Add option -p, remove all non-ASCII charactor

myip.py

@@ -3,9 +3,9 @@ import socket
 import socketserver
 import ipaddress
 import logging
-from datetime import datetime
+import argparse
 
-# 日志配置（线程安全），按时间和级别输出到 stdout
+# Configure logging (thread-safe), output time and level to stdout
 logging.basicConfig(
     level=logging.INFO,
     format="%(asctime)s %(levelname)s %(message)s",
@@ -18,7 +18,6 @@ class TCPServer6(socketserver.TCPServer):
 
 class MyHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
     def log_response(self, status_code, client_ip, x_forwarded_for):
-        # 记录每次响应的日志
         logging.info(
             "method=%s path=%s client_ip=%s x_forwarded_for=%s status=%d",
             self.command,
@@ -29,48 +28,55 @@ class MyHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
         )
 
     def do_GET(self):
-        # 获取请求头中的 'X-Forwarded-For' 或 'Remote-Addr'
+        # Get 'X-Forwarded-For' header or remote address
         x_forwarded_for = self.headers.get('X-Forwarded-For')
         remote_addr = self.client_address[0]
 
-        # 客户端 IP 优先选择 X-Forwarded-For
+        # Prefer client IP from X-Forwarded-For if present
         client_ip = (x_forwarded_for.split(',')[0].strip() if x_forwarded_for else remote_addr)
 
-        # 将 IPv4-mapped IPv6 地址转换为纯 IPv4（例如 ::ffff:127.0.0.1 -> 127.0.0.1）
+        # Convert IPv4-mapped IPv6 addresses to plain IPv4 (e.g. ::ffff:127.0.0.1 -> 127.0.0.1)
         try:
             ip_obj = ipaddress.ip_address(client_ip)
             if isinstance(ip_obj, ipaddress.IPv6Address) and ip_obj.ipv4_mapped:
                 client_ip = str(ip_obj.ipv4_mapped)
         except ValueError:
-            # 如果解析失败（非标准格式），尝试手工处理以防某些代理返回带方括号或端口
-            # 移除 IPv6 方括号及端口（如 [::ffff:127.0.0.1]:8080）
+            # If parsing fails (non-standard format), attempt manual handling to cope with some proxies
+            # Remove IPv6 brackets and port (e.g. [::ffff:127.0.0.1]:8080)
             s = client_ip
             if s.startswith('[') and ']' in s:
                 s = s.split(']', 1)[0].lstrip('[')
             if s.count(':') >= 2 and s.startswith('::ffff:'):
-                # 处理可能带端口的情况
+                # Handle possible port by taking the last segment
                 s = s.split(':')[-1]
                 client_ip = s
 
-        # 发送响应
+        # Send response
         status_code = 200
         self.send_response(status_code)
         self.send_header("Content-type", "text/plain")
         self.end_headers()
         self.wfile.write(client_ip.encode())
 
-        # 在响应后记录日志
+        # Log after responding
         try:
             self.log_response(status_code, client_ip, x_forwarded_for)
         except Exception:
             logging.exception("Failed to log response")
 
+def parse_args():
+    parser = argparse.ArgumentParser(description="Simple IPv6-capable HTTP server that returns client IP.")
+    parser.add_argument("-p", "--port", type=int, default=8080, help="Port to listen on (default: 8080)")
+    return parser.parse_args()
+
 if __name__ == "__main__":
-    PORT = 8080
-    # 对于 AF_INET6 使用四元组绑定所有 IPv6 地址
+    args = parse_args()
+    PORT = args.port
+
+    # For AF_INET6 bind to all IPv6 addresses using a 4-tuple
     server_address = ("::", PORT, 0, 0)
     with TCPServer6(server_address, MyHTTPRequestHandler) as httpd:
-        # 可选：在绑定前设置 IPV6_V6ONLY，若需要同时接受 IPv4 映射地址可设为 0
+        # Optionally set IPV6_V6ONLY. Set to 0 to accept IPv4-mapped addresses as well.
         try:
             httpd.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
         except Exception: