mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-11-14 11:08:15 +01:00
39 lines
962 B
Python
39 lines
962 B
Python
|
"""Helper methods to tune a TCP connection"""
|
||
|
|
|
||
|
|
import asyncio
|
||
|
|
import socket
|
||
|
|
from contextlib import suppress
|
||
|
|
from typing import Optional # noqa
|
||
|
|
|
||
|
|
__all__ = ("tcp_keepalive", "tcp_nodelay")
|
||
|
|
|
||
|
|
|
||
|
|
if hasattr(socket, "SO_KEEPALIVE"):
|
||
|
|
|
||
|
|
def tcp_keepalive(transport: asyncio.Transport) -> None:
|
||
|
|
sock = transport.get_extra_info("socket")
|
||
|
|
if sock is not None:
|
||
|
|
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
|
||
|
|
|
||
|
|
|
||
|
|
else:
|
||
|
|
|
||
|
|
def tcp_keepalive(transport: asyncio.Transport) -> None: # pragma: no cover
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
def tcp_nodelay(transport: asyncio.Transport, value: bool) -> None:
|
||
|
|
sock = transport.get_extra_info("socket")
|
||
|
|
|
||
|
|
if sock is None:
|
||
|
|
return
|
||
|
|
|
||
|
|
if sock.family not in (socket.AF_INET, socket.AF_INET6):
|
||
|
|
return
|
||
|
|
|
||
|
|
value = bool(value)
|
||
|
|
|
||
|
|
# socket may be closed already, on windows OSError get raised
|
||
|
|
with suppress(OSError):
|
||
|
|
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, value)
|