Python：UDP回顯服務器asyncore； 發送后套接字關閉

Question

我正在嘗試編寫一個使用asyncore.dispatcher_with_send回顯數據的UDP服務器

我的問題是，當我設置緩沖區並調用self.send（self.buffer）時，似乎要調用handle_close並關閉套接字。

import asyncore, socket,

class Server(asyncore.dispatcher_with_send): 

def __init__(self):
    asyncore.dispatcher.__init__(self)
    self.create_socket(socket.AF_INET, socket.SOCK_DGRAM)
    self.bind(('192.168.0.10', 1452))
    self.buffer = ''
    self.recvData = ''


def handle_close(self):
    self.close()

def handle_read(self):
    print self.recv(8192)
    self.buffer ='a'

def handle_write(self):
    if self.buffer != '':
        sent = self.send(self.buffer)
        self.buffer = self.buffer[sent:]


if __name__ == '__main__':

The_Server = Server()
asyncore.loop()

有任何想法嗎？

謝謝

Answer 1

解決方案是使用sendto並確保sendto地址是顯式的。

import asyncore, socket,

class Server(asyncore.dispatcher_with_send): 

def __init__(self):
    asyncore.dispatcher.__init__(self)
    self.create_socket(socket.AF_INET, socket.SOCK_DGRAM)
    self.bind(('192.168.0.10', 1452))
    self.buffer = ''
    self.recvData = ''


def handle_close(self):
    self.close()

def handle_read(self):
    print self.recv(8192)
    self.buffer ='a'

def handle_write(self):
    if self.buffer != '':
        sent = self.sendto(self.buffer,('192.168.0.9',1452))
        self.buffer = self.buffer[sent:]


if __name__ == '__main__':

The_Server = Server()
asyncore.loop()