windows phone 7上获取本地IP的方法
using System;
using System.Net;
using System.Net.Sockets;
using System.Diagnostics;
using System.Linq;
using System.Text;
namespace FindMyIP
{
public class MyIPAddress
{
Action FoundCallback;
UdpAnySourceMulticastClient MulticastSocket;
const int PortNumber = 50000; // pick a number, any number
string MulticastMessage = "FIND-MY-IP-PLEASE" + new Random().Next().ToString();
public void Find(Action callback)
{
FoundCallback = callback;
MulticastSocket = new
UdpAnySourceMulticastClient(IPAddress.Parse("239.255.255.250"), PortNumber);
MulticastSocket.BeginJoinGroup((result) =>
{
try
{
MulticastSocket.EndJoinGroup(result);
GroupJoined(result);
}
catch (Exception ex)
{
Debug.WriteLine("EndjoinGroup exception {0}", ex.Message);
// This can happen eg when wifi is off
FoundCallback(null);
}
},
null);
}
void callback_send(IAsyncResult result)
{
}
byte[] MulticastData;
bool keepsearching;
void GroupJoined(IAsyncResult result)
{
MulticastData = Encoding.UTF8.GetBytes(MulticastMessage);
keepsearching = true;
MulticastSocket.BeginSendToGroup(MulticastData, 0, MulticastData.Length, callback_send, null);
while (keepsearching)
{
try
{
byte[] buffer = new byte[MulticastData.Length];
MulticastSocket.BeginReceiveFromGroup(buffer, 0, buffer.Length, DoneReceiveFromGroup, buffer);
}
catch (Exception ex)
{
Debug.WriteLine("Stopped Group read due to " + ex.Message);
keepsearching = false;
}
}
}
void DoneReceiveFromGroup(IAsyncResult result)
{
IPEndPoint where;
int responselength = MulticastSocket.EndReceiveFromGroup(result, out where);
byte[] buffer = result.AsyncState as byte[];
if (responselength == MulticastData.Length && buffer.SequenceEqual(MulticastData))
{
Debug.WriteLine("FOUND myself at " + where.Address.ToString());
keepsearching = false;
FoundCallback(where.Address);
}
}
}
}
Here is a sample button handler to put in a trivial Silverlight test app:
private void button1_Click(object sender, RoutedEventArgs e)
{
MyIPAddress finder = new MyIPAddress();
finder.Find((address) =>
{
Dispatcher.BeginInvoke(() =>
{
button1.Content = address == null ? "Unknown" : address.ToString();
});
});
}
本文档为【windows phone 7上获取本地IP的方法】，请使用软件OFFICE或WPS软件打开。作品中的文字与图均可以修改和编辑，
图片更改请在作品中右键图片并更换，文字修改请直接点击文字进行修改，也可以新增和删除文档中的内容。
该文档来自用户分享，如有侵权行为请发邮件ishare@vip.sina.com联系网站客服，我们会及时删除。
[版权声明] 本站所有资料为用户分享产生，若发现您的权利被侵害，请联系客服邮件isharekefu@iask.cn，我们尽快处理。
本作品所展示的图片、画像、字体、音乐的版权可能需版权方额外授权，请谨慎使用。
网站提供的党政主题相关内容(国旗、国徽、党徽..)目的在于配合国家政策宣传，仅限个人学习分享使用，禁止用于任何广告和商用目的。
浙公网安备 33021202002483