90 lines
2.9 KiB
C#
90 lines
2.9 KiB
C#
using System;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Http.Extensions;
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using NewLife.Log;
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namespace NewLife.Web;
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/// <summary>网页工具类</summary>
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static class WebHelper
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{
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#region Http请求
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/// <summary>获取原始请求Url，支持反向代理</summary>
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/// <param name="request"></param>
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/// <returns></returns>
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public static UriInfo GetRawUrl(this HttpRequest request)
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{
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UriInfo? uri = null;
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// 取请求头
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var url = request.GetEncodedUrl();
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try
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{
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uri = new UriInfo(url);
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}
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catch (Exception ex)
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{
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DefaultSpan.Current?.AppendTag($"GetRawUrl：{url} 失败：{ex.Message}");
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uri = new UriInfo("")
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{
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Scheme = request.Scheme,
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Host = request.Host.Host,
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Port = request.Host.Port ?? (request.Scheme == "https" ? 443 : 80),
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AbsolutePath = request.PathBase + request.Path,
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Query = request.QueryString.ToUriComponent()
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};
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}
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return GetRawUrl(uri, k => request.Headers[k]);
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}
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private static UriInfo GetRawUrl(UriInfo uri, Func<String, String?> headers)
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{
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var str = headers("HTTP_X_REQUEST_URI");
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if (str.IsNullOrEmpty()) str = headers("X-Request-Uri");
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if (!str.IsNullOrEmpty()) uri = new UriInfo(str);
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// 阿里云CDN默认支持 X-Client-Scheme: https
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var scheme = headers("HTTP_X_CLIENT_SCHEME");
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if (scheme.IsNullOrEmpty()) scheme = headers("X-Client-Scheme");
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// nginx
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if (scheme.IsNullOrEmpty()) scheme = headers("HTTP_X_FORWARDED_PROTO");
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if (scheme.IsNullOrEmpty()) scheme = headers("X-Forwarded-Proto");
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//if (!scheme.IsNullOrEmpty()) str = scheme + "://" + uri.ToString().Substring("://");
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if (!scheme.IsNullOrEmpty()) uri.Scheme = scheme;
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//if (!str.IsNullOrEmpty()) uri = new Uri(uri, str);
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return uri;
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}
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/// <summary>获取用户主机</summary>
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/// <param name="context"></param>
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/// <returns></returns>
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public static String? GetUserHost(this HttpContext context)
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{
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var request = context.Request;
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var str = "";
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if (str.IsNullOrEmpty()) str = request.Headers["HTTP_X_FORWARDED_FOR"];
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if (str.IsNullOrEmpty()) str = request.Headers["X-Real-IP"];
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if (str.IsNullOrEmpty()) str = request.Headers["X-Forwarded-For"];
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if (str.IsNullOrEmpty()) str = request.Headers["REMOTE_ADDR"];
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//if (str.IsNullOrEmpty()) str = request.Headers["Host"];
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if (str.IsNullOrEmpty())
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{
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var addr = context.Connection?.RemoteIpAddress;
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if (addr != null)
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{
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if (addr.IsIPv4MappedToIPv6) addr = addr.MapToIPv4();
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str = addr + "";
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}
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}
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return str;
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}
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#endregion
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} |