代理连接格式：IP:PORT:USERNAME:PASSWORD

"""Turn IP:PORT:USERNAME:PASSWORD lines into proxy URLs, with safe encoding."""
import sys
from urllib.parse import quote


def to_proxy_url(line, scheme='http'):
    # maxsplit=3 keeps a password that itself contains ':' in one piece
    ip, port, user, password = line.strip().split(':', 3)
    return f'{scheme}://{quote(user, safe="")}:{quote(password, safe="")}@{ip}:{port}'


path = sys.argv[1] if len(sys.argv) > 1 else 'proxies.txt'
with open(path, encoding='utf-8') as handle:
    for line in handle:
        if line.strip():
            print(to_proxy_url(line))                    # HTTP proxy URL
            print(to_proxy_url(line, scheme='socks5h'))  # SOCKS5, DNS on the proxy

// Turn IP:PORT:USERNAME:PASSWORD lines into proxy URLs (Node.js 18 or later).
import { readFileSync } from 'node:fs';

function toProxyUrl(line, scheme = 'http') {
  const [ip, port, user, ...rest] = line.trim().split(':');
  const password = rest.join(':'); // a password may itself contain ':'
  return `${scheme}://${encodeURIComponent(user)}:${encodeURIComponent(password)}@${ip}:${port}`;
}

const lines = readFileSync(process.argv[2] ?? 'proxies.txt', 'utf8').split(/\r?\n/).filter(Boolean);
for (const line of lines) {
  console.log(toProxyUrl(line));
  console.log(toProxyUrl(line, 'socks5h'));
}

http://user-7:p%40ss%3Aw%2Frd%[email protected]:8000
socks5h://user-7:p%40ss%3Aw%2Frd%[email protected]:8000