Developing a basic NATS application

We started learning Tuxedo by developing a TOUPPER service first. We will do the same for NATS to compare where it is similar to Tuxedo and see what the main differences are.

Let's create a toupper.py application with the following content:

import asyncio
from nats.aio.client import Client
nc = Client()
async def TOUPPER(msg):
    await nc.publish(msg.reply, msg.data.decode().upper().encode())
async def run(loop):
    await nc.connect(
        servers=["nats://host.docker.internal:4222"], loop=loop
    )
    await nc.subscribe("TOUPPER", cb=TOUPPER)
    try:
        msg = await nc.request(
            "TOUPPER",
          ...