python脚本中接受多个netcat连接

Question

我有一个python脚本接收netcat发送的字符串。它的工作，当我有一个客户端发送字符串，但第二个不能连接。

import socket
HOST = 'localhost'   # use '' to expose to all networks
PORT = 12345
def incoming(host, port):
  """Open specified port and return file-like object"""
  sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  # set SOL_SOCKET.SO_REUSEADDR=1 to reuse the socket if
  # needed later without waiting for timeout (after it is
  # closed, for example)
  sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  sock.bind((host, port))
  sock.listen(0)   # do not queue connections
  request, addr = sock.accept()
  return request.makefile('r', 0)
# /-- network ---

for line in incoming(HOST, PORT):
  print line,

我从2个客户端发送字符串到这个脚本，但是当第二个客户端开始发送连接被中断。是否可以允许超过1个同时连接?

将sock.listen()更改为更大的数字没有帮助

Answer 1

您只接受一个连接。此外，我觉得奇怪的是，您希望像现在这样删除文件描述符并读取它。那么，为什么不试试这样做呢:产生传入请求并在超时时抛出StopIteration，并且作为奖励，使用recv代替

import socket
HOST = 'localhost'   # use '' to expose to all networks
PORT = 12345
def incoming(host, port):
    """Open specified port and yield requests"""
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    sock.settimeout(10)
    sock.bind((host, port))
    sock.listen(0)
    try:
        while True:
            request, addr = sock.accept()
            yield request
            request.close()
    except socket.timeout:
        raise StopIteration
    finally:
        sock.close()
for request in incoming(HOST, PORT):
    print request.recv(1024)