Hump

Hump (a defining part of grizzly's neck) is a zero-dependency simple async web server framework for registering request handlers

Why

• Because dataclasses have smaller overhead than Pydantic models.
• "I understand how something works only if i know how to create it myself"
• Making software from scratch is something that is inherently fun and challenging

How

1. Python socket package provides the means to connect/accept with AF_INET (TCP/IP) protocol
2. Create a socket, set it up as non-blocking, bind to host, port pair
3. Listen for incoming connections on socket
4. When client connects, accept, create an asyncio task to handle this request further, main return to 3 to accept other clients
5. Parse incoming request into dataclass Request model, pass it into registered async handler by url, method pair
6. Gather response data/Response object, encode to bytes and send it back
7. Close socket and finish task

Usage example

import asyncio
from hump import Hump, Request

app = Hump("", 8342)

@app.get("/")
async def index(request: Request):
    return "Hello, world!"

asyncio.run(app.serve())

And that's it, you can run this example, go to your browser and perform http request to localhost:8342 to get Hello, world! answer.

You can also return another HTTP status code with data attached like this

from hump import Response, statuses

# ... As defined in example usage before

@app.get("/")
async def index(request: Request)
    return Response("Howdy!", statuses.IM_A_TEAPOT)

Limitations

1. HTTP/1.1 only, no HTTPS
2. No automatic headers handling
3. No automatic json response handling, only str to Response wrapping