解决粘包-简单版本

服务端：import socketimport subprocessimport struct#简易版缺点：struct 的数据i需要在4以内，如果发送的数据较大，会超过I,无法发送。因此需要优化#创建套接字server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)server.bind(('192.168.43.177',8093))server.listen(5)while True:    conn,addr = server.accept()    while True:        try:            cmd = conn.recv(8086)            if not cmd :break            obj = subprocess.Popen(cmd.decode('utf-8'),shell = True,                                   stdout = subprocess.PIPE,                                   stderr = subprocess.PIPE)            stdout = obj.stdout.read()            stderr = obj.stderr.read()            #3.把命令的结果返回给客户端            #第一步：制作固定长度的报头            total_size = len(stdout)+len(stderr)            header = struct.pack('i',total_size)            print(stdout)            conn.send(header)            #发送具体内容            conn.send(stdout)            conn.send(stderr)        except ConnectionResetError:            break    conn.close()server.close()客户端：

import socketimport subprocessimport structserver = socket.socket(socket.AF_INET,socket.SOCK_STREAM)server.connect(('192.168.43.177',8093))while True:    #1.发命令    cmd = input('>>:').strip()    if not cmd :continue    server.send(cmd.encode('utf-8'))    #2.拿命令的结果，并打印    # 第一步：先收报头    header = server.recv(4)    #第二步：从报头中解析出对真实数据描述    total_size = struct.unpack('i',header)[0]    #第三步：接收真实数据    recv_size = 0    recv_data = b''    print(total_size)    while recv_size < total_size:        res = server.recv(1024)        recv_data += res        recv_size += len(res)    print(recv_data.decode('gbk'))    # res1= server.recv(1024)    # print(res1.decode('gbk'))server.close()

来源：https://www.cnblogs.com/rainbowupdate/p/12255910.html