protected override Task OnStopped(CancellationToken cancel_token)
{
switch (StoppedReason)
{
case StopReason.None:
break;
case StopReason.Any:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
break;
case StopReason.SendTimeoutError:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_SKIP));
break;
case StopReason.BadAgentError:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_BADAGENT));
break;
case StopReason.ConnectionError:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_READ));
break;
case StopReason.NotIdentifiedError:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_NOTIDENTIFIED));
break;
case StopReason.UnavailableError:
{
//次に接続するホストを送ってQUIT
foreach (var node in SelectSourceHosts((IPEndPoint)RemoteEndPoint))
{
if (Downhost != null && Downhost.SessionID == node.SessionID)
{
continue;
}
var host_atom = new AtomCollection(node.Extra);
Atom ip = host_atom.FindByName(Atom.PCP_HOST_IP);
while (ip != null)
{
host_atom.Remove(ip);
ip = host_atom.FindByName(Atom.PCP_HOST_IP);
}
Atom port = host_atom.FindByName(Atom.PCP_HOST_PORT);
while (port != null)
{
host_atom.Remove(port);
port = host_atom.FindByName(Atom.PCP_HOST_PORT);
}
host_atom.SetHostSessionID(node.SessionID);
var globalendpoint = node.GlobalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(globalendpoint.Address);
host_atom.AddHostPort(globalendpoint.Port);
var localendpoint = node.LocalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(localendpoint.Address);
host_atom.AddHostPort(localendpoint.Port);
host_atom.SetHostNumRelays(node.RelayCount);
host_atom.SetHostNumListeners(node.DirectCount);
host_atom.SetHostChannelID(Channel.ChannelID);
host_atom.SetHostFlags1(
(node.IsFirewalled ? PCPHostFlags1.Firewalled : PCPHostFlags1.None) |
(node.IsTracker ? PCPHostFlags1.Tracker : PCPHostFlags1.None) |
(node.IsRelayFull ? PCPHostFlags1.None : PCPHostFlags1.Relay) |
(node.IsDirectFull ? PCPHostFlags1.None : PCPHostFlags1.Direct) |
(node.IsReceiving ? PCPHostFlags1.Receiving : PCPHostFlags1.None) |
(node.IsControlFull ? PCPHostFlags1.None : PCPHostFlags1.ControlIn));
Connection.WriteAsync(new Atom(Atom.PCP_HOST, host_atom));
Logger.Debug("Sending Node: {0}({1})", globalendpoint, node.SessionID.ToString("N"));
}
}
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_UNAVAILABLE));
break;
case StopReason.OffAir:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_OFFAIR));
break;
case StopReason.UserShutdown:
Connection.WriteAsync(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_SHUTDOWN));
break;
}
if (Channel != null)
{
Channel.ContentChanged -= Channel_ContentChanged;
Channel.ChannelInfoChanged -= Channel_ChannelPropertyChanged;
Channel.ChannelTrackChanged -= Channel_ChannelPropertyChanged;
}
return(base.OnStopped(cancel_token));
}
protected virtual void OnPCPHelo(Atom atom)
{
if (Downhost!=null) return;
Logger.Debug("Helo received");
var session_id = atom.Children.GetHeloSessionID();
int remote_port = 0;
if (session_id!=null) {
var host = new HostBuilder();
host.SessionID = session_id.Value;
var port = atom.Children.GetHeloPort();
var ping = atom.Children.GetHeloPing();
if (port!=null) {
remote_port = port.Value;
}
else if (ping!=null) {
if (IsPingTarget(((IPEndPoint)RemoteEndPoint).Address) &&
PingHost(new IPEndPoint(((IPEndPoint)RemoteEndPoint).Address, ping.Value), session_id.Value)) {
remote_port = ping.Value;
}
else {
remote_port = 0;
}
}
else {
remote_port = 0;
}
if (remote_port!=0) {
var ip = new IPEndPoint(((IPEndPoint)RemoteEndPoint).Address, remote_port);
if (host.GlobalEndPoint==null || !host.GlobalEndPoint.Equals(ip)) {
host.GlobalEndPoint = ip;
