我已經戲劇性地改變了這個問題,但它在這裏。我正在從IP攝像機讀取mjpeg流,一切正常。但現在在我接收到的每一幀中(請參閱stream_NewFrame),我想將此圖像推送給客戶端。但我似乎無法弄清楚如何訪問HttpContext.Current導致它在該函數中始終爲空。有沒有人知道如何訪問HttpContext上下文,就像我可以在ProcessRequest函數中一樣?我想在這裏我錯過了一些明顯的東西,但我無法弄清楚什麼!感謝您的時間。ashx處理程序,訪問HttpContext.Current裏面的空洞
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;
}
}
}