• 断点续传


    #FTPconfsettings.py


    import os import sys BASE_DIR=os.path.dirname(os.path.dirname(__file__)) BASE_CLIENT=os.path.join(BASE_DIR,"db","client") BASE_SERVER=os.path.join(BASE_DIR,"db","server") BASE_USE=os.path.join(BASE_DIR,'db','user') BASE_admin=os.path.join(BASE_DIR,'db','admin') sys.path.append(BASE_DIR)

    FTPinhead.py

    import json
    import os
    import struct
    from conf.settings import *
    
    def recv_head(client):
        head_len=client.recv(4)
        if not head_len:
            raise Exception("对方已下线")
        lens= struct.unpack("i",head_len)[0]
        # print(lens)
        rep= json.loads(client.recv(lens))
        return rep
    
    def send_rep(client,rep):
    
        jdata=json.dumps(rep).encode("utf-8")
        # print(jdata)
        client.send(struct.pack('i',len(jdata)))
        client.send(jdata)
    # 判断服务端文件
    def choice(path):
        name=os.path.split(path)[1]
        # print(name)
        if name in os.listdir(BASE_SERVER):
            return True
        return False
    # 判断客户端文件
    def clientfile(path):
        name = os.path.split(path)[1]
        # print(name)
        if name in os.listdir(BASE_CLIENT):
            return True
        return False
    

    FTPinFTPserver.py

    mport os
    import socket
    import struct
    import json
    from bin.head import *
    from conf.settings import *
    server = socket.socket()
    server.bind(("127.0.0.1",8081))
    server.listen(5)
    
    def upload(client):
        # 接收json数据
        rep = recv_head(client)
    
        file_path = os.path.join(BASE_SERVER, rep['filename'])
    
        datasunm = 0
        while int(rep["filesize"]) >= datasunm:
    
            if choice(rep['filename']):
                file_size = os.path.getsize(file_path)
    
                client.send(str(file_size).encode("utf-8"))
    
                with open(file_path, "ab") as rb:
                    client_data = client.recv(2048)
                    rb.write(client_data)
                    datasunm += len(client_data)
                    print(len(client_data))
    
            else:
                client.send("F".encode("utf-8"))
    
                with open(file_path, "wb") as rb:
                    client_data = client.recv(2048)
                    rb.write(client_data)
                    datasunm += len(client_data)
                    print(len(client_data))
        client.close()
    # 下载
    def download(client):
        #  获取文件信息
        reps = recv_head(client)
        print(reps)
        # 服务端文件地址
        file_path = os.path.join(BASE_SERVER, reps['filename'])
        # 本地文件大小
        file_size = os.path.getsize(file_path)
        # 发送系统文件大小
        dic = {"filesize": file_size}
        send_rep(client, dic)
    
        requ = recv_head(client)
        print(requ['filesize'])
        index = int(requ['filesize'])
    
        with open(file_path, "rb") as rf:
    
            rf.seek(index)
            while index <= file_size:
                data = rf.read(2048)
                client.send(data)
                rf.flush()
                index += len(data)
                print(index)
                if index == file_size: break
            rf.close()
            print("发送完成")

     

    def recv_heads(server):
        while True:
            try:
               client,addr=server.accept()
               # 上传
                upload(client)
                download(client)
    
            except ConnectionResetError as e:
                   print("客户端断开")
    

      

    FTPinFTPclient.py

    from conf.settings import *
    import socket
    
    from bin.head import *
    client=socket.socket()
    
    client.connect(('127.0.0.1',8081))
    
    def upload(client,size,path):
        file_size = client.recv(1028).decode("utf-8")
        # print(file_size)
        if file_size == "F":
            index = 0
            print(index)
        else:
            index = int(file_size)
            print(index)
    
        with open(path, "rb") as rf:
            rf.seek(index)
            while index <= size:
                data = rf.read(2048)
                client.send(data)
                rf.flush()
                index += len(data)
                print(index)
                if index == size: break
            rf.close()
            print("下载完成")
    
    # 上传端
    def sender(client,path):
        if  not os.path.exists(path):
            print("文件不存在")
            return
        name=os.path.split(path)[1]
        size=os.path.getsize(path)
        # print(size)
        rep={"filename":name,"filesize": size}
        send_rep(client,rep)
    
        # 上传端
        upload(client, size,path)
    
    # 下载端
    def download(client,name):
    
        dic = {"filename": name}
        send_rep(client, dic)
    
        file_size=recv_head(client)
    
        # 系统文件大小
        size=int(file_size['filesize'])
    
        # 存储文件地址
        filepath = os.path.join(BASE_CLIENT, name)
    
        # # 如果有文件不覆写
        datasunm = 0
        while datasunm < size:
            # 如果目录内存在文件
            if clientfile(filepath):
    
               filesize=os.path.getsize(filepath)
    
               dic={"filesize":filesize}
               send_rep(client,dic)
               with open(filepath,"ab") as rf:
                   data=client.recv(2048)
                   rf.write(data)
                   datasunm+=len(data)
                   print(datasunm)
            else:
                # 如果目录内文件不存在
                filesize=0
                dic = {"filesize": filesize}
                send_rep(client, dic)
                with open(filepath, "wb") as rf:
                    data = client.recv(2048)
                    rf.write(data)
                    datasunm += len(data)
                    print(datasunm)
        client.close()
    

      

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  • 原文地址:https://www.cnblogs.com/xzcvblogs/p/11005593.html
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