Hi, On Thu, Jan 19, 2017 at 07:25:28PM -0500, Selva Nair wrote: > I would be interested in this too, but how do you trigger a reconnect from > the server side? I only know "client-kill CID" or "kill cn" but the client > will not notice that until keep-alive timeout which would cause a long > disruption. Is it possible to send a sigusr1 restart to the client from > server?
doc/management-notes.txt fails to mention this, but the code says
msg(M_CLIENT, "client-kill CID [M] : Kill client instance CID with messag
e M (def=RESTART)");
... so client-kill *should* do the right thing: tell the client "come back
right away" (RESTART). There also is "RESTART,[N]" which I understand to
be "restart, but use the next server in your list" and "HALT", which is
"kill yourself".
The client-side code for this seems to be in forward.c,
check_incoming_control_channel_dowork()
else if (buf_string_match_head_str(&buf, "RESTART"))
{
server_pushed_signal(c, &buf, true, 7);
}
else if (buf_string_match_head_str(&buf, "HALT"))
{
server_pushed_signal(c, &buf, false, 4);
}
server_pushed_signal() is in push.c
server_pushed_signal(struct context *c, const struct buffer *buffer, const bool
restart, const int adv)
{
...
if (restart)
{
msg(D_STREAM_ERRORS, "Connection reset command was pushed by server
('%s')", m);
c->sig->signal_received = SIGUSR1; /* SOFT-SIGUSR1 -- server-pushed
connection reset */
c->sig->signal_text = "server-pushed-connection-reset";
}
else
{
msg(D_STREAM_ERRORS, "Halt command was pushed by server ('%s')", m);
c->sig->signal_received = SIGTERM; /* SOFT-SIGTERM -- server-pushed
halt */
c->sig->signal_text = "server-pushed-halt";
}
... and that sounds exactly like what you're asking for :-)
(And update to doc/management-notes.txt might be a good thing... David,
I think you understand the management interface on the server side best -
is anything else missing there?)
gert
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