Intial Init

dnslookup.py

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+# -*- coding: utf-8 -*-
+# 此模块用于解析 SRV 记录，返回值为 IP 和 解析类型(srv 或者 normal)
+import dns.resolver
+
+def dns_lookup(ip): 
+    # 因为第一次解析是面向于 SRV 的，所以需要做是否带端口号的判断
+    if ':' in ip:
+        type = f'normal'
+        return ip, type
+
+    # 自定义 DNS 解析器
+    resolver = dns.resolver.Resolver()
+    resolver.nameservers = ['223.5.5.5', '223.6.6.6']  # 添加备用DNS
+    resolver.timeout = 5  # 单次查询超时时间
+    resolver.lifetime = 10  # 总解析时间限制
+    
+    try:
+        print(f'正在解析 SRV 记录: _minecraft._tcp.{ip}')
+        answers = resolver.resolve(f'_minecraft._tcp.{ip}', 'SRV')
+        
+        # address 的源输出末端有沟槽的 "."，去掉它
+        address = str(answers[0].target).rstrip('.')
+        port = answers[0].port
+        
+        # 拼接端口号,赋值 SRV
+        ip = f'{address}:{port}'
+        print(f'解析出 SRV 地址: {ip}')
+        type = f'srv'
+        return ip, type
+
+    except dns.resolver.NoAnswer:
+        print(f'无法解析SRV记录: _minecraft._tcp.{ip} (DNS服务器无答应)')
+    except dns.resolver.NXDOMAIN:
+        print(f'域名不存在SRV记录: _minecraft._tcp.{ip}')
+    except (dns.resolver.Timeout, dns.resolver.LifetimeTimeout):
+        print(f'DNS解析超时: {ip}')
+    except Exception as e:
+        print(f'DNS解析出现未知错误: {e}')
+
+    type = f'normal'
+    return ip, type