Ah okay. I read some posts about MTU and fragmentation. So in theory
2^16= 65536 Bytes should be possible, but not all nodes will accept such
large UDP packets and support the fragmentation of it?
FYI: My use case is that of a local network (IOT + Autonomous Robots)
and increasing the size would help me. :)
On 12.01.20 13:25, Doron Somech wrote:
We can increase it to around 65,000 bytes, however, large UDP packets
would probably be dropped when traveling outside your local area network.
The safe size for the UDP packet to travel outside of the local area
network is around 500 bytes.
If you do want to use large UDP packets on your local area network you
might want to increase the network MTU (jumbo frames) for better delivery.
For example, some AWS instances support 9001 bytes MTU for
inter-instance communication.
On Fri, Jan 10, 2020 at 3:25 PM Stephan Opfer <op...@vs.uni-kassel.de
<mailto:op...@vs.uni-kassel.de>> wrote:
Hi all,
since 2016 there is this issue
(https://github.com/zeromq/libzmq/issues/2009) about some
limitations of
the udp_engine in libzmq.
Is it possible that someone at least will increase the "#define
MAX_UDP_MSG 8192" in libzmq/src/udp_engine.hpp to some reasonable
value?
For example "ZMQ_MAX_MSGSZ" from the zmq context option, which is
MAX_INT.
Maybe, someone could spare some time at the Hackathon... ;-)
Greetings,
Stephan
--
Distributed Systems Research Group
Stephan Opfer T. +49 561 804-6279 F. +49 561 804-6277
Univ. Kassel, FB 16, Wilhelmshöher Allee 73, D-34121 Kassel
WWW: http://www.uni-kassel.de/go/vs_stephan-opfer/
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Distributed Systems Research Group
Stephan Opfer T. +49 561 804-6279 F. +49 561 804-6277
Univ. Kassel, FB 16, Wilhelmshöher Allee 73, D-34121 Kassel
WWW: http://www.uni-kassel.de/go/vs_stephan-opfer/
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