[PD] udpsend: unsure about raw data

Andy Farnell padawan12 at obiwannabe.co.uk
Sun May 24 14:26:25 CEST 2020

If it's a question of efficiency, to be really really sure,
maybe read the UDP packets off the wire/port with tcpdump,
which despite its name is quite happy to capture and show
UDP too.

tcpdump -i lo udp port 9000 -vv -X

You'll see any byte order munging or padding 
due to some NIC/network stack setups. On
my Debian systems it is indeed plain bytes.


On Sun, May 24, 2020 at 01:31:53PM +0200, rolfm at dds.nl wrote:
> hi, 
> i want to minimize the data stream send through an UDP connection 
> by sending 'coded' bytes; the receiver(s) will decode them. 
> i'm unsure about the meaning of 'raw data' in the helpfile of [udpsend].
> does [1 2 3( represent bytes with the octal vaue 001 002 003, 
> or the  integers 1 2 3 which will be 'translated' into the octal bytes
> 061 062 063 ? 
> it's a bit ambigious for me, especially comparing the helpfiles of
> [iemnet/udpsend] and [mrpeach/udpsend]. 
> with the iemnet version one cannot send files directly, it's necessary
> to use [binfile]. 
> does it mean that the mrpeach version recognizes that a file is used for
> input; 
> wow that [binfile] is embedded in its [udpsend]? 
> rolf

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