asyncio-dgram 2.2.0

Description:

asynciodgram 2.2.0

Higher level Datagram support for Asyncio
Simple wrappers that allow you to await read() from datagrams as suggested
by Guido van Rossum
here. I
frequently found myself having to inherit from asyncio.DatagramProtocol and
implement this over and over.
Design
The goal of this package is to make implementing common patterns that use datagrams
simple and straight-forward while still supporting more esoteric options. This is done
by taking an opinionated stance on the API that differs from parts of asyncio. For instance,
rather than exposing a function like
create_datagram_endpoint
which supports many use-cases and has conflicting parameters, asyncio_dgram
only provides three functions for creating a stream:

connect((host, port)): Creates a datagram endpoint which can only
communicate with the endpoint it connected to.
bind((host, port)): Creates a datagram endpoint that can communicate
with anyone, but must specified the destination address every time it
sends.
from_socket(sock): If the above two functions are not sufficient, then
asyncio_dgram simply lets the caller setup the socket as they see fit.

Example UDP echo client and server
Following the example of asyncio documentation, here's what a UDP echo client
and server would look like.
import asyncio

import asyncio_dgram


async def udp_echo_client():
stream = await asyncio_dgram.connect(("127.0.0.1", 8888))

await stream.send(b"Hello World!")
data, remote_addr = await stream.recv()
print(f"Client received: {data.decode()!r}")

stream.close()


async def udp_echo_server():
stream = await asyncio_dgram.bind(("127.0.0.1", 8888))

print(f"Serving on {stream.sockname}")

data, remote_addr = await stream.recv()
print(f"Echoing {data.decode()!r}")
await stream.send(data, remote_addr)

await asyncio.sleep(0.5)
print(f"Shutting down server")


def main():
loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.gather(udp_echo_server(), udp_echo_client()))


if __name__ == "__main__":
main()