Hello Team,

I am running into a weird scenario where I have a python client connected as
a receiver, killing this client leads to a framing error as below

2020-11-03 11:25:34.249356 -0500 PROTOCOL (trace) [5]:FRAME: 0 -> @close(24)
[error=@error(29) [condition=:"amqp:connection:framing-error",
description="connection aborted"]] (distro/src/server.c:112)
2020-11-03 11:25:34.252048 -0500 PROTOCOL (trace) [5]:RAW: RAW:
"\x00\x00\x00S\x02\x00\x00\x00\x00S\x18\xd0\x00\x00\x00C\x00\x00\x00\x01\x00S\x1d\xd0\x00\x00\x007\x00\x00\x00\x02\xa3\x1damqp:connection:framing-error\xa1\x12connection
aborted" (distro/src/server.c:112)

Further the control flow fails at the assertion `qd_conn->n_senders >= 0`
but continues with the execution though. 

Below is the backtrace on gdb:
#1  0x000000080126b6bf in __assert (func=<optimized out>, file=0x8004eb973
"distro/src/container.c", line=714, failedexpr=0x8004ea63c
"qd_conn->n_senders >= 0") at ../../../../../../src/lib/libc/gen/assert.c:55
#2  0x000000080052f6ea in qd_container_handle_event (container=0x801b19020,
event=0x80559fb10, conn=0x8044dd510, qd_conn=0x8044ee090) at
distro/src/container.c:714
#3  0x000000080059cc28 in handle (qd_server=0x801a66240, e=0x80559fb10,
pn_conn=0x8044dd510, ctx=0x8044ee090) at distro/src/server.c:1041
#4  0x000000080059afbd in thread_run (arg=0x801a66240) at
distro/src/server.c:1066
#5  0x00000008005a210a in _thread_init (arg=0x801b790a0) at
distro/src/posix/threading.c:172
#6  0x0000000800b6a8c5 in thread_start (curthread=0x801a34e00) at
../../../../../../src/lib/libthr/thread/thr_create.c:299


I am not really sure whether this is an indication of an existing problem.
Can someone please shed some light on this?

I am using qpid-c++ broker and python client as the receiver.

Thanks in advance.

-Mahee



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