python：socket传输大文件示例_Python

python：socket传输大文件示例

2020-09-18 10:29夏夜晚风 Python

本篇文章主要介绍了python：socket传输大文件示例，具有一定的参考价值，有兴趣的可以了解一下

文件可以传输，但是对比传输前后的文件：socket_test.txt，末尾有一些不一致服务端代码：

									#!/usr/bin/python

									# -*- coding: utf-8 -*-

									import sys

									reload(sys)

									sys.setdefaultencoding("utf-8")

									import time

									'''

									等待连接

									等待发送文件

									读取数据

									写入文件并且保存

									等待连接

									'''

									import socket

									import threading

									import time

									import struct

									def function(newsock, address):

									  FILEINFO_SIZE = struct.calcsize('128sI')

									  '''定义文件信息（包含文件名和文件大小）大小。128s代表128个char[]（文件名），I代表一个integer or long（文件大小）'''

									  while 1:

									    try:

									      fhead = newsock.recv(FILEINFO_SIZE)

									      filename, filesize = struct.unpack('128sI', fhead)

									      '''把接收到的数据库进行解包，按照打包规则128sI'''

									      print "address is: ", address

									      print filename, len(filename), type(filename)

									      print filesize

									      #filename = 'new_'+filename.strip('\00') # 命名新文件new_传送的文件

									      filename = filename.strip('\00')

									      fp = open(filename, 'wb') # 新建文件，并且准备写入

									      restsize = filesize

									      print "recving..."

									      while 1:

									        if restsize > 102400: # 如果剩余数据包大于1024，就去1024的数据包

									          filedata = newsock.recv(10240)

									        else:

									          filedata = newsock.recv(restsize)

									          fp.write(filedata)

									          #break

									        if not filedata:

									          break

									        fp.write(filedata)

									        restsize = restsize - len(filedata) # 计算剩余数据包大小

									        if restsize <= 0:

									          break

									      fp.close()

									      print "recv succeeded !!File named:", filename

									    except Exception, e:

									      print unicode(e).encode('gbk')

									      print "the socket partner maybe closed"

									      newsock.close()

									      break

									sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # 创建tcp连接

									sock.bind(('10.240.146.82', 8887)) # 定于端口和ip

									sock.listen(5) # 监听

									while True:

									  newsock, address = sock.accept()

									  print "accept another connection"

									  tmpThread = threading.Thread(target=function, args=(newsock, address)) # 如果接收到文件，创建线程

									  tmpThread.start() # 执行线程

									print 'end'

客户端代码：

									#!/usr/bin/python

									# -*- coding: utf-8 -*-

									import sys

									reload(sys)

									sys.setdefaultencoding("utf-8")

									'''

									输入文件名，并且上传

									'''

									import socket

									import time

									import struct

									import os

									f = open('socket_test.txt', 'wb')

									for i in range(1000000):

									  f.write('for socket test, the line number is : ' + str(i) + '\n')

									f.close()

									sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

									sock.settimeout(50)

									e = 0

									try:

									  sock.connect(('10.240.146.82', 8887))

									  print 'connect...'

									except socket.timeout, e:

									  print 'timeout', e

									except socket.error, e:

									  print 'error', e

									except e:

									  print 'any', e

									if not e:

									  #while (1):

									    #filename = raw_input('input your filename------->') # 输入文件名

									  filename = 'socket_test.txt'

									  FILEINFO_SIZE = struct.calcsize('128sI') # 编码格式大小

									  fhead = struct.pack('128sI', filename, os.stat(filename).st_size) # 按照规则进行打包

									  sock.send(fhead) # 发送文件基本信息数据

									  fp = open(filename, 'rb')

									  fp2 = open('local_test.txt','wb')

									  i = 0

									  while 1: # 发送文件

									    filedata = fp.read(10240)

									    if not filedata:

									      break

									    sock.sendall(filedata)

									    fp2.write(filedata)

									    print i

									    i = i + 1

									  print "sending over..."

									  fp.close()

									  fp2.close()