Re: zepyr application to write on to UDP socket

Jukka Rissanen

Hi Giribabu,

do you mean IP header when you say "extra headers"?

If yes, then transferring raw UDP data without IP header is not
possible with current SLIP driver. You need to write your own driver
that would just transfer the data without any extra headers.


On Tue, 2016-09-20 at 16:02 +0530, Giribabu Gogineni wrote:
Hi Jukka,

Thanks for the feedback. 
When we use echo client running on QEMU using SLIP and we have server
application running on linux host, we receive the extra headers along
with data.

Our requirement is pass the UDP data from zephyr app using QEMU and
receive the same exact UDP packet on linux host side.
Please let us know, if we have any solution for this.

Thanks in advance ...


On Thu, Sep 1, 2016 at 7:21 PM, Jukka Rissanen <jukka.rissanen(a)linux.> wrote:
Hi Giribabu,

On Thu, 2016-09-01 at 17:15 +0530, Giribabu Gogineni wrote:
Hi Dev group,

In my application i want write UDP socket and send to linux host
using QEMU.

Is it possible to write an application to write payload on to UDP
That UDP socket is possible to send using QEMU to linux host?

Could you please help me, if sample application are available,
provide the path.
You can look how the echo-client and echo-server sample app do

Those apps can be found at

For instructions how to setup the SLIP from Qemu see the
samples/net/README file. Various tools for SLIP can be found in
tools project.

git clone

and check the README.legacy file in that directory.


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