public void Connecting(TorrentModel model)
{
var ls = new List <AnnounceItem>();
ls.AddRange(model.Announce_list.SelectMany(m => m));
if (!string.IsNullOrEmpty(model.Announce.Url))
{
ls.Add(model.Announce);
}
var us = ls.Where(m => m.Url.StartsWith("udp"));
_logger.LogInformation("udp announce数量：" + us.Count());
foreach (var item in us)
{
var u = new Uri(item.Url);
var ip = GetIp(u);
if (ip == null)
{
continue;
}
IPEndPoint iPEndPoint = new IPEndPoint(ip, u.Port);
var ids = ConnecttionId_TransactionId.CreateNext();
_logger.LogInformation($"对{item.Url}发送请求,Ids:{ids}");
_socket.SendTo(ids.ToArray(), iPEndPoint);
_dic.Add(ids, model);
_connectingLs.Add(new ReplayItem {
Ids = ids, EndPoint = iPEndPoint
}, 0);
}
}
private void HandleTrack(byte[] buf, int receiveLen, EndPoint remoteEP)
{
using (var ms = new MemoryStream(buf, 0, receiveLen))
using (var br = new BinaryReader(ms))
{
var action = (ActionsType)IPAddress.NetworkToHostOrder(br.ReadInt32());
if (action == ActionsType.Connect)
{
var transaction_id = IPAddress.NetworkToHostOrder(br.ReadInt32());
var connection_id = IPAddress.NetworkToHostOrder(br.ReadInt64());
_logger.LogInformation($"收到字节长度：{receiveLen}，i32:{transaction_id},i64:{connection_id}");
var ids = ConnecttionId_TransactionId.Create(transaction_id, connection_id);
if (_dic.ContainsKey(ids))
{
var model = _dic[ids];
//_logger.LogInformation(model.Info.Name ?? model.Info.Files.FirstOrDefault()?.Path.FirstOrDefault());
Announcing(model, connection_id, transaction_id, remoteEP);
//Scraping(model, connection_id, transaction_id, remoteEP);
}
var rk = new ReplayItem()
{
EndPoint = remoteEP, Ids = ids
};
if (_connectingLs.ContainsKey(rk))
{
//_logger.LogInformation("已获取udp返回的值，从循环数据源删除相关数据");
_connectingLs.Remove(rk);
}
_connectingLs.Remove(new ReplayItem {
Ids = ids, EndPoint = remoteEP
});
}
else if (action == ActionsType.Announce)
{
var transaction_id = IPAddress.NetworkToHostOrder(br.ReadInt32());
var interval = IPAddress.NetworkToHostOrder(br.ReadInt32());
var leechers = IPAddress.NetworkToHostOrder(br.ReadInt32());
var seeders = IPAddress.NetworkToHostOrder(br.ReadInt32());
var ls = new List <IPEndPoint>();
while (ms.Position != ms.Length)
{
var ip = br.ReadBytes(4);
var port = br.ReadUInt16();
var ipendpoint = new IPEndPoint(new IPAddress(ip), port);
ls.Add(ipendpoint);
}
_logger.LogInformation("收到响应 transaction_id:" + transaction_id + ",ip-" + ls.Aggregate("", (s, i) => s + i + ";"));
var ids = ConnecttionId_TransactionId.Create(transaction_id);
if (_dic.ContainsKey(ids))
{
var model = _dic[ids];
var tr = new TrackerResponse(remoteEP as IPEndPoint)
{
Peers = ls.ToArray(),
Interval = interval,
Complete = seeders,
Incomplete = leechers
};
model.Download(tr);
IsOk = true;
_dic.Remove(ids);
if (!model.IsFinish)
{
_ = Task.Delay(TimeSpan.FromSeconds(tr.Interval))
.ContinueWith(t =>
{
_socket.SendTo(ids.ToArray(), remoteEP);
_dic.Add(ids, model);
_connectingLs.Add(new ReplayItem {
Ids = ids, EndPoint = remoteEP
}, 0);
});
}
}
}
else if (action == ActionsType.Scrape)
{
var transaction_id = IPAddress.NetworkToHostOrder(br.ReadInt32());
var ids = ConnecttionId_TransactionId.Create(transaction_id);
var complete = IPAddress.NetworkToHostOrder(br.ReadInt32());
var downloaded = IPAddress.NetworkToHostOrder(br.ReadInt32());
var incomplete = IPAddress.NetworkToHostOrder(br.ReadInt32());
// todo do something for Scrape
}
else if (action == ActionsType.Error)
{
br.ReadInt32();
var i1 = br.BaseStream.Length;
var i2 = br.BaseStream.Position;
bool ishavestr = i1 != i2;
if (ishavestr)
{
var strbuf = br.ReadBytes((int)(i1 - i2));
var errMsg = Encoding.UTF8.GetString(strbuf);
_logger.LogWarnning($"{remoteEP}：udp errmsg:" + errMsg);
}
}
else
{
_logger.LogInformation("收到某些响应。。。");
}
}
}