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57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
#!/usr/bin/env python3
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#
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# Simple functional tests for VNC functionality
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#
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# Copyright 2018, 2024 Red Hat, Inc.
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or
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# later. See the COPYING file in the top-level directory.
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import fcntl
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import os
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import socket
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import sys
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import tempfile
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from .config import BUILD_DIR
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from typing import List
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class Ports():
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PORTS_ADDR = '127.0.0.1'
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PORTS_RANGE_SIZE = 1024
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PORTS_START = 49152 + ((os.getpid() * PORTS_RANGE_SIZE) % 16384)
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PORTS_END = PORTS_START + PORTS_RANGE_SIZE
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def __enter__(self):
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lock_file = os.path.join(BUILD_DIR, "tests", "functional", "port_lock")
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self.lock_fh = os.open(lock_file, os.O_CREAT)
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fcntl.flock(self.lock_fh, fcntl.LOCK_EX)
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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fcntl.flock(self.lock_fh, fcntl.LOCK_UN)
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os.close(self.lock_fh)
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def check_bind(self, port: int) -> bool:
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
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try:
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sock.bind((self.PORTS_ADDR, port))
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except OSError:
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return False
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return True
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def find_free_ports(self, count: int) -> List[int]:
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result = []
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for port in range(self.PORTS_START, self.PORTS_END):
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if self.check_bind(port):
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result.append(port)
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if len(result) >= count:
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break
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assert len(result) == count
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return result
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def find_free_port(self) -> int:
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return self.find_free_ports(1)[0]
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