发布：2022/9/26 15:56:29作者：管理员 来源：本站 浏览次数：730
前言
在 Windows Form Application 里对于取得 IP Address 有内网、外网两种 IP Address ，如果只需要取得内网 IP Address ，可以透过使用 IPHostEntry 类别取得，而外网的话就必须要发送一个 Request 到一个可以取得 IP Address 的网站后再分析 Response 的内容，这个网站可以自己做或者使用现成的，如 http://www.whatismyip.com.tw/ 。
另外，在使用 Socket 通讯的情况下，也有可能有需要知道前来连结的客户端的 IP Address 是什么，这时就可以使用 Socket.RemoteEndPoint 属性来取得远程 IP 地址和通讯端口编号，以下就列出范例代码看看该如何使用。
范例程序代码
/// <summary>
/// 取得外网 IP Address
/// </summary>
/// <returns></returns>
private string GetExtranetIPAddress()
{
HttpWebRequest request = HttpWebRequest.Create("http://www.whatismyip.com.tw") as HttpWebRequest;
request.Method = "GET";
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent = "Mozilla/5.0";
string ip = string.Empty;
WebResponse response = request.GetResponse();
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
string result = reader.ReadToEnd();
string pattern = @"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}";
ip = Regex.Match(result, pattern).ToString();
}
return ip; // result: 210.125.21.xxx
}
/// <summary>
/// 取得本机 IP Address
/// </summary>
/// <returns></returns>
private List<string> GetHostIPAddress()
{
List<string> lstIPAddress = new List<string>();
IPHostEntry IpEntry = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ipa in IpEntry.AddressList)
{
if (ipa.AddressFamily == AddressFamily.InterNetwork)
lstIPAddress.Add(ipa.ToString());
}
return lstIPAddress; // result: 192.168.1.17 ......
}
private static string GetIP()
{
string tempip = "";
try
{
WebRequest wr = WebRequest.Create("http://www.ip138.com/ips138.asp");
Stream s = wr.GetResponse().GetResponseStream();
StreamReader sr = new StreamReader(s, Encoding.Default);
string all = sr.ReadToEnd(); //读取网站的数据
int start = all.IndexOf("您的IP地址是：[") + 9;
int end = all.IndexOf("]", start);
tempip = all.Substring(start, end - start);
sr.Close();
s.Close();
}
catch
{
}
return tempip;
}
/// <summary>
/// 执行服务器监听
/// </summary>
public static void RunServer()
{
// 建立X509凭证
ServerCertificate = new X509Certificate(Certificate, "ssl");
// 监听任何IP Address来的讯息
listener = new TcpListener(System.Net.IPAddress.Any, 17170);
// 开启监听
listener.Start();
while (IsRun)
{
TcpClient client = listener.AcceptTcpClient();
ProcessClient(client);
}
}
/// <summary>
/// 接收客户端讯息处理并回复
/// </summary>
/// <param name="pClient"></param>
private static void ProcessClient(TcpClient pClient)
{
SslStream sslStream = new SslStream(pClient.GetStream(), true);
// 取得连接者 IP 与 Port
IPEndPoint point = pClient.Client.RemoteEndPoint as IPEndPoint;
string ip = point.Address.ToString(); // result: 127.0.0.1
string port = point.Port.ToString(); // result: 55236
// do something...
}
复制代码
string tempIP =string.Empty;
if (System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()).AddressList.Length >1)
tempIP = System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()).AddressList[1].ToString();
© Copyright 2014 - 2024 柏港建站平台 ejk5.com. 渝ICP备16000791号-4