Question

我正在创建一个可以侦听多个端口（在portslist中定义）的python脚本，当有人连接到这些端口时，就会出现一个＆＃34;你好＆＃34;消息将发送给他们。目前，下面的代码为端口列表中的所有端口创建套接字，但仅在最后一个端口上向通信发送消息。

由于

servers = []
for port in portlist:
    datasocket = ("0.0.0.0", port)

    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server.bind(datasocket)
    server.listen(5)

    servers.append(server)


while True:
ready_server = select.select(servers, [], [])


for s in ready_server:
        connection, address = server.accept()
        print str(address) + " has connected!\n"
        msg ="hello\n"
        connection.send(msg)
        connection.close()

Answer 1

当select.select返回时，ready_server将是这样的列表列表：

[[<sockets ready to read from>], [], []]

所以for s in ready_server会迭代这些列表，而不是套接字。

此外，该循环中的server.accept()并不引用任何循环变量，而是引用前一循环中的server。

试试这个：

servers = []
for port in portlist:
    datasocket = ("0.0.0.0", port)

    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server.bind(datasocket)
    server.listen(5)

    servers.append(server)


while True:
    # unpack the returned list
    ready_server, _, _ = select.select(servers, [], [])


    for s in ready_server:
        # use s.accept instead of server.accept
        connection, address = s.accept()
        print str(address) + " has connected!\n"
        msg ="hello\n"
        connection.send(msg)
        connection.close()

多个网络套接字python

1 个答案: