我已经戏剧性地改变了这个问题,但它在这里。我正在从IP摄像机读取mjpeg流,一切正常。但现在在我接收到的每一帧中(请参阅stream_NewFrame),我想将此图像推送给客户端。但我似乎无法弄清楚如何访问HttpContext.Current导致它在该函数中始终为空。有没有人知道如何访问HttpContext上下文,就像我可以在ProcessRequest函数中一样?我想在这里我错过了一些明显的东西,但我无法弄清楚什么!感谢您的时间。ashx处理程序,访问HttpContext.Current里面的空洞
public class ImageHandler : IHttpHandler, IRequiresSessionState
{
public void ProcessRequest(HttpContext context)
{
//Get parameter
string Url = context.Request.QueryString["url"];
string Username = context.Request.QueryString["username"];
string Password = context.Request.QueryString["password"];
//Set cache
HttpResponse Response = HttpContext.Current.Response;
Response.Expires = 0;
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "multipart/x-mixed-replace";
// create MJPEG video source
MJPEGStream stream = new MJPEGStream(string.Format("{0}/video.cgi?user={1}&pwd={2}", Url, Username, Password));
stream.NewFrame += new NewFrameEventHandler(stream_NewFrame);
stream.Start();
}
private void stream_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
Image img = eventArgs.Frame;
byte[] b = GetImageBytes(eventArgs.Frame);
HttpContext.Current.Response.OutputStream.Write(b, 0, b.Length);
}
public bool IsReusable
{
get
{
return false;
}
}
}