Docker images with TCP/UDP server examples

The purpose of this repository is to demonstrate simple tcp/udp servers based on different programming languages.

It also shows a typical containerization for them including multistage builds

Testing the containers

Once a container has been started, use socat and send the command DISCOVER from stdin to the sockets:

TCP

socat - tcp4-connect:localhost:54321

UDP

socat - udp4-connect:localhost:12345

Docker Image size

At the time of writing the image sizes for the respective demo docker images were as follows after adding multistage builds for all:

Image	Size
c-tcp-udp-server	80.6MB
cpp-tcp-udp-server	80.6MB
erlang-tcp-udp-server	259.0MB
golang-tcp-udp-server	10.4MB
java-spring-tcp-udp-server	184.0MB
java-tcp-udp-server	167.0MB
nodejs-tcp-udp-server	141.0MB
python-tcp-udp-server	48.2MB
rust-tcp-udp-server	73.0MB

References

• https://www.redhat.com/sysadmin/getting-started-socat