在Python中监听UDP数据包出错 - socket.error: [Errno 24] 打开文件过多

Question

我刚开始学Python，最近遇到一个问题卡了我很久。

简单来说，我正在制作一个模块，这个模块是用在游戏里的（使用的是pygame这个模块），不过我不想通过pygame模块直接获取键盘按下的键，而是想通过网络，用UDP的方式来接收这些按键。

我创建了一个模块，它会在一个单独的线程上监听指定的UDP端口，并把按下的键返回给游戏，随时可以调用。

我写的代码运行了一段时间，但速度很慢，过一会儿就会出现以下错误信息：

Traceback (most recent call last):
  File "game.py", line 164, in <module>
  File "/usr/lib/python2.7/dist-packages/pygame/sprite.py", line 399, in update
  File "/home/globe/Desktop/Asteroids/sprites.py", line 41, in update
  File "/home/globe/Desktop/Asteroids/networkControlLatest.py", line 18, in getKeyPressed
  File "/home/globe/Desktop/Asteroids/networkControlLatest.py", line 8, in __init__
  File "/usr/lib/python2.7/socket.py", line 187, in __init__
socket.error: [Errno 24] Too many open files
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 66, in apport_excepthook
ImportError: No module named fileutils

Original exception was:
Traceback (most recent call last):
  File "game.py", line 164, in <module>
  File "/usr/lib/python2.7/dist-packages/pygame/sprite.py", line 399, in update
  File "/home/globe/Desktop/Asteroids/sprites.py", line 41, in update
  File "/home/globe/Desktop/Asteroids/networkControlLatest.py", line 18, in getKeyPressed
  File "/home/globe/Desktop/Asteroids/networkControlLatest.py", line 8, in __init__
  File "/usr/lib/python2.7/socket.py", line 187, in __init__
socket.error: [Errno 24] Too many open files

networkControlLatest.py文件的内容如下：

*****from socket import *
import threading
#Class to get key pressed UDP packet on a separate thread
class networkReceive(threading.Thread):
     def __init__(self,address):
         threading.Thread.__init__(self)
     self.address = address
     self.server_socket = socket(AF_INET, SOCK_DGRAM)
         self.server_socket.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
     self.server_socket.bind(self.address)
         self.recv_data = ''

     def run(self):
         self.recv_data, addr = self.server_socket.recvfrom(2048)

def getKeyPressed():
    address = ('129.11.148.65', 6005)
    thread = networkReceive(address)
    thread.start()
    thread.join(0.01)
        recv_data = thread.recv_data
    thread.server_socket.close()
    print recv_data
    return recv_data*****

在game.py文件中调用这个模块的一个例子如下：

keys = networkControlLatest.getKeyPressed()
        if keys == 'A':
            laser = sprites.Bullet(screen,Ship.angle,Ship.rect.center)
            bulletgroup.add (pygame.sprite.Group(laser))
            delay = 15

游戏使用键盘时运行得很好，所以我知道问题出在网络部分，但我就是搞不清楚到底是什么问题！任何帮助都非常感谢，我已经盯着这段代码太久了……！

错误处理多线程 pygame 网络编程游戏开发键盘输入 udp socket.error

在Python中监听UDP数据包出错 - socket.error: [Errno 24] 打开文件过多

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