It works now

README

@@ -0,0 +1,3 @@
+# My IP
+
+This script is mostly generated by AI

myip.py

@@ -0,0 +1,80 @@
+import http.server
+import socket
+import socketserver
+import ipaddress
+import logging
+from datetime import datetime
+
+# 日志配置（线程安全），按时间和级别输出到 stdout
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s %(levelname)s %(message)s",
+    datefmt="%Y-%m-%d %H:%M:%S",
+)
+
+class TCPServer6(socketserver.TCPServer):
+    address_family = socket.AF_INET6
+    allow_reuse_address = True
+
+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,
+            self.path,
+            client_ip,
+            x_forwarded_for if x_forwarded_for is not None else "-",
+            status_code,
+        )
+
+    def do_GET(self):
+        # 获取请求头中的 'X-Forwarded-For' 或 'Remote-Addr'
+        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
+        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）
+        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）
+            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
+                s = s.split(':')[-1]
+                client_ip = s
+
+        # 发送响应
+        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
+        try:
+            self.log_response(status_code, client_ip, x_forwarded_for)
+        except Exception:
+            logging.exception("Failed to log response")
+
+if __name__ == "__main__":
+    PORT = 8080
+    # 对于 AF_INET6 使用四元组绑定所有 IPv6 地址
+    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
+        try:
+            httpd.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
+        except Exception:
+            pass
+        logging.info("Serving on [::]:%d", PORT)
+        httpd.serve_forever()
+