47 lines
1.0 KiB
Python
47 lines
1.0 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
||
|
import socket
|
||
|
|
||
|
import pytest
|
||
|
|
||
|
NEXT_PORT = 10000
|
||
|
|
||
|
|
||
|
def check_port(port: int) -> bool:
|
||
|
tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||
|
udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
||
|
with tcp, udp:
|
||
|
try:
|
||
|
tcp.bind(("127.0.0.1", port))
|
||
|
udp.bind(("127.0.0.1", port))
|
||
|
return True
|
||
|
except socket.error:
|
||
|
return False
|
||
|
|
||
|
|
||
|
def check_port_range(port_range: range) -> bool:
|
||
|
for port in port_range:
|
||
|
if not check_port(port):
|
||
|
return False
|
||
|
return True
|
||
|
|
||
|
|
||
|
class Ports:
|
||
|
def allocate(self, num: int) -> int:
|
||
|
"""
|
||
|
Allocates
|
||
|
"""
|
||
|
global NEXT_PORT
|
||
|
while NEXT_PORT + num <= 65535:
|
||
|
start = NEXT_PORT
|
||
|
NEXT_PORT += num
|
||
|
if not check_port_range(range(start, NEXT_PORT)):
|
||
|
continue
|
||
|
return start
|
||
|
raise Exception("cannot find enough free port")
|
||
|
|
||
|
|
||
|
@pytest.fixture
|
||
|
def ports() -> Ports:
|
||
|
return Ports()
|