Question

我已经制作了一个c＃应用程序，它可以控制Onvif相机，它在某种程度上起作用。我可以发现，连接和控制相机，但是在发送一些（每次不同的量）移动命令后，相机变得没有响应，出现错误“操作已经超时”，我必须重新启动相机再次使用它。代码如下：

        Uri uri = new Uri(String.Format("http://" 
                + ipAddr + "/onvif/" + "{0}", Service));
        HttpWebRequest request = (HttpWebRequest) WebRequest.Create((uri));
        request.KeepAlive = false;
        //WebRequest request = WebRequest.Create((uri));
        request.Method = "POST";

        byte[] b = Encoding.ASCII.GetBytes(PostData);
        request.ContentLength = b.Length;
        request.Proxy = null;

        request.Timeout = 5000;
        Stream stream = request.GetRequestStream();

        //Send Message
        XmlDocument recData = new XmlDocument();
        try
        {
            lock (_lock)
            {
                using (stream = request.GetRequestStream())
                {
                    if (stream.CanWrite)
                    {
                        stream.Flush();
                        stream.Write(b, 0, b.Length);
                    }
                }
                //Store response
                var response = (HttpWebResponse) request.GetResponse();
                if (response.GetResponseStream() != null)
                {
                    string responsestring = new StreamReader(response.GetResponseStream()).ReadToEnd();
                    recData.LoadXml(responsestring);
                    Thread.Sleep(1);
                }
                Thread.Sleep(200);
                stream.Flush();
                IsBusy = false;
                Rec = true;
            }
        }

代码挂起在var响应行上。使用wireshark我发现相机没有响应。是否有更好的方法可用于发送请求或我可以忽略响应的方式？

Onvif ptz操作超时

0 个答案: