为什么在ASP.Net中向StatusDescription添加换行符会关闭连接?
发布时间:2020-12-16 04:38:09 所属栏目:asp.Net 来源:网络整理
导读:当我使用来自ASP.Net MVC 3.0的HttpStatusCodeResult返回带有换行符的StatusDescription时,强制关闭与我的客户端的连接.应用程序托管在IIS 7.0中. 示例控制器: public class FooController : Controller { public ActionResult MyAction() { return new Htt
当我使用来自ASP.Net MVC 3.0的HttpStatusCodeResult返回带有换行符的StatusDescription时,强制关闭与我的客户端的连接.应用程序托管在IIS 7.0中.
示例控制器: public class FooController : Controller { public ActionResult MyAction() { return new HttpStatusCodeResult((int)HttpStatusCode.BadRequest,"Foo n Bar"); } } 示例客户端: using (WebClient client = new WebClient()) { client.DownloadString("http://localhost/app/Foo/MyAction"); } 抛出异常: System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host 使用curl时的行为是一致的(curl 7.25.0(i386-pc-win32)libcurl / 7.25.0 zlib / 1.2.6)
卷曲:(56)Recv失败:重置连接 编辑 我最终使用这个自定义ActionResult来获得所需的结果. public class BadRequestResult : ActionResult { private const int BadRequestCode = (int)HttpStatusCode.BadRequest; private int count = 0; public BadRequestResult(string errors) : this(errors,"") { } public BadRequestResult(string format,params object[] args) { if (String.IsNullOrEmpty(format)) { throw new ArgumentException("format"); } Errors = String.Format(format,args); count = Errors.Split(new string[] { Environment.NewLine },StringSplitOptions.RemoveEmptyEntries).Length; } public string Errors { get; private set; } public override void ExecuteResult(ControllerContext context) { if (context == null) { throw new ArgumentNullException("context"); } HttpResponseBase response = context.HttpContext.Response; response.TrySkipIisCustomErrors = true; response.StatusCode = BadRequestCode; response.StatusDescription = String.Format("Bad Request {0} Error(s)",count); response.Write(Errors); response.End(); } } 解决方法
您不能在HTTP标头的中间使用换行符.
HTTP协议指定标头的结尾是换行符. 由于换行符位于标题的中间,因此标题不是有效的标题,您将收到此错误. 修复:不要在HTTP标头的中间放置换行符. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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