C# 获取IP地址、主机信息(Host)、浏览器信息

亦凉 2022-05-20 06:49 291阅读 0赞

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Net;
    using System.Net.Sockets;
    using System.Web;
    
    
    
    
    namespace NetHelper
    {
        public class Net
        {
            #region Ip(获取Ip)
            /// <summary>
            /// 获取Ip
            /// </summary>
            public static string Ip
            {
                get
                {
                    var result = string.Empty;
                    if (HttpContext.Current != null)
                        result = GetWebClientIp();
                    if (string.IsNullOrWhiteSpace(result))
                        result = GetLanIp();
                    return result;
                }
            }
            /// <summary>
            /// 获取Web客户端的Ip
            /// </summary>
            /// <returns></returns>
            private static string GetWebClientIp()
            {
                var ip = GetWebRemoteIp();
                foreach (var hostAddress in Dns.GetHostAddresses(ip))
                {
                    if (hostAddress.AddressFamily == AddressFamily.InterNetwork)
                        return hostAddress.ToString();
                }
                return string.Empty;
            }
            /// <summary>
            /// 获取Web远程Ip
            /// </summary>
            /// <returns></returns>
            private static string GetWebRemoteIp()
            {
                return HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] ?? HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
            }
            /// <summary>
            /// 获取局域网IP
            /// </summary>
            /// <returns></returns>
            private static string GetLanIp()
            {
                string ip = string.Empty;
                foreach (var hostAddress in Dns.GetHostAddresses(Dns.GetHostName()))
                {
                    if (hostAddress.AddressFamily == AddressFamily.InterNetwork)
                        //return hostAddress.ToString();
                        ip = ip + ";" + hostAddress.ToString();
                }
                if (!string.IsNullOrEmpty(ip) && ip.Contains(";"))
                {
                    ip = ip.Substring(1);
                }
                return ip;
            }
            #endregion
    
    
            #region Host(获取主机名)
            /// <summary>
            /// 获取主机名
            /// </summary>
            public static string Host
            {
                get
                {
                    return HttpContext.Current == null ? Dns.GetHostName() : GetWebClientHostName();
                }
            }
            /// <summary>
            /// 获取Web客户端主机名
            /// </summary>
            /// <returns></returns>
            private static string GetWebClientHostName()
            {
                if (!HttpContext.Current.Request.IsLocal)
                    return string.Empty;
                var ip = GetWebRemoteIp();
                var result = Dns.GetHostEntry(IPAddress.Parse(ip)).HostName;
                if (result == "localhost.localdomain")
                    result = Dns.GetHostName();
                return result;
            }
    
    
            #endregion
    
    
            #region Browser(获取浏览器信息)
            /// <summary>
            /// 获取浏览器信息
            /// </summary>
            public static string Browser
            {
                get
                {
                    if (HttpContext.Current == null)
                        return string.Empty;
                    var browser = HttpContext.Current.Request.Browser;
                    return string.Format("{0} {1}", browser.Browser, browser.Version);
                }
            }
            #endregion
        }
    }