python - 如何在 Python 中使用同一个端口两次

Question

即使使用 REUSEADDR 选项，我仍然无法重用同一组端口。它给了我一个 98，“地址已在使用”错误。

有没有办法在第二组套接字之前杀死第一组套接字，或者解决这个问题？

在下面的代码中，我做了两次完全相同的事情。

servers = []
port_list = [i for i in range(40007, 40107)]
for port in port_list:
    ds = ('', port)
    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server.bind(ds)
    server.listen(1)
    servers.append(server)

found,_,_ = select.select(servers, [], [])
found = found[0]
conn, addr = found.accept()
print 'Connected by', addr
data = conn.recv(1024)
print "received", data
conn.sendall("message!!")

conn.close()



#time.sleep(10) # even this doesn't work


port_list = [i for i in range(40007, 40107)]
for port in port_list:
    ds = ('', port)
    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server.bind(ds)
    server.listen(1)
    servers.append(server)

found,_,_ = select.select(servers, [], [])
found = found[0]
conn, addr = found.accept()
print 'Connected by', addr

data = conn.recv(1024)
print "received", data
conn.sendall("message!!")

Answer 1

完成后您需要关闭服务器套接字。 SO_REUSEADDR 不允许您使用打开 套接字的地址，只有最近关闭但仍徘徊在 TIME_WAIT 状态的套接字.