Python Socket传输文件示例

1033次阅读  |  发布于5年以前

发送端可以不停的发送新文件,接收端可以不停的接收新文件。

例如:发送端输入:e:\visio.rar,接收端会默认保存为 e:\new_visio.rar,支持多并发,具体实现如下;

接收端:

方法一:


    #-*- coding: UTF-8 -*-
    import socket,time,SocketServer,struct,os,thread
    host='192.168.50.74'
    port=12307
    s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) #定义socket类型
    s.bind((host,port)) #绑定需要监听的Ip和端口号,tuple格式
    s.listen(1)


    def conn_thread(connection,address): 
      while True:
        try:
          connection.settimeout(600)
          fileinfo_size=struct.calcsize('128sl') 
          buf = connection.recv(fileinfo_size)
          if buf: #如果不加这个if,第一个文件传输完成后会自动走到下一句
            filename,filesize =struct.unpack('128sl',buf) 
            filename_f = filename.strip('\00')
            filenewname = os.path.join('e:\\',('new_'+ filename_f))
            print 'file new name is %s, filesize is %s' %(filenewname,filesize)
            recvd_size = 0 #定义接收了的文件大小
            file = open(filenewname,'wb')
            print 'stat receiving...'
            while not recvd_size == filesize:
              if filesize - recvd_size > 1024:
                rdata = connection.recv(1024)
                recvd_size += len(rdata)
              else:
                rdata = connection.recv(filesize - recvd_size) 
                recvd_size = filesize
              file.write(rdata)
            file.close()
            print 'receive done'
            #connection.close()
        except socket.timeout:
          connection.close()


    while True:
      connection,address=s.accept()
      print('Connected by ',address)
      #thread = threading.Thread(target=conn_thread,args=(connection,address)) #使用threading也可以
      #thread.start()
      thread.start_new_thread(conn_thread,(connection,address)) 

    s.close()

方法二:


    #-*- coding: UTF-8 -*-
    import socket,time,SocketServer,struct,os
    host='192.168.50.74'
    port=12307
    ADDR=(host,port)

    class MyRequestHandler(SocketServer.BaseRequestHandler):  
      def handle(self):   
        print('connected from:', self.client_address)
        while True:
          fileinfo_size=struct.calcsize('128sl') #定义文件信息。128s表示文件名为128bytes长,l表示一个int或log文件类型,在此为文件大小
          self.buf = self.request.recv(fileinfo_size)
          if self.buf: #如果不加这个if,第一个文件传输完成后会自动走到下一句
            self.filename,self.filesize =struct.unpack('128sl',self.buf) #根据128sl解包文件信息,与client端的打包规则相同
            print 'filesize is: ',self.filesize,'filename size is: ',len(self.filename) #文件名长度为128,大于文件名实际长度
            self.filenewname = os.path.join('e:\\',('new_'+ self.filename).strip('\00')) #使用strip()删除打包时附加的多余空字符
            print self.filenewname,type(self.filenewname)
            recvd_size = 0 #定义接收了的文件大小
            file = open(self.filenewname,'wb')
            print 'stat receiving...'
            while not recvd_size == self.filesize:
              if self.filesize - recvd_size > 1024:
                rdata = self.request.recv(1024)
                recvd_size += len(rdata)
              else:
                rdata = self.request.recv(self.filesize - recvd_size) 
                recvd_size = self.filesize
              file.write(rdata)
            file.close()
            print 'receive done'
        #self.request.close()

    tcpServ = SocketServer.ThreadingTCPServer(ADDR, MyRequestHandler) 
    print('waiting for connection...' )
    tcpServ.serve_forever()

发送端:


    #-*- coding: UTF-8 -*-
    import socket,os,struct
    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    s.connect(('192.168.50.74',12307))
    while True:

      filepath = raw_input('Please Enter chars:\r\n')
      if os.path.isfile(filepath):
        fileinfo_size=struct.calcsize('128sl') #定义打包规则
        #定义文件头信息,包含文件名和文件大小
        fhead = struct.pack('128sl',os.path.basename(filepath),os.stat(filepath).st_size)
        s.send(fhead) 
        print 'client filepath: ',filepath
        # with open(filepath,'rb') as fo: 这样发送文件有问题,发送完成后还会发一些东西过去
        fo = open(filepath,'rb')
        while True:
          filedata = fo.read(1024)
          if not filedata:
            break
          s.send(filedata)
        fo.close()
        print 'send over...'
        #s.close()

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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