python 基于tcp协议的文件传输3_解决粘包问题

server

import jsonimport structimport socket# 接收sk = socket.socket()sk.bind((‘127.0.0.1‘,9001))sk.listen()

conn,_ =sk.accept()msg_len = conn.recv(4)dic_len = struct.unpack(‘i‘,msg_len)[0]msg = conn.recv(dic_len).decode(‘utf-8‘)msg = json.loads(msg)

with open(msg[‘filename‘],‘wb‘) as f:    while msg[‘filesize‘] > 0:        content = conn.recv(1024)        msg[‘filesize‘] -= len(content)        f.write(content)conn.close()sk.close()

client

import osimport jsonimport structimport socket# 发送sk = socket.socket()# sk.connect((‘192.168.14.109‘,9012))sk.connect((‘127.0.0.1‘,9001))

# 文件名\文件大小abs_path = r‘D:\python22期\day28 课上视频\3.网络基础概念.mp4‘filename = os.path.basename(abs_path)filesize = os.path.getsize(abs_path)dic = {‘filename‘:filename,‘filesize‘:filesize}str_dic = json.dumps(dic)b_dic = str_dic.encode(‘utf-8‘)mlen = struct.pack(‘i‘,len(b_dic))sk.send(mlen)   # 4个字节 表示字典转成字节之后的长度sk.send(b_dic)  # 具体的字典数据

with open(abs_path,mode = ‘rb‘) as f:    while filesize>0:        content = f.read(1024)        filesize -= len(content)        sk.send(content)sk.close()

# 先登录# 能上传到固定目录\下载(从指定文件夹下选择文件)

原文地址：https://www.cnblogs.com/shaohuagu/p/12261556.html