基于socket套接字上传大文件

server端（服务端）

import socketimport structimport jsonserver = socket.socket()server.bind(('127.0.0.1', 8080))server.listen(5)while True:    conn, addr = server.accept()    while True:        try:            hander = conn.recv(4)            print('报头',hander)            if hander == 0: break            # 解析报头，并获取字典长度            dic_len = struct.unpack('i', hander)[0]            # 获得字典内容            real_dic = json.loads(conn.recv(dic_len))            # 从字典中获取 真实文件名和大小            file_name = real_dic.get('file_name')            file_size = real_dic.get('file_size')            # 接受真实数据并保存到文件中            with open(file_name, 'wb') as f:                size = 0                while size < file_size:                    res = conn.recv(1024)                    size += len(res)                    f.write(res)            print('接受成功')            break        except ConnectionResetError:            break

client端（客户端）

import socketimport jsonimport structimport osclient = socket.socket()client.connect(('127.0.0.1', 8080))# 获得文件名和文件大小while True:    dir_list = os.listdir(r'F:\pycharm文档\5.18\文件库')    # 打印出可选上传文件    [print(k,v) for k,v in enumerate(dir_list,start=1)]    choice  = input('>>>:')    if choice in ['1','2']:        file_name = dir_list[int(choice) - 1]        print('文件名：',file_name)        file_path = os.path.join(r'F:\pycharm文档\5.18\文件库',file_name)        # 得到文件大小        file_size = os.path.getsize(file_path)        print('文件大小：',file_size)        break    else:        print('again')# 制作报头字典内容dic = {    'file_name':file_name,    'file_size':file_size}dic_json = json.dumps(dic)dic_json_bytes = dic_json.encode('utf8')# 制作字典的报头hander = struct.pack('i',len(dic_json_bytes))client.send(hander)client.send(dic_json_bytes)# 发送真实数据with open(file_path,'rb') as f:    for line in f:        client.send(line)client.close()