Florin Coras <fcoras.li...@gmail.com> schrieb am Fr., 18. Mai 2018 um
08:12 Uhr:
> That http server is just example code that executes the contents of a get
> request as a cli commands within a spawned vpp process. So, if you want to
> disconnect _after_ the the reply is sent, call vnet_disconnect_session ()
> at the end of http_cli_process.
>
Came across this when searching for a similar problem.
I tried exactly what Florin suggested in the rx_callback handle. Doing so
result in segmentation in multiple places.
The first in tcp_input:
Thread 1 "vpp_main" received signal SIGSEGV, Segmentation fault.
0x00007ffff70d5b25 in tcp_handle_postponed_dequeues (wrk=0x7fffb5ac5f00) at
/usr/src/vpp/src/vnet/tcp/tcp_input.c:530
530 tc->flags &= ~TCP_CONN_DEQ_PENDING;
(gdb) print tc
$1 = (tcp_connection_t *) 0x0
(gdb) bt
#0 0x00007ffff70d5b25 in tcp_handle_postponed_dequeues
(wrk=0x7fffb5ac5f00) at /usr/src/vpp/src/vnet/tcp/tcp_input.c:530
#1 0x00007ffff70db8bb in tcp46_established_inline (vm=0x7ffff68f2340
<vlib_global_main>, node=0x7fffb6dc0600, frame=0x7fffb5e1afc0, is_ip4=1) at
/usr/src/vpp/src/vnet/tcp/tcp_input.c:2160
#2 0x00007ffff70db951 in tcp4_established (vm=0x7ffff68f2340
<vlib_global_main>, node=0x7fffb6dc0600, from_frame=0x7fffb5e1afc0) at
/usr/src/vpp/src/vnet/tcp/tcp_input.c:2171
#3 0x00007ffff6669ab2 in dispatch_node (vm=0x7ffff68f2340
<vlib_global_main>, node=0x7fffb6dc0600, type=VLIB_NODE_TYPE_INTERNAL,
dispatch_state=VLIB_NODE_STATE_POLLING, frame=0x7fffb5e1afc0,
last_time_stamp=6761417783745271)
at /usr/src/vpp/src/vlib/main.c:1109
#4 0x00007ffff666a092 in dispatch_pending_node (vm=0x7ffff68f2340
<vlib_global_main>, pending_frame_index=10,
last_time_stamp=6761417783745271) at /usr/src/vpp/src/vlib/main.c:1267
#5 0x00007ffff666bd23 in vlib_main_or_worker_loop (vm=0x7ffff68f2340
<vlib_global_main>, is_main=1) at /usr/src/vpp/src/vlib/main.c:1694
#6 0x00007ffff666c4fc in vlib_main_loop (vm=0x7ffff68f2340
<vlib_global_main>) at /usr/src/vpp/src/vlib/main.c:1768
#7 0x00007ffff666d2a9 in vlib_main (vm=0x7ffff68f2340 <vlib_global_main>,
input=0x7fffb53fffb0) at /usr/src/vpp/src/vlib/main.c:1961
#8 0x00007ffff66c7d2d in thread0 (arg=140737329963840) at
/usr/src/vpp/src/vlib/unix/main.c:606
#9 0x00007ffff5ee2e04 in clib_calljmp () from
/usr/src/vpp/build-root/install-vpp_debug-native/vpp/lib/libvppinfra.so.19.01
#10 0x00007fffffffd0f0 in ?? ()
#11 0x00007ffff66c81fa in vlib_unix_main (argc=44, argv=0x5555558939b0) at
/usr/src/vpp/src/vlib/unix/main.c:675
#12 0x000055555555cce8 in main (argc=44, argv=0x5555558939b0) at
/usr/src/vpp/src/vpp/vnet/main.c:272
After adding a check for tc == NULL, it crashes with
0: /usr/src/vpp/src/vnet/session/session.h:394 (session_get_from_handle)
assertion `! pool_is_free (smm->wrk[thread_index].sessions, _e)' fails
So it seems that is currently not possible to use vnet_disconnect_session
() from a rx_callback directly.
Any hints on how to disconnect the tcp session from the rx callback?
Regards
Andreas
> Florin
>
>
> On May 17, 2018, at 10:52 PM, muziding <muziding...@163.com> wrote:
>
> Hi
>
> I want to make the example of http server actively close the client
> connection, instead of waiting for the client to close connection, after
> http server has responded to the client request. What should I do?
>
>
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