Ejemplo n.º 1
0
        public ServerFileInfo GetFileInfo(string url)
        {
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;

            ServerFileInfo fileinfo = new ServerFileInfo();
            fileinfo.ResponseUri = response.ResponseUri;
            fileinfo.FileType = response.ContentType;
            fileinfo.FileSize = response.ContentLength;
            fileinfo.LastModified = response.LastModified;
            fileinfo.Method = response.Method;
            fileinfo.Server = response.Server;
            fileinfo.AcceptRange = string.Compare(response.Headers["Accept-Ranges"], "bytes", true) == 0;
            fileinfo.StatueCode = response.StatusCode;
            fileinfo.CharacterSet = response.CharacterSet;
            fileinfo.ContentEncoding = response.ContentEncoding;
            fileinfo.ProtocolVersion = response.ProtocolVersion.ToString();
            fileinfo.StatusDescription = response.StatusDescription;

            response.Close();

            return fileinfo;
        }
Ejemplo n.º 2
0
        /// <summary>
        /// 开始暂停的任务
        /// </summary>
        private void StartPrepared()
        {
            int errorTime = 0;
            try
            {
                do
                {
                    errorTime++;

                    try
                    {
                        serverFileInfo = httpManager.GetFileInfo(url);
                        break;
                    }
                    catch
                    {
                        if (errorTime < Settings.Default.MaxConnect)
                        {
                            SetState(DownloadState.WaitForConnect);
                            Thread.Sleep(TimeSpan.FromMilliseconds(Settings.Default.RetryDelay));
                        }
                        else
                        {
                            return;
                        }
                    }

                } while (true);
            }
            finally
            {
                SetState(DownloadState.prepared);
            }

            StartSegments();
        }
Ejemplo n.º 3
0
        private void StartNeedToPrepare()
        {
            int errorTime = 0;
            SetState(DownloadState.Preparing);

            do
            {
                if (state == DownloadState.pausing)
                {
                    SetState(DownloadState.NeedToPrepare);
                    return;
                }

                SetState(DownloadState.Preparing);
                errorTime++;

                try
                {
                    serverFileInfo = httpManager.GetFileInfo(url);
                    if ((HttpStatusCode)serverFileInfo.StatueCode == HttpStatusCode.OK)
                    {
                        break;
                    }
                }
                catch (ThreadAbortException)
                {
                    SetState(DownloadState.NeedToPrepare);
                    return;
                }
                catch (Exception ex)
                {
                    if (errorTime < Settings.Default.MaxConnect)
                    {
                        SetState(DownloadState.WaitForConnect);
                        Thread.Sleep(TimeSpan.FromMilliseconds(Settings.Default.RetryDelay));
                    }
                    else
                    {
                        SetState(DownloadState.NeedToPrepare);
                        return;
                    }
                }

            } while (true);

            try
            {
                CreateSegments();
            }
            catch(ThreadAbortException)
            {
                throw;
            }
            catch
            {
                SetState(DownloadState.EndedWithError);
            }
        }