[erlang-questions] diameter_sctp problem

[Anders Svensson]

Hi Sharmilla.

On Tue, Jan 21, 2014 at 10:21 AM, Sharmila Pillai
<pillai.sharmila@REDACTED> wrote:
> Hi,
>
> I'm encountering an error when using DIAMETER over SCTP.
>
> I turned on dbg tracing, and this is what I see.
>
> (<0.527.0>) call
> diameter_sctp:send(10,Bin,{transport,<0.526.0>,accept,#Port<0.10834>,96747,undefined,{16,10},2})

The stream identifier here (first argument) looks to be equal to the
number of outbound streams, which is 1 more than the maximal stream
identifier. Are you setting the stream identifier explicitly when
sending?

/Anders, Erlang/OTP


> (<0.527.0>) call diameter_sctp:send(#Port<0.10834>,96747,10,Bin)
> (<0.527.0>) call diameter_sctp:x({send,einval})
> (<0.527.0>) exception_from {diameter_sctp,x,1}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) exception_from {diameter_sctp,send,4}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) exception_from {diameter_sctp,send,3}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) exception_from {diameter_sctp,send,2}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) exception_from {diameter_sctp,transition,2}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) exception_from {diameter_sctp,t,2}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) exception_from {diameter_sctp,handle_info,2}
> {exit,{shutdown,{send,einval}}}
> (<0.527.0>) call
> diameter_sctp:terminate({shutdown,{send,einval}},{transport,<0.526.0>,accept,#Port<0.10834>,96747,undefined,{16,10},2})
> (<0.527.0>) call diameter_sctp:close(#Port<0.10834>,96747)
> (<0.527.0>) returned from diameter_sctp:close/2 -> ok
> (<0.527.0>) returned from diameter_sctp:terminate/2 -> ok
> (<0.315.0>) call
> diameter_sctp:handle_info({'DOWN',#Ref<0.0.0.47966>,process,<0.527.0>,{shutdown,{send,einval}}},{listener,#Ref<0.0.0.1361>,#Port<0.4307>,2,786532,
>
> I'm not sure why {error, einval} is being returned when a response is being
> sent on the SCTP connection. If I look at the packet capture, it looks like
> an SCTP SHUTDOWN is being sent back. Any pointers please?
>
> Thanks,
> Sharmila
>
>
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