Example of C Programming Method for Getting IP Address

In this paper, an example is given to describe the method of obtaining IP address by C # programming. Share it for your reference, as follows:

1. Get the client IP

/// <summary>
///  Get client Ip
/// </summary>
/// <returns></returns>
public String GetClientIp()
{
  String clientIP = "";
  if (System.Web.HttpContext.Current != null)
  {
    clientIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
    if (string.IsNullOrEmpty(clientIP) || (clientIP.ToLower() == "unknown"))
    {
      clientIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_REAL_IP"];
      if (string.IsNullOrEmpty(clientIP))
      {
        clientIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
      }
    }
    else
    {
      clientIP = clientIP.Split(',')[0];
    }
  }
  return clientIP;
}

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

/// <summary>
///  The server side obtains the client request IP And client machine name 
/// </summary>
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["X-Real-IP"]) ? requestProperty.Headers["X-Real-IP"] : endpointProperty.Address;
  string clientName = Environment.MachineName;
  Console.WriteLine("ClientIp: " + clientIp + "clientName:" + clientName);
}

PS: Here we recommend several IP related tools for your reference:

IP address attribution online query tool:
http://tools.ofstack.com/aideddesign/ipcha

Online IP address/subnet mask calculation and conversion tool:
http://tools.ofstack.com/aideddesign/ip_net_calc

Online network calculator TCP/IP subnet mask calculation and conversion tool:
http://tools.ofstack.com/aideddesign/ipcalc

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I hope this article is helpful to everyone's C # programming.