python之SocketServer传
一、socket传文件实例1：
Sever
#!/usr/bin/python27
#coding:utf-8
import SocketServer
import os
class myserver(SocketServer.BaseRequestHandler):
def handle(self):
#print(self.request,self.client_address,self.server)
base_path = '/root/test/Python27/socket/'
conn = self.request
print('connected...')
while True:
pre_data = conn.recv(1024)
file_name,file_size = pre_data.split('|')
recv_size = 0
file_dir = os.path.join(base_path,file_name)
conn.sendall('请传输正文')
f = open(file_dir,'wb')
print(file_size)
flag = True
while flag:
if int(file_size) > recv_size:
data = conn.recv(1024)
recv_size += len(data)
else:
break
f.write(data)
print('upload successed')
f.close()
print('传输完成')
if __name__ == '__main__':
instance = SocketServer.ThreadingtcpServer(('0.0.0.0',9999),myserver)
instance.serve_forever()
Client
#!/usr/bin/env python
#coding:utf-8
import socket
import sys
import os
ip_port = ('127.0.0.1',9999)
sk = socket.socket()
sk.connect(ip_port)
while True:
name = raw_input('please input the file path:')
file_name = os.path.basename(name)
file_size = os.stat(name).st_size
sk.sendall(file_name + '|' + str(file_size))
data = sk.recv(1024)
print(data)
send_size = 0
f = open(name,'rb')
Flag = True
while Flag:
if send_size + 1024 >file_size:
data = f.read(file_size-send_size)
Flag = False
else:
data = f.read(1024)
send_size+=1024
sk.send(data)
f.close()
sk.close()二、socket传文件实例2：
用一种编程语言实现一个简单的Server/Client程序；该程序的主要功能是利用Client从Server端下载一个文件；在下载之前，需要有一定的用户身份验证机制（说白了就是先输入以下用户名和密码）；Server应该是多线程机制的，即为每个Client请求Server都要有一个线程去处理，而不是所有的Client都是一个Server线程处理。
处理流程：
1、server启动，监听client请求；
2、client启动；
3、server监听到client，发送“Hi”；
4、client收到“Hi”
5、client要求用户输入用户名；
6、用户输入用户名（如yangsq），发送到服务器（形式为“username:yangsq”）；
7、服务器验证是否存在这样一个用户，如果有到step 8，否则转到5；
8、client用求用户输入密码（如123456），发送到服务器（形式为“passWord:123456”）；
9、服务器验证密码是否正确，不正确转到step 8，正确开始传输文件（为了简单，文件预先指定好）；
10、client收到文件，结束后发送“EOF”；同时server端收到“EOF”后结束线程。
服务端：
#!/usr/bin/python27
#coding:utf-8
import SocketServer
import time
import os
class MyTcpServer(SocketServer.BaseRequestHandler):
userInfo = {
'wang':'wang',
'kai':'kai',
'kevin':'kevin' }
def recvfile(self, filename):
name = os.path.basename(filename)
print("starting recv file <%s> ..." % filename)
f = open(name, 'wb')
self.request.send('ready')
while True:
data = self.request.recv(4096)
if data == 'EOF':
print "recv file success!"
break
f.write(data)
f.close()
def sendfile(self, filename):
if os.path.isfile(filename):
print("starting send file <%s> ..." % filename)
self.request.send('ready')
time.sleep(1)
f = open(filename, 'rb')
while True:
data = f.read(4096)
if not data:
break
self.request.send(data)
f.close()
time.sleep(1)
self.request.send('EOF')
print("send file success!")
else:
print("the file <%s> is not exist" % filename)
self.request.send("the file <%s> is not exist" % filename)
def handle(self):
print("get connection from :",self.client_address)
while True:
try:
data = self.request.recv(1024)
print(data)
if not data:
print("break the connection!")
break
elif data == 'Hi, server':
self.request.sendall('hi, client')
elif data.startswith('name'):
self.clientName = data.split(':')[-1]
if self.userInfo.has_key(self.clientName):
self.request.sendall('valid')
else:
self.request.sendall('invalid')
elif data.startswith('pwd'):
self.clientPwd = data.split(':')[-1]
if self.clientPwd == self.userInfo[self.clientName]:
self.request.sendall('valid')
time.sleep(5)
while True:
file_data = self.request.recv(1024)
if file_data == 'exit':
break
action, filename = file_data.split()
if action == "put":
self.recvfile(filename)
elif action == 'get':
self.sendfile(filename)
else:
print("the action <%s> is error !" % action)
else:
self.request.sendall('invalid')
else:
self.request.sendall('请重新输入')
except Exception,e:
print("get error at:",e)
if __name__ == "__main__":
host = '0.0.0.0'
port = 6000
s = SocketServer.ThreadingTCPServer((host,port), MyTcpServer)
s.serve_forever()
客户端：
#!/usr/bin/python27
#coding:utf-8
import socket
import sys,os
import time
def recvfile(filename):
print "server ready, now client recv file~~"
name = os.path.basename(filename)
f = open(name, 'wb')
while True:
data = s.recv(4096)
if data == 'EOF':
print "recv file success!"
break
f.write(data)
f.close()
def sendfile(filename):
print "server ready, now client send file~~"
f = open(filename, 'rb')
while True:
data = f.read(4096)
if not data:
break
s.sendall(data)
f.close()
time.sleep(1)
s.sendall('EOF')
print "send file success!"
def confirm(s, client_command):
s.send(client_command)
confirm_data = s.recv(1024)
print(confirm_data)
if confirm_data == 'ready':
return True
else:
return False
def auth_user():
name = raw_input('Server: input our name:')
s.sendall('name:' + name.strip())
response = s.recv(1024)
if response == 'valid':
res = False
while not res:
res = auth_pass()
return True
else:
return False
def auth_pass():
pwd = raw_input('Server: input our password:')
s.sendall('pwd:' + pwd.strip())
response = s.recv(1024)
if response == 'valid':
return True
else:
return False
############################main##############################
ip = '127.0.0.1'
port = 6000
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((ip,port))
s.sendall('Hi, server')
res = s.recv(1024)
print(res)
while True:
result = auth_user()
if result:
while True:
select = raw_input("Server: Do you want put/get the file from the server?(y/n):")
if select == 'y':
client_command = raw_input("method:put/get filename:")
if not client_command:
continue
elif client_command == 'exit':
s.sendall('exit')
sys.exit('退出')
action, filename = client_command.split()
if action == 'put':
if os.path.isfile(filename):
if confirm(s, client_command):
sendfile(filename)
else:
print("the file <%s> is not exist" % filename)
elif action == 'get':
if confirm(s, client_command):
recvfile(filename)
else:
print("command error!")
else:
s.sendall('exit')
sys.exit('传输完成，正常退出')
except socket.error,e:
print "get error as",e
finally:
s.close()
python的网络编程确实简单，因为它提供了各种功能的已经写好的类，直接继承就Ok了。
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