Question

我正在尝试连接/绑定到特定的网络接口卡（NIC）或无线网络接口。例如，当我创建套接字时，我想使用网络名称（例如'wlan0'或'eth0'）进行连接，而不是使用IP地址。在JAVA中，我可以使用以下代码轻松完成此操作：

//Initializing command socket

//String networkCard = "wlan0"; //or could be "eth0", etc.

NetworkInterface nif = NetworkInterface.getByName(networkCard);

Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();

// IP address of robot connected to NIC       
SocketAddress sockaddr = new InetSocketAddress("192.168.1.100", 80);

sock = new Socket();

// bind to the specific NIC card which is connected to a specific robot

sock.bind(new InetSocketAddress(nifAddresses.nextElement(), 0));

sock.connect(sockaddr,10000);

我想把它翻译成Python，但我很难过。有关如何做到这一点的任何建议吗？

我使用的是sockopt和AF_CAN，但没有任何效果。

非常感谢!!!

Answer 1

实际上答案很简单。它类似于 Idx 在上一个答案中所做的：

def findConnectedRobot():

'''
Finds which robots are connected to the computer and returns the
addresses of the NIC they are connected to
'''
robot_address = []  # stores NIC address
import netifaces
# get the list of availble NIC's
for card in netifaces.interfaces():
    try:
        # get all NIC addresses
        temp = netifaces.ifaddresses(\
                card)[netifaces.AF_INET][0]['addr']
        temp2 = temp.split('.')
        # see if address matches common address given to NIC when
        # NIC is connected to a robot
        if temp2[0] == '192' and int(temp2[3]) < 30:
            print('appending address: ' + temp)
            robot_address.append(temp)
    except BaseException:
        pass
return robot_address

在我获得“机器人地址”之后，我就可以像普通插座一样绑定/连接它们。

感谢您的帮助！

Answer 2

您需要libnl及其python绑定：

#!/usr/bin/env python

import netlink.core as netlink
import netlink.route.link as link
import netlink.route.address as Address

sock = netlink.Socket()
sock.connect(netlink.NETLINK_ROUTE)

cache = link.LinkCache()
cache.refill(sock)
intf = cache['wlan0']

addr_cache = Address.AddressCache()
addr_cache.refill()

for addr in addr_cache:
    if addr.ifindex == intf.ifindex:
        print addr

使用python绑定/连接到网络接口卡

2 个答案: