using?System;
using?System.Collections.Generic;
using?System.Text;
using?System.Net;
using?System.IO;

namespace?Thunder8
{
????public?class?HttpUploader
????{
????????const?long?partLength?=?1024?*?1024?*?100;
????????const?string?succuessFlag?=?“1“;

????????public?static?string?Upload（string?fileName?string?httpUrllong?seekPosition）
????????{
????????????string?result?=?string.Empty;
????????????FileStream?fs?=?File.OpenRead（fileName）;
????????????HttpWebRequest?request?=?null;
????????????HttpWebResponse?response?=?null;
????????????Stream?requestStream?=?null;
????????????Stream?responseStream?=?null;

????????????try
????????????{
????????????????long?fileLength?=?fs.Length;
????????????????long?endPosition?=?seekPosition?+?partLength;

????????????????request?=?（HttpWebRequest）HttpWebRequest.Create（httpUrl）;
????????????????request.Timeout?=?-1;
????????????????request.ContentType?=?“application/octet-stream“;
????????????????request.AddRange（（int）seekPosition）;
????????????????requestStream?=?request.GetRequestStream（）;

????????????????byte[]?buffer?=?new?byte[1024?*?10];
????????????????fs.Seek（seekPosition?SeekOrigin.Begin）;

????????????????int?readLength?=?fs.Read（buffer?0?buffer.Length）;
????????????????while?（seekPosition??0）
????????????????{
????????????????????requestStream.Write（buffer?0?readLength）;
????????????????????requestStream.Flush（）;
????????????????????seekPosition?+=?readLength;
????????????????????readLength?=?fs.Read（buffer?0?buffer.Length）;
????????????????}

????????????????response?=?（HttpWebResponse）request.GetResponse（）;
?