C/S架构的简单文件传输系统的实现

源码链接：
https://github.com/GYgavin/python/blob/master/client.py
https://github.com/GYgavin/python/blob/master/server.py

设计思路：

• 确定协议
• 语言选择
• 设计函数
• 构建连接
• 发送文件

---

选择使用python的原因：

    所需实现的功能比较简单，灵活性不需要太高，这样的程序用c语言编写起来太过于繁琐，用python代码量少，容易理解和修改。

实现思路:

1. Server端实现思路

**备注：此处判断的结果yes和no分别代表判断得到客户端的get和put指令

2. Client端实现思路

备注：此处判断yes为put，no为get

---

实现代码:

服务端代码

#!/usr/bin/env pythonfrom socket import *import timeHOST = '127.0.0.1'PORT = 9036BUFSIZ = 1024000ADDR = (HOST,PORT)def recv_file(filename):    print 'Starting receive file...'    filename = open(filename,'wb')    tcpCliSock.send('File will be received!')    while True:            data = tcpCliSock.recv(4096000)            if data == 'EOF':                    print 'File received successfully!'                    break            filename.write(data)    filename.close()def send_file(filename):    print 'Starting send file...'    tcpCliSock.send('File will be sent...')    filename = open(filename,'rb')    while True:            data = filename.read(4096000)            if not data:                    break            tcpCliSock.send(data)    filename.close()    time.sleep(1)    tcpCliSock.send('EOF')    print 'send file success!'tcpSerSock = socket(AF_INET,SOCK_STREAM)tcpSerSock.bind(ADDR)tcpSerSock.listen(5)while True:    print('waiting for connection...')    tcpCliSock,addr = tcpSerSock.accept()    print('Tcpserver have connected with :',addr)    while True:        command = tcpCliSock.recv(4096000)        act,filename = command.split()        if act == 'put':            print 'receiving file from client,please waiting...'            recv_file(filename)        elif act == 'get':            print 'sending file to client,please waiting...'            send_file(filename)        else:            print 'Error:no command,please input put or get + filename'            continue

客户端代码

#!/usr/bin/env pythonimport socketimport timeHOST = '127.0.0.1'PORT = 9036BUFSIZ = 1024000ADDR = (HOST,PORT)tcpCliSock =socket.socket(socket.AF_INET,socket.SOCK_STREAM)def recv_file(filename):    print 'transfer from:',ADDR    filename = open(filename,'wb')    while True:        data = tcpCliSock.recv(4096)        if data == 'EOF':            print 'File received successfully!'            break        filename.write(data)    filename.closedef send_file(filename):    print 'transfer from:',ADDR    filename = open(filename,'rb')    while True:      data = tcpCliSock.recv(4096000)        if data == 'EOF':            print 'File received successfully!'            break        filename.write(data)    filename.closedef send_file(filename):    filename = open(filename,'rb')    while True:        data = filename.read(4096000)        if not data:             break        tcpCliSock.send(data)    filename.close()    time.sleep(1)    tcpCliSock.send('EOF')    print 'send file success!'try:    tcpCliSock.connect(ADDR)    while True:        client_command = raw_input('File transfer >>')        if not client_command:            continue        tcpCliSock.send(client_command)        act,filename = client_command.split()        if act == 'put':                print 'File sending...'                send_file(filename)        elif act == 'get':                print 'File receiving...'                recv_file(filename)        else:            print 'command error!'except socket.error,e:    print 'ERROR',efinally:    tcpCliSock.close()

---

运行结果：

---

小编能力有限，水平不高，感谢大家支持，关注！