 
> **First thread send message to cloud and second thread receives messages from 
> the cloud. 
> Is it a right way of doing or I need to create two messenger objects for 
> sending and receiving messages? 
> Or Do I need to create new messenger object every time while sending and 
> receiving messages ? 
> Please propose the design to avoid such kind of errors. **



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