I have done this:
I do not get the packages, but a reconnect is also not established...
int alive = 1, alive_idle = 1, alive_probes = 1, alive_intvl = 1;
int rc = zmq_setsockopt(publisher, ZMQ_TCP_KEEPALIVE, &alive, sizeof alive);
assert(rc == 0);
rc = zmq_setsockopt(publisher, ZMQ_TCP_KEEPALIVE_IDLE, &alive_idle,
sizeof alive_idle);
assert(rc == 0);
rc = zmq_setsockopt(publisher, ZMQ_TCP_KEEPALIVE_CNT, &alive_probes,
sizeof alive_probes);
assert(rc == 0);
rc = zmq_setsockopt(publisher, ZMQ_TCP_KEEPALIVE_INTVL, &alive_intvl,
sizeof alive_intvl);
assert(rc == 0);
Am 27.08.2015 um 15:13 schrieb KIU Shueng Chuan:
You could use the tcp keepalive socket options to make the tcp
connection drop faster once you have unplugged your cable. That should
cause the queued packets to be dropped.
Or your subscriber could drain the socket of messages by reading it
until it would block and only process the last one.
On Aug 27, 2015 20:42, "Bachmair Florian - flexSolution GmbH"
<[email protected]
<mailto:[email protected]>> wrote:
ok, thank you!
I have to think about that, because I want to use curve as well,
and therefore I would need tcp...
Am 27.08.2015 um 14:12 schrieb Sergey Zinov:
Seems like that should be the case. TCP is a reliable protocol,
it buffers all data till it acknowledged by receiver and resend
when needed. Switch to the UDP if don't need that reliability.
On 27.08.2015 14:07, Bachmair Florian - flexSolution GmbH wrote:
This does not work either :/
I'm unsing PUB/SUB via tcp.
I have captured the tcp connection with tcpdump and I saw that
after I unplug the cable I get tcp retransmission packets.
May this be more a behaviour of tcp itself than of zmq?
Am 27.08.2015 um 13:39 schrieb Sergey Zinov:
Hi,
Try to set ZMQ_SNDHWM to 1. By the way which transport are you
using?
On 27.08.2015 11:52, Bachmair Florian - flexSolution GmbH wrote:
I tried it, but it does not work!
Don't know If I get that right, but even If I set
ZMQ_RECONNECT_IV to "-1" my PUB and SUB Sockets are
reconnecting to each other after I replug the cable
Am 27.08.2015 um 10:59 schrieb Doron Somech:
I'm not sure, but try to set ZMQ_IMMEDIATE option.
On Aug 27, 2015 11:38 AM, "Bachmair Florian - flexSolution
GmbH" <[email protected]
<mailto:[email protected]>> wrote:
Hello!
Is there a opportunity to tell the publisher not to
resend messages?
I have two stations A and B
A publishes all the time
B receives it
A-PUB 10
B-SUB 10
A-PUB 20
B-SUB 20
A-PUB 30
B-SUB 30
A-PUB 40
B-SUB 40
---unplug cable
A-PUB 50
A-PUB 60
A-PUB 70
---plug cable again
B-SUB 50
B-SUB 60
B-SUB 70
....
B does some routines after it gets those values. But I'm
not interested
in 50 and 60 any more, I just want the 70 after reconnection.
I do Heartbeating so I detect connection lost on my own
and I can
request the last value as well. So is this possible to
disable the
resend mechanism?
Thx
Florian
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--
Sergey Zinov
Wissenschaftlicher Mitarbeiter
Fachbereich Elektrotechnik, Maschinenbau und Wirtschaftsingenieurwesen
Hochschule Anhalt
/
Research Assistant
Department of Electrical, Mechanical and Industrial Engineering
Anhalt University of Applied Sciences
Phone:+4915738145172 <tel:%2B4915738145172>
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--
Sergey Zinov
Wissenschaftlicher Mitarbeiter
Fachbereich Elektrotechnik, Maschinenbau und Wirtschaftsingenieurwesen
Hochschule Anhalt
/
Research Assistant
Department of Electrical, Mechanical and Industrial Engineering
Anhalt University of Applied Sciences
Phone:+4915738145172 <tel:%2B4915738145172>
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