/// <summary>
/// 任务进行
/// </summary>
/// <param name="obj"></param>
private static void TaskRun(object obj)
{
HTTPParamIndie param = obj as HTTPParamIndie;
try
{
var datas = HTTPRequest.Get(param);
FileStream fileStream = datas.Item1;
Stream stream = datas.Item2;
long fileLength = datas.Item3;
long totalLength = datas.Item4;
param.FileLength = fileLength;
param.TotalLength = totalLength;
if (fileStream == null || stream == null)
{
StopTask(param);
return;
}
if (!HTTPRequest.MD5Verfied(param.MD5, stream))
{
param.MD5FailCallBack?.Invoke();
return;
}
byte[] buff = new byte[4096];
int len = -1;
while ((len = stream.Read(buff, 0, buff.Length)) > 0)
{
fileStream.Write(buff, 0, len);
param.FileLength += len;
}
param.SuccessCallBack?.Invoke();
StopTask(param);
ContinueTask();
}
catch (Exception e)
{
if (param.CurRetryTime < param.RetryTime)
{
StopTask(param);
StartTask(param);
param.CurRetryTime++;
}
param.FailCallBack?.Invoke();
}
}
/// <summary>
/// 开始任务
/// </summary>
/// <param name="param"></param>
private static void StartTask(HTTPParamIndie param)
{
if (_lstThread.Count < MaxThread)
{
Thread t = new Thread(new ParameterizedThreadStart(TaskRun));
param.RelateThread = t;
t.Start(param);
_lstThread.Add(t);
}
else
{
_queueParams.Enqueue(param);
}
}
// Start is called before the first frame update
void Start()
{
//steam下载地址
string url = @"https://media.st.dl.eccdnx.com/client/installer/steam.dmg";
string pathFormat = Application.dataPath + "/StreamingAssets/steam_{0}.dmg";
//单个下载
HTTPParamIndie paramIndie = new HTTPParamIndie(url, string.Format(pathFormat, 1), "", 1);
indie = new HTTPDownloadIndie(paramIndie);
indie.DownLoad();
//----------
////批量下载
List <string> urls = new List <string>();
List <string> paths = new List <string>();
List <string> md5s = new List <string>();
for (int i = 2; i <= 40; i++)
{
urls.Add(url);
paths.Add(string.Format(pathFormat, i));
md5s.Add(i.ToString());
}
HTTPParamBatch paramBatch = new HTTPParamBatch();
paramBatch.Urls = urls;
paramBatch.Paths = paths;
paramBatch.MD5S = md5s;
paramBatch.MaxThread = 10;
batch = new HTTPDownloadBatch(paramBatch);
batch.DownLoad();
//--------------
//信息打印
t = new Timer();
t.Elapsed += timeCallBack;
t.Interval = 1000;
t.Start();
}
/// <summary>
/// 初始化下载器
/// </summary>
private void SetDlders()
{
_dlders.Clear();
int urlCnt = _param.Urls.Count;
int indieMaxThread = _param.MaxThread / urlCnt;
indieMaxThread = Math.Max(indieMaxThread, 1);
for (int i = 0; i < urlCnt; i++)
{
string url = _param.Urls[i];
string path = _param.Paths[i];
string md5 = _param.MD5S[i];
HTTPParamIndie indieParam = new HTTPParamIndie(url, path, md5, indieMaxThread);
indieParam.TimeOut = _param.TimeOut;
indieParam.RetryTime = _param.RetryTime;
HTTPDownloadIndie dlder = new HTTPDownloadIndie(indieParam);
_dlders.Add(dlder);
dlder.DownLoad();
}
}
/// <summary>
/// 添加任务
/// </summary>
/// <param name="param"></param>
public static void AddTask(HTTPParamIndie param)
{
StartTask(param);
}
/// <summary>
/// 停止任务，并检测下一个任务
/// </summary>
/// <param name="param"></param>
private static void StopTask(HTTPParamIndie param)
{
_lstThread.Remove(param.RelateThread);
ContinueTask();
param.RelateThread.Abort();
}
/// <summary>
/// 根据参数获取返回数据
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public static (FileStream, Stream, long, long) Get(HTTPParamIndie param)
{
if (param == null)
{
return(GetDefaultReturn());
}
// 构建文件流
FileStream fs = new FileStream(param.Path, FileMode.OpenOrCreate, FileAccess.ReadWrite);
// 文件当前长度
long fileLength = fs.Length;
long totalLength = 0;
//设置当前文件数据位置
fs.Seek(fileLength, SeekOrigin.Begin);
// 发送请求开始下载
HttpWebRequest request = WebRequest.Create(param.Url) as HttpWebRequest;
if (request == null)
{
return(GetDefaultReturn());
}
request.Timeout = param.TimeOut;
WebResponse response = request.GetResponse();
if (response == null)
{
return(GetDefaultReturn());
}
//获取文件总大小
totalLength = response.ContentLength;
if (fileLength >= totalLength)
{
return(null, null, fileLength, totalLength);
}
request.AddRange(fs.Length);
response = request.GetResponse();
if (response == null)
{
return(GetDefaultReturn());
}
// 读取文件内容
Stream stream = response.GetResponseStream();
if (stream == null)
{
return(GetDefaultReturn());
}
if (stream.CanTimeout)
{
stream.ReadTimeout = param.TimeOut;
}
return(fs, stream, fileLength, totalLength);
}
