python3 解决tcp黏包方法一

-------------------------------------------tcp_server.py-------------------------------------------

# coding:utf-8import socketimport subprocess

server = socket.socket()ip_port = ("127.0.0.1", 8001)server.bind(ip_port)server.listen(5)

conn, addr = server.accept()from_client_msg = conn.recv(1024)print("来自客户端的消息:", from_client_msg.decode("utf-8"))cmd = input(">>>:").strip()res = subprocess.Popen(    cmd,    shell=True,    stdout=subprocess.PIPE,    stderr=subprocess.PIPE,)cmd_result = res.stdout.read()if res.stderr.read():    cmd_result = res.stderr.read()cmd_result_len = len(cmd_result)print(cmd_result_len)conn.send(str(cmd_result_len).encode("utf-8"))  # 先发送数据的长度from_client_msg = conn.recv(1024)if from_client_msg.decode("utf-8") == "recv_ready":    conn.sendall(cmd_result)  # 再发送真实数据

conn.close()server.close()

-------------------------------------------tcp_client.py-------------------------------------------

# coding:utf-8import socket

client = socket.socket()ip_port = ("127.0.0.1", 8001)client.connect(ip_port)

client.send("我是客户端.".encode("utf-8"))from_serve_msg = client.recv(1024)  # 接收数据长度print("来自服务端的消息:", from_serve_msg.decode("utf-8"))if from_serve_msg.decode("utf-8").isdigit():    from_serve_msg_len = int(from_serve_msg)    client.send("recv_ready".encode("utf-8"))    from_serve_msg = client.recv(from_serve_msg_len)  # 接收真实数据    recv_ready_len = len(from_serve_msg)    while from_serve_msg_len > recv_ready_len:  # 如果真实数据一次没有接收完        from_serve_msg += client.recv(from_serve_msg_len)  # 继续接收数据        recv_ready_len = len(from_serve_msg)

    print("来自客户端的消息:", from_serve_msg.decode("gbk"))

client.close() 

原文地址：https://www.cnblogs.com/lilyxiaoyy/p/10929947.html