[winswitch] UDP connection issues

[Igor Bukanov]

Hi,

I am trying to setup a udp connection to xpra server on Linux from a a
Linux client. Both server and client uses 3.0.5 version. I run the
server using

xpra start --bind-udp=0.0.0.0:port
--udp-auth=file:filename=.config/xpra/password :28

I can connect to it using ssh, but when I tried on the client:

xpra attach udp://server-ip:port/28

The client reported an error:

2020-01-15 14:28:23,228 Xpra GTK3 X11 client version 3.0.5-r24939 64-bit
...
2020-01-15 14:28:25,966 Error: failed to connect, received
2020-01-15 14:28:25,966
'8000000032108494958117100112459911111011611411110810548101105481011054810110548101100101108101101'

On the server side I see from the log:

2020-01-15 13:30:25,696 Error: connection timed out: udp socket:
0.0.0.0:server_port <- client_ip:52119

The connection is done over OpenVPN and I can ping the client ip from
the server.

Any clues?