我试图在Python中进行客户端服务器练习并且它必须是并发的,所以基本上我有一台主服务器和另外3台下载服务器。这些下载服务器可以很好地连接到主服务器,但每当我想与它们进行交互时,我就无法做到。我尝试循环遍历线程并执行一个简单的函数,该函数从主服务器向每个下载的消息发送不同的消息。问题是它只将消息发送到它循环的最后一个消息,并且它甚至不发送正确的消息,它将要传递给第一个服务器的消息发送到最后一个服务器。
所以这是我的代码:
import socket
from threading import Thread
from SocketServer import ThreadingMixIn
import logging
# Multithreaded Python server : TCP Server Socket Thread Pool
class ClientThread(Thread):
def __init__(self,ip,port):
Thread.__init__(self)
self.ip = ip
self.port = port
print "[+] New server socket thread started for " + ip + ":" + str(port)
def run(self):
while True :
data = conn.recv(2048)
print "Server received data:", data
#MESSAGE = raw_input("Multithreaded Python server : Enter Response from Server/Enter exit:")
if not data:
break
if data == 'exit':
break
#conn.send(MESSAGE) # echo
class DServerThread(Thread):
def __init__(self,ip,port):
Thread.__init__(self)
self.ip = ip
self.port = port
def run(self):
while True :
data = conn.recv(2048)
print "Server received data:", data
if not data:
break
if data == 'exit':
break
#conn.send(MESSAGE) # echo
def sendmsg(self,str):
conn.send(str)
# Multithreaded Python server : TCP Server Socket Program Stub
TCP_IP = '0.0.0.0'
TCP_PORT = 2004
sport = 5000
BUFFER_SIZE = 20
dServer=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
dServer.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
dServer.bind((TCP_IP, sport))
tcpServer = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcpServer.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
tcpServer.bind((TCP_IP, TCP_PORT))
cthreads = [] #client threads
sthreads = [] #download server threads
controlthreads = [] #Threads to manage the background processes
for i in range(1, 4):
dServer.listen(3)
(conn, (ip,port)) = dServer.accept()
newthread = DServerThread(ip,port)
newthread.start()
sthreads.append(newthread)
for t in sthreads:
print t.getName()
t.sendmsg(t.getName())
我遇到的问题是最后一回合,但我不明白为什么。
TL; DR:最后一个循环没有按预期工作,它似乎只在最后一次迭代时执行该函数并发送用于第一个线程的消息。