43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
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import socket
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import os
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import random
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import string
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from . import sam
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def get_free_port():
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"""Get a free port on your local host"""
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(('', 0))
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free_port = s.getsockname()[1]
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s.close()
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return free_port
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def is_address_accessible(address):
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"""Check if address is accessible or down"""
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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is_accessible = s.connect_ex(address) == 0
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s.close()
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return is_accessible
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def address_from_string(address_string):
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"""Address tuple from host:port string"""
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address = address_string.split(":")
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return (address[0], int(address[1]))
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def get_sam_address():
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"""
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Get SAM address from environment variable I2P_SAM_ADDRESS, or use a default
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value
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"""
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value = os.getenv("I2P_SAM_ADDRESS")
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return address_from_string(value) if value else sam.DEFAULT_ADDRESS
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def generate_session_id(length=6):
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"""Generate random session id"""
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rand = random.SystemRandom()
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sid = [rand.choice(string.ascii_letters) for _ in range(length)]
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return "reticulum-" + "".join(sid)
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