Question

我一直在研究一个非常古老的ASP.net项目。对于某些特定请求，我想用二进制数据响应客户端，所以我写了下面的代码：

public class MyHttpHandler : IHttpHandler {
  public void ProcessRequest(HttpContext context) {
    var response = context.Response;

    #region weird behavior

    response.TrySkipIisCustomErrors = true;  // Some post on SO suggests doing this, but doesn't work for me.
    response.ClearHeaders();  // Don't know if this helps, but at least won't hurt.
    response.StatusCode = 201;
    response.ContentType = "application/octet-stream";
    response.Headers["X-Custom-Header"] = "foo";
    response.Flush();  // Adding Flush() here won't work

    #endregion

    using(
      var input = new FileStream(
        @"C:\path\to\binary-file", 
        FileMode.Open,
        FileAccess.Read
      )
    ) {
      var output = response.OutputStream;
      var bufferSize = 1024;
      var buffer = new byte[bufferSize];
      var readLength = 0;
      do {
        readLength = input.Read(buffer, 0, bufferSize);
        output.Write(buffer, 0, readLength);
        output.Flush();
      } while(readLength > 0);
    }
  }
}

奇怪的是，虽然我得到了正确的响应主体，但我手动设置的状态代码，内容类型和自定义标头都丢失了。我获得的实际内容类型始终为text/html; charset=utf-8，实际状态代码始终为200。怎么会这样？

ASP.net HttpResponse删除除正文

0 个答案: