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  • 解决粘包问题

    服务端

    import socket
    import subprocess
    import struct
    import json
    
    
    server = socket.socket()
    server.bind(('127.0.0.1',8080))
    server.listen(5)
    
    
    while True:
        conn, addr = server.accept()
        while True:
            try:
                cmd = conn.recv(1024)
                if len(cmd) == 0:break
                cmd = cmd.decode('utf-8')
                obj = subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
                res = obj.stdout.read() + obj.stderr.read()
                d = {'name':'jason','file_size':len(res),'info':'asdhjkshasdad'}
                json_d = json.dumps(d)
                # 1.先制作一个字典的报头
                header = struct.pack('i',len(json_d))
                # 2.发送字典报头
                conn.send(header)
                # 3.发送字典
                conn.send(json_d.encode('utf-8'))
                # 4.再发真实数据
                conn.send(res)
                # conn.send(obj.stdout.read())
                # conn.send(obj.stderr.read())
            except ConnectionResetError:
                break
        conn.close()

    客户端

    import socket
    import struct
    import json
    
    client = socket.socket()
    client.connect(('127.0.0.1',8080))
    
    while True:
        msg = input('>>>:').encode('utf-8')
        if len(msg) == 0:continue
        client.send(msg)
        # 1.先接受字典报头
        header_dict = client.recv(4)
        # 2.解析报头 获取字典的长度
        dict_size = struct.unpack('i',header_dict)[0]  # 解包的时候一定要加上索引0
        # 3.接收字典数据
        dict_bytes = client.recv(dict_size)
        dict_json = json.loads(dict_bytes.decode('utf-8'))
        # 4.从字典中获取信息
        print(dict_json)
        recv_size = 0
        real_data = b''
        while recv_size < dict_json.get('file_size'):  # real_size = 102400
            data = client.recv(1024)
            real_data += data
            recv_size += len(data)
        print(real_data.decode('gbk'))
    
    
    
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  • 原文地址:https://www.cnblogs.com/wkq0220/p/11318914.html
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