Detailed introduction to the method of obtaining IP address through C# programming-C#.Net Tutorial-php.cn

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Detailed introduction to the method of obtaining IP address through C# programming

Mar 25, 2017 am 11:54 AM

c# IP address Obtain

This article mainly introduces C ProgrammingGet IP The address method, combined with examples, analyzes the specific implementation techniques of C# to obtain the client IP address. Friends who need it can refer to the following

The example in this article describes the method of obtaining the IP address through C# programming and is shared with everyone for your reference. , the details are as follows:

1. Get the client IP

/// &lt;summary&gt;
/// 获取客户端Ip
/// &lt;/summary&gt;
/// &lt;returns&gt;&lt;/returns&gt;
public String GetClientIp()
{
  String clientIP = &quot;&quot;;
  if (System.Web.HttpContext.Current != null)
  {
    clientIP = System.Web.HttpContext.Current.Request.ServerVariables[&quot;HTTP_X_FORWARDED_FOR&quot;];
    if (string.IsNullOrEmpty(clientIP) || (clientIP.ToLower() == &quot;unknown&quot;))
    {
      clientIP = System.Web.HttpContext.Current.Request.ServerVariables[&quot;HTTP_X_REAL_IP&quot;];
      if (string.IsNullOrEmpty(clientIP))
      {
        clientIP = System.Web.HttpContext.Current.Request.ServerVariables[&quot;REMOTE_ADDR&quot;];
      }
    }
    else
    {
      clientIP = clientIP.Split(&#39;,&#39;)[0];
    }
  }
  return clientIP;
}

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2. The server side gets the client request IP and client machine name

/// &lt;summary&gt;
/// 服务器端获取客户端请求IP和客户端机器名称
/// &lt;/summary&gt;
public static void GetClientInfo()
{
  OperationContext context = OperationContext.Current;
  MessageProperties messageProperties = context.IncomingMessageProperties;
  RemoteEndpointMessageProperty endpointProperty = messageProperties[RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
  HttpRequestMessageProperty requestProperty = messageProperties[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty;
  string clientIp = !string.IsNullOrEmpty(requestProperty.Headers[&quot;X-Real-IP&quot;]) ? requestProperty.Headers[&quot;X-Real-IP&quot;] : endpointProperty.Address;
  string clientName = Environment.MachineName;
  Console.WriteLine(&quot;ClientIp: &quot; + clientIp + &quot;clientName:&quot; + clientName);
}

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