python 3.7 利用socket文件传输
参考:https://www.cnblogs.com/VseYoung/p/socket_1.html
参考 https://blog.csdn.net/a19990412/article/details/80919703
参考:https://www.cnblogs.com/xiaokang01/p/9069048.html
方法一:
接收
fileinfo_size=struct.calcsize('128sl') buf = conn.recv(fileinfo_size) if buf: filename, filesize = struct.unpack('128sl', buf) fn = filename.decode().strip('\00') #Python strip() 方法用于删除字符串头部和尾部指定的字符,默认字符为所有空字符,包括空格、换行(\n)、制表符(\t)等。 new_filename = os.path.join('./', 'new_' + fn) print ('file new name is {0}, filesize is {1}'.format(new_filename, filesize)) recvd_size = 0 # 定义已接收文件的大小 fp = open(new_filename, 'wb') print ('start receiving...') while not recvd_size == filesize: if filesize - recvd_size > 1024: data = conn.recv(1024) recvd_size += len(data) else: data = conn.recv(filesize - recvd_size) recvd_size = filesize fp.write(data) fp.close() print ('end receive...')
发送:
get_screen(in_pathscr) filepath = in_pathscr if os.path.isfile(filepath): fileinfo_size = struct.calcsize('128sl') fhead = struct.pack('128sl', bytes(os.path.basename(filepath).encode()),os.stat(filepath).st_size) #encode很重要 s.send(fhead) print ('client filepath: {0}'.format(filepath)) # fp = open(filepath, 'rb') # rb 以二进制格式打开一个文件用于读写。文件指针将会放在文件的开头。 while 1: data = fp.read(1024) if not data: print ('{0} file send over...'.format(filepath)) break s.send(data)
方法二
客户端
#!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 18-5-21 下午1:59 # @Author : LK # @File : 文件传输_客户端.py # @Software: PyCharm from socket import * import struct import json import os import sys import time from 进度条 import process_bar tcp_client = socket(AF_INET, SOCK_STREAM) ip_port = (('127.0.0.1', 8080)) buffsize = 1024 tcp_client.connect_ex(ip_port) print('等待链接服务端') while True: head_struct = tcp_client.recv(4) # 接收报头的长度, if head_struct: print('已连接服务端,等待接收数据') head_len = struct.unpack('i', head_struct)[0] # 解析出报头的字符串大小 data = tcp_client.recv(head_len) # 接收长度为head_len的报头内容的信息 (包含文件大小,文件名的内容) head_dir = json.loads(data.decode('utf-8')) filesize_b = head_dir['filesize_bytes'] filename = head_dir['filename'] # 接受真的文件内容 recv_len = 0 recv_mesg = b'' old = time.time() f = open(filename, 'wb') while recv_len < filesize_b: percent = recv_len / filesize_b process_bar(percent) if filesize_b - recv_len > buffsize: recv_mesg = tcp_client.recv(buffsize) f.write(recv_mesg) recv_len += len(recv_mesg) else: recv_mesg = tcp_client.recv(filesize_b - recv_len) recv_len += len(recv_mesg) f.write(recv_mesg) print(recv_len, filesize_b) now = time.time() stamp = int(now - old) print('总共用时%ds' % stamp) f.close()
服务端
#!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 18-5-21 下午1:59 # @Author : LK # @File : 文件传输-服务端.py # @Software: PyCharm from socket import * import struct import json import os tcp_server = socket(AF_INET, SOCK_STREAM) ip_port = (('127.0.0.1', 8080)) buffsize = 1024 # 端口的重复利用 tcp_server.setsockopt(SOL_SOCKET, SO_REUSEPORT, 1) tcp_server.bind(ip_port) tcp_server.listen(5) print('还没有人链接') while True: '''链接循环''' conn, addr = tcp_server.accept() print('链接人的信息:', addr) while True: if not conn: print('客户端链接中断') break '''通信循环''' filemesg = input('请输入要传送的文件名加后缀>>>').strip() filesize_bytes = os.path.getsize(filemesg) # 得到文件的大小,字节 filename = 'new' + filemesg dirc = { 'filename': filename, 'filesize_bytes': filesize_bytes, } head_info = json.dumps(dirc) # 将字典转换成字符串 head_info_len = struct.pack('i', len(head_info)) # 将字符串的长度打包 # 先将报头转换成字符串(json.dumps), 再将字符串的长度打包 # 发送报头长度,发送报头内容,最后放真是内容 # 报头内容包括文件名,文件信息,报头 # 接收时:先接收4个字节的报头长度, # 将报头长度解压,得到头部信息的大小,在接收头部信息, 反序列化(json.loads) # 最后接收真实文件 conn.send(head_info_len) # 发送head_info的长度 conn.send(head_info.encode('utf-8')) # 发送真是信息 with open(filemesg, 'rb') as f: data = f.read() conn.sendall(data) print('发送成功')