public void Start_load(int number,string url,string path1)
{
downornot = true;
strurl = url;
GetPath(path1);
GetURLType(url);
GetFileName(url);
setfilename = path+true_filename + "set." + "txt";
if (File.Exists(setfilename))
{
Console.WriteLine("exist");
Restart_load();
}
else
{
Console.WriteLine("not exist");
dt = DateTime.Now;//开始接收时间
HttpWebRequest request;
long filesize = 0;
downloadcontrol downcontrol = new downloadcontrol(this); //set speed etc.
testspeed = new Thread(downcontrol.set);
testspeed.Start();
try
{
request = (HttpWebRequest)HttpWebRequest.Create(strurl);
filesize = request.GetResponse().ContentLength;//取得目标文件的长度
DownLoadsize = filesize;
request.Abort();
}
catch (Exception er)
{
//MessageBox.Show (er.Message );
}
// 接收线程数
thread = number;
//根据线程数初始化数组
threadw = new bool[thread];
filenamew = new string[thread];
filestartw = new long[thread];
filesizew = new long[thread];
//计算每个线程应该接收文件的大小
long filethread = filesize / thread;//平均分配
long filethreade = filesize - filethread * (thread - 1);//剩余部分由最后一个线程完成
//为数组赋值
for (int i = 0; i < thread; i++)
{
threadw[i] = false;//每个线程状态的初始值为假
filenamew[i] = path+true_filename + i.ToString() + ".dat";//每个线程接收文件的临时文件名
if (i < thread - 1)
{
filestartw[i] = filethread * i;//每个线程接收文件的起始点
filesizew[i] = filethread - 1;//每个线程接收文件的长度
}
else
{
filestartw[i] = filethread * i;
filesizew[i] = filethreade - 1;
}
}
//保存到文件
FileStream setfs;
setfs = new FileStream(path+true_filename + "set." + "txt", System.IO.FileMode.Create);
StreamWriter sw = new StreamWriter(setfs);
sw.WriteLine(strurl);
sw.WriteLine(thread);
sw.WriteLine(path);
for (int i = 0; i < thread; i++)
{
sw.WriteLine(filenamew[i]);//每个线程接收文件的文件名
sw.WriteLine(filestartw[i]);//每个线程接收文件的起始位置
sw.WriteLine(filesizew[i]);//每个线程接收文件的大小
sw.WriteLine(threadw[i]);
}
sw.WriteLine(dt);
//清空缓冲区
sw.Flush();
//关闭流
sw.Close();
setfs.Close();
//定义线程数组，启动接收线程
threadk = new Thread[thread];
httpfile = new HttpFile[thread];
for (int j = 0; j < thread; j++)
{
httpfile[j] = new HttpFile(this, j);
threadk[j] = new Thread(new ThreadStart(httpfile[j].receive));
threadk[j].Start();
}
//启动合并各线程接收的文件线程
hbth = new Thread(new ThreadStart(hbfile));
hbth.Start();
}
}
public void Restart_load()
{
HttpWebRequest request;
request = (HttpWebRequest)HttpWebRequest.Create(strurl);
DownLoadsize= request.GetResponse().ContentLength;//取得目标文件的长度
request.Abort();
StreamReader sw = new StreamReader(path+true_filename + "set." + "txt");
strurl=sw.ReadLine();
thread=Convert.ToInt32(sw.ReadLine());
path = sw.ReadLine();
//根据线程数初始化数组
threadw = new bool[thread];
filenamew = new string[thread];
filestartw = new long[thread];
filesizew = new long[thread];
for (int i = 0; i < thread; i++)
{
filenamew[i]=sw.ReadLine();//每个线程接收文件的文件名
filestartw[i]=Convert.ToInt32(sw.ReadLine());//每个线程接收文件的起始位置
filesizew[i] = Convert.ToInt32(sw.ReadLine());//每个线程接收文件的大小
threadw[i] = Convert.ToBoolean(sw.ReadLine());
Console.WriteLine(filenamew[i]+filesizew[i].ToString());
}
dt = Convert.ToDateTime(sw.ReadLine());
sw.Close();
Console.ReadLine();
threadk = new Thread[thread];
httpfile = new HttpFile[thread];
for (int j = 0; j < thread; j++)
{
httpfile[j] = new HttpFile(this, j);
threadk[j] = new Thread(new ThreadStart(httpfile[j].receive));
threadk[j].Start();
}
downloadcontrol downcontrol = new downloadcontrol(this);
testspeed = new Thread(downcontrol.set);
testspeed.Start();
//启动合并各线程接收的文件线程
hbth = new Thread(new ThreadStart(hbfile));
hbth.Start();
}