Python client/server UDP in docker

Configuration

Build image

docker build -t myimage .

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Client in Container1 and Server in Container2

Create bridge network

docker network create mynet

Execute Server UDP in Container server

docker run -it --rm --network mynet --name server myimage python3 /workspace/serverUDP.py server 2000

Execute Client UDP in Container client

docker run -it --rm --network mynet --name client myimage python3 /workspace/clientUDP.py server 2000

Note: You must create bridge network for use the hostname server.

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Client on Host and Server in Container

Execute Server UDP in Container

docker run -it --rm -p 2000:2000/udp --name server myimage python3 /workspace/serverUDP.py 0.0.0.0 2000

Execute Client UDP on Host

python3 clientUDP.py localhost 2000

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Client in Container and Server on Host

Execute Server UDP on Host

python3 serverUDP.py localhost 2000

Execute Client UDP in Container

docker run -it --rm --name client myimage python3 /workspace/clientUDP.py host.docker.internal 2000

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Client on Host1 and Server on Host2

Get repository on both hosts (they must be on same network). Get ipv4 of server host and execute:

python3 serverUDP.py HOST_IP PORT

Then execute the client on secondo host:

python3 clientUDP.py HOST_IP PORT

Note: HOST_IP is the ipv4 of server host, and PORT is the port selected for communication.

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Client in Host1 and Server on Container/Host2

Execute Server UDP in Container on Host2

docker run -it --rm -p 2000:2000/udp --name server myimage python3 /workspace/serverUDP.py 0.0.0.0 2000

Execute Client UDP on Host1

python3 clientUDP.py IP_HOST2 2000

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Client in Container/Host1 and Server on Host2

Execute Server UDP on Host2

python3 serverUDP.py IP_HOST2 2000

Execute Client UDP in Container on Host1

docker run -it --rm --name client myimage python3 /workspace/clientUDP.py IP_HOST2 2000

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Client in Container/Host1 and Server in Container/Host2

Execute Server UDP in Container server on Host2

docker run -it --rm -p 2000:2000/udp --name server myimage python3 /workspace/serverUDP.py 0.0.0.0 2000

Execute Client UDP in Container client on Host1

docker run -it --rm --name client myimage python3 /workspace/clientUDP.py IP_HOST2 2000

Note: You must create bridge network for use the hostname server.

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EXTRA NOTES:

If you use vscode dev inside Container use:

"runArgs": [ "...other...", "--name", "APP_NAME", "-p", "2000:2000/udp"],

else if you use tcp port:

"forwardPorts": [2000]