Question

c#如何用socket去ping通一个已知IP地址的设备呢？比如该设备IP为192.168.42.150，电脑的IP为192.168.42.1

有没有代码呢？或者有没有懂的可以单独交流啊！！

Answer 1

.net 中已经自带了ping 类，如无必要否则直接使用即可

 //using System.Net.NetworkInformation;
        using (var ping = new Ping())
        {
            var pingReply = ping.Send("192.168.1.1");

            if (pingReply.Status == IPStatus.Success)
            {
                Console.WriteLine("Address: {0}", pingReply.Address.ToString());
                Console.WriteLine("RoundTrip time: {0}", pingReply.RoundtripTime);
                Console.WriteLine("Time to live: {0}", pingReply.Options.Ttl);
                Console.WriteLine("Don't fragment: {0}", pingReply.Options.DontFragment);
                Console.WriteLine("Buffer size: {0}", pingReply.Buffer.Length);
            }
            else
            {
                Console.WriteLine(pingReply.Status);
            }


            // .net 2 下的ping 有bug，需要转为IDisposable进行释放 
            ((IDisposable) ping).Dispose();
        }

如果想用socket 实现， 可以搜索 c# icmp