ASP.NET中指定自定义HTTP响应标头

新建一个类HideServerHeaderHelper，继承 IHttpModule，然后重写 OnPreSendRequestHeaders，Dispose，Init方法，如下代码所示

using System;
using System.Collections.Generic;
using System.Web;

namespace MvcApp.Filters
{
public class HideServerHeaderHelper : IHttpModule
{
/// <summary>
/// List of Headers to remove
/// </summary>
private readonly List<string> _headersToCloak;

/// <summary>
/// Initializes a new instance of the <see cref="HideServerHeaderModule"/> class.
/// </summary>
public HideServerHeaderHelper()
{
_headersToCloak = new List<string>
{
"Server",
"X-AspNet-Version",
"X-AspNetMvc-Version",
"X-Powered-By"
};
}

private void OnPreSendRequestHeaders(object sender, EventArgs e)
{
//设置Server的值

_headersToCloak.ForEach(h => HttpContext.Current.Response.Headers.Remove(h));
HttpContext.Current.Response.Headers.Set("Server", "nginx");
HttpContext.Current.Response.Headers.Set("Powered-By", "东讯科技有限公司");
}

public void Dispose()
{
_headersToCloak.Clear();
}

public void Init(HttpApplication context)
{
context.PreSendRequestHeaders += OnPreSendRequestHeaders;
}
}
}

在web.config添加以下模块

<system.webServer>
<modules runAllManagedModulesForAllRequests="true">
<add name="HideServerHeaderModule" type="MvcApp.Filters.HideServerHeaderModule"/>
</modules>

<httpProtocol>
<customHeaders>
<remove name="Server"/>
<remove name="X-AspNet-Version"/>
<remove name="X-AspNetMvc-Version"/>
<remove name="X-Powered-By"/>
</customHeaders>
</httpProtocol>
</system.webServer>