Python Socket Transfer File

The sender can continuously send new files, and the receiving end can receive new files continuously.

For example: send-side input: E:\visio.rar, the receiver will be saved by default as E:\new_visio.rar, support multiple concurrency, the implementation of the following;

Receiving end:

Method One:

#-*-coding:utf-8-*-ImportSocket,time,socketserver,struct,os,threadhost='192.168.50.74'Port=12307s=socket.socket (Socket.af_inet,socket. SOCK_STREAM)#Defining socket TypesS.bind ((Host,port))#IP and port number to be monitored by the binding, tuple formatS.listen (1) defConn_thread (connection,address): whileTrue:Try: Connection.settimeout (600) Fileinfo_size=struct.calcsize ('128SL') BUF=connection.recv (fileinfo_size)ifBuf#If you do not add this if, the first file transfer will automatically go to the next sentenceFilename,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#define the file size that was receivedFile = Open (Filenewname,'WB')                Print 'Stat Receiving ...'                 while  notRecvd_size = =FileSize:ifFilesize-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 ()        exceptsocket.timeout:connection.close () whiletrue: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 ()

Method Two:

#-*-coding:utf-8-*-ImportSocket,time,socketserver,struct,oshost='192.168.50.74'Port=12307ADDR=(Host,port)classMyrequesthandler (socketserver.baserequesthandler):defhandle (self):Print('Connected from:', self.client_address) whiletrue:fileinfo_size=struct.calcsize ('128SL')#defines the file information. 128s indicates that the file name is 128bytes long and L represents an int or log file type, where the file sizeSelf.buf =self.request.recv (fileinfo_size)ifSELF.BUF:#If you do not add this if, the first file transfer will automatically go to the next sentenceSelf.filename,self.filesize =struct.unpack ('128SL', Self.buf)#according to the 128SL unpacking file information, the same as the client side of the packaging rules                Print 'FileSize is:', Self.filesize,'filename size is:', Len (self.filename)#file name length is 128, greater than the actual file lengthSelf.filenewname = Os.path.join ('e:\\',('New_'+ self.filename). Strip ('\00'))#use Strip () to remove extra empty characters that are attached when packaging                PrintSelf.filenewname,type (self.filenewname) recvd_size= 0#define the file size that was receivedFile = Open (Self.filenewname,'WB')                Print 'Stat Receiving ...'                 while  notRecvd_size = =self.filesize:ifSelf.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 ()

Send side:

#-*-coding:utf-8-*-Importsocket,os,structs=Socket.socket (Socket.af_inet,socket. Sock_stream) S.connect (('192.168.50.74', 12307)) whileTrue:filepath= Raw_input ('Please Enter chars:\r\n')    ifOs.path.isfile (filepath): Fileinfo_size=struct.calcsize ('128SL')#Defining packaging Rules        #define header information, including file name and file sizeFhead = 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: There is a problem sending the file, and after sending it, something will be sent over.FO = open (filepath,'RB')         whileTrue:filedata= Fo.read (1024)            if  notFiledata: Breaks.send (Filedata) fo.close ()Print 'send over ...'        #s.close ()

Python Socket Transfer File