/// <summary>
/// 向一个Socket发送集合中某个文件的一部分内容
/// </summary>
/// <param name="client">已连接的Socket</param>
/// <param name="id">文件的标识号</param>
/// <param name="offset">发送内容的起始位置</param>
/// <param name="length">发送内容的长度</param>
public void Send(System.Net.Sockets.Socket client, int id, int offset, int length)
{
if (this.ContainsKey(id))
{
FileInfo fi = this[id];
lock (this)
{
System.IO.FileStream fs = new System.IO.FileStream(Config.WorkPath + fi.ToString(), System.IO.FileMode.Open);
MessageBuffer mb = new MessageBuffer(MessageType.SendFile, id, offset, length);
mb.ReadFileBytes(fs);
client.Send(mb.GetBytes());
fs.Close();
}
}
else
{
MessageBuffer mb = new MessageBuffer(MessageType.RequeryBlockError, id, offset, 0);
client.Send(mb.GetBytes());
}
}
/// <summary>
/// 向一个Socket发送集合中的所有文件
/// </summary>
/// <param name="client">已连接的Socket</param>
public void Send(System.Net.Sockets.Socket client)
{
lock (this)
{
IEnumerator ie = this.GetEnumerator();
while (ie.MoveNext())
{
FileInfo fi = ((DictionaryEntry)ie.Current).Value as FileInfo;
int id = (int)((DictionaryEntry)ie.Current).Key;
lock (this)//防止多线程同时打开文件
{
System.IO.FileStream fs = new System.IO.FileStream(Config.WorkPath + fi.ToString(), System.IO.FileMode.Open, System.IO.FileAccess.Read);
try
{
int i = 0;
if (FileResume != null && FileResume.ID == id)
{
i = FileOffSet;//续传文件从续传位置开始
}
for (; i < fs.Length; i += Config.FILE_BLOCK_LENGTH)
{
MessageBuffer mb = new MessageBuffer(MessageType.SendFile, id, i, Config.FILE_BLOCK_LENGTH);
mb.ReadFileBytes(fs);
client.Send(mb.GetBytes());
}
}
finally
{
fs.Close();//确保关闭文件流
}
}
}
}
}