first commit

报文模拟解析/异地组网/打包/终端转成都.py

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+# -*- coding: utf-8 -*-
+import socket
+import threading
+import time
+
+#SERVER_A = ("127.0.0.1", 10)   # 终端IP地址
+#LISTEN_B = ("127.0.0.1", 8080)     # 本地监听端口，模拟服务端B，使用组网虚拟IP：172.16.1.59:8080
+
+# 从config.txt读取配置
+with open('./config.txt', 'r') as f:
+    lines = f.readlines()
+    # 第一行为SERVER_A的IP和端口，格式为0.0.0.0:10
+    server_a_parts = lines[0].strip().split(':')
+    SERVER_A = (server_a_parts[0], int(server_a_parts[1]))
+    
+    # 第二行为LISTEN_B的IP和端口，格式为0.0.0.0:10
+    listen_b_parts = lines[1].strip().split(':')
+    LISTEN_B = (listen_b_parts[0], int(listen_b_parts[1]))
+clients = []  # 保存所有连接到B的客户端
+
+def handle_client(conn, addr):
+    """服务端B处理客户端连接"""
+    print(f"[B] 客户端已连接: {addr}")
+    clients.append(conn)
+    try:
+        while True:
+            data = conn.recv(1024)
+            if not data:
+                break
+            print(f"[B] 收到客户端消息（一般不用处理）: {data!r}")
+    except Exception as e:
+        print(f"[B] 客户端异常: {e}")
+    finally:
+        clients.remove(conn)
+        conn.close()
+        print(f"[B] 客户端断开: {addr}")
+
+def start_server_b():
+    """启动服务端B"""
+    global server_b_started
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        s.bind(LISTEN_B)
+        s.listen(5)
+        server_b_started = True
+        print(f"[B] 模拟服务端B已启动，监听 {LISTEN_B}")
+        while True:
+            conn, addr = s.accept()
+            threading.Thread(target=handle_client, args=(conn, addr), daemon=True).start()
+    except Exception as e:
+        server_b_started = False
+        print(f"[B] 服务端B异常: {e}")
+
+def connect_server_a():
+    """连接服务端A，并转发数据到B的所有客户端"""
+    global server_b_started
+    while True:  # 添加外层循环以实现重连
+        try:
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.connect(SERVER_A)
+            print(f"[A] 已连接到服务端A: {SERVER_A}")
+            while True:
+                # 检查服务端B是否正常启动
+                if not server_b_started:
+                    print("[B] 警告: 服务端B没有正常启动，可能是使用了本机不存在的IP地址")
+                data = s.recv(4096)
+                if not data:
+                    print("[A] 连接关闭")
+                    break
+                print(f"[A] 收到数据 {len(data)} 字节，转发给B的客户端")
+                # 转发给所有已连接B的客户端
+                for c in clients[:]:
+                    try:
+                        c.sendall(data)
+                    except Exception as e:
+                        print(f"[B] 转发失败: {e}")
+                        clients.remove(c)
+                        c.close()
+            s.close()  # 正常关闭连接
+        except Exception as e:
+            print(f"[A] 连接失败: {e}")
+            print("[A] 10秒后尝试重新连接...")
+            time.sleep(10)  # 等待10秒后重新连接
+
+if __name__ == "__main__":
+    # 服务端B启动状态标志
+    server_b_started = False
+    # 启动服务端B
+    threading.Thread(target=start_server_b, daemon=True).start()
+    # 启动客户端去连接服务端A
+    connect_server_a()