G<I>rande</I> U<I>nicast</I> M <I>ulticast</I> S <I>ender</I>

gums is multicast that just works, right out of the box.

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gums is designed for multicast mpegts video, but works with any multicast stream.

Latest is v.0.0.31

Install

python3 -mpip install gums

Use gums (Sender) programmatically

a@debian:~/gums$ pypy3
Python 3.9.16 (7.3.11+dfsg-2, Feb 06 2023, 16:52:03)
[PyPy 7.3.11 with GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>> from gums import GumS
>>>> gummie = GumS("235.35.3.5:3535")
>>>> gummie.send_stream("/home/a/mpegts/pcrvid.ts")

	Multicast Stream
	udp://@235.35.3.5:3535

	Source
	0.0.0.0:38835

49636512 Bytes Sent

>>>> 

gums (Sender) cli

• Supported input mpegts URIs:

  • files gums -i /home/me/vid.ts

  • http(s) gums -i https://futzu.com/xaa.ts

  • udp gums -i udp://127.0.0.1:4000

  • multicast gums -i udp://@235.1.2.3:4567

  • reading from stdin cat myvideo.ts | gums

usage: gums [-h] [-i INPUT] [-a ADDR] [-b BIND_ADDR] [-t TTL] [-v]

optional arguments:
  -h, --help           Show this help message and exit

-i INPUT, --input INPUT
                       Like "/home/a/vid.ts" or "udp://@235.35.3.5:3535" or "https://futzu.com/xaa.ts"

-a ADDR, --addr ADDR     
                       Destination IP:Port like "227.1.3.10:4310"

-b BIND_ADDR, --bind_addr BIND_ADDR
                        
                       Local IP to bind to like "192.168.1.34". Default is 0.0.0.0

-t TTL, --ttl TTL       
                       Multicast TTL 1 - 255

-v, --version          
                       Show version

start gums (Sender) cli

a@debian:~/gums$ gums -i any.file 
stream uri: udp://@235.35.3.5:3535
a@debian:~/gums$ 

gumc (Client) cli

usage: gumc [-h] [-i INSTUFF] [-b BYTESIZE] [-v]

options:
  -h, --help            show this help message and exit
  -i INSTUFF, --instuff INSTUFF
                        default is 'udp://@235.35.3.5:3535'
  -b BYTESIZE, --bytesize BYTESIZE
                        Number of bytes to read. default is to read all.
  -v, --version         Show version

start gumc (Client) cli

a@debian:~/build/clean/gums$ gumc -i udp://@235.35.3.5:3535 -b 1024

Test gums and gumc together

• first terminal, start the client, gumc

a@debian:~/build/clean/gums$  gumc -b 5 -i udp://@235.35.3.5:3535

• second terminal,start the sender, gums__ and send a "hello"

a@debian:~/build/clean/gums$ printf 'hello' | gums -a 235.35.3.5:3535
stream uri: udp://@235.35.3.5:3535

read all bytes from multicast stream and write to file with gumc (Client)

gumc -i udp://@235.35.3.5:3535 -o output.ts

read 13 bytes from a multicast stream with gumc (Client)

gumc -i udp://@235.35.3.5:3535 -b 13

read 10000 bytes from a multicast stream with gumc (Client)

 gumc -i udp://@235.35.3.5:3535 -b 10000

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