}
}
host.IsFirewalled = remote_port==0;
host.Extra.Update(atom.Children);
Downhost = host.ToHost();
}
var oleh = new AtomCollection();
if (RemoteEndPoint!=null && RemoteEndPoint.AddressFamily==System.Net.Sockets.AddressFamily.InterNetwork) {
oleh.SetHeloRemoteIP(((IPEndPoint)RemoteEndPoint).Address);
}
oleh.SetHeloAgent(PeerCast.AgentName);
oleh.SetHeloSessionID(PeerCast.SessionID);
oleh.SetHeloRemotePort(remote_port);
oleh.SetHeloVersion(PCP_VERSION);
Send(new Atom(Atom.PCP_OLEH, oleh));
if (Downhost==null) {
Logger.Info("Helo has no SessionID");
//セッションIDが無かった
Stop(StopReason.NotIdentifiedError);
}
else if ((Downhost.Extra.GetHeloVersion() ?? 0)<1200) {
Logger.Info("Helo version {0} is too old", Downhost.Extra.GetHeloVersion() ?? 0);
//クライアントバージョンが無かった、もしくは古すぎ
Stop(StopReason.BadAgentError);
}
else if (IsRelayFull) {
Logger.Debug("Handshake succeeded {0}({1}) but relay is full", Downhost.GlobalEndPoint, Downhost.SessionID.ToString("N"));
//次に接続するホストを送ってQUIT
foreach (var node in SelectSourceHosts((IPEndPoint)RemoteEndPoint)) {
var host_atom = new AtomCollection(node.Extra);
Atom ip = host_atom.FindByName(Atom.PCP_HOST_IP);
while (ip!=null) {
host_atom.Remove(ip);
ip = host_atom.FindByName(Atom.PCP_HOST_IP);
}
Atom port = host_atom.FindByName(Atom.PCP_HOST_PORT);
while (port!=null) {
host_atom.Remove(port);
port = host_atom.FindByName(Atom.PCP_HOST_PORT);
}
host_atom.SetHostSessionID(node.SessionID);
var globalendpoint = node.GlobalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(globalendpoint.Address);
host_atom.AddHostPort(globalendpoint.Port);
var localendpoint = node.LocalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(localendpoint.Address);
host_atom.AddHostPort(localendpoint.Port);
host_atom.SetHostNumRelays(node.RelayCount);
host_atom.SetHostNumListeners(node.DirectCount);
host_atom.SetHostChannelID(Channel.ChannelID);
host_atom.SetHostFlags1(
(node.IsFirewalled ? PCPHostFlags1.Firewalled : PCPHostFlags1.None) |
(node.IsTracker ? PCPHostFlags1.Tracker : PCPHostFlags1.None) |
(node.IsRelayFull ? PCPHostFlags1.None : PCPHostFlags1.Relay) |
(node.IsDirectFull ? PCPHostFlags1.None : PCPHostFlags1.Direct) |
(node.IsReceiving ? PCPHostFlags1.Receiving : PCPHostFlags1.None) |
(node.IsControlFull ? PCPHostFlags1.None : PCPHostFlags1.ControlIn));
Send(new Atom(Atom.PCP_HOST, host_atom));
Logger.Debug("Sending Node: {0}({1})", globalendpoint, node.SessionID.ToString("N"));
}
Stop(StopReason.UnavailableError);
}
else {
Logger.Debug("Handshake succeeded {0}({1})", Downhost.GlobalEndPoint, Downhost.SessionID.ToString("N"));
Send(new Atom(Atom.PCP_OK, (int)1));
}
}
protected override void DoStop(StopReason reason)
{
switch (reason) {
case StopReason.None:
break;
case StopReason.Any:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
break;
case StopReason.SendTimeoutError:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_SKIP));
break;
case StopReason.BadAgentError:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_BADAGENT));
break;
case StopReason.ConnectionError:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_READ));
break;
case StopReason.NotIdentifiedError:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_NOTIDENTIFIED));
break;
case StopReason.UnavailableError:
{
//次に接続するホストを送ってQUIT
foreach (var node in SelectSourceHosts((IPEndPoint)RemoteEndPoint)) {
if (Downhost!=null && Downhost.SessionID==node.SessionID) continue;
var host_atom = new AtomCollection(node.Extra);
Atom ip = host_atom.FindByName(Atom.PCP_HOST_IP);
while (ip!=null) {
host_atom.Remove(ip);
ip = host_atom.FindByName(Atom.PCP_HOST_IP);
}
Atom port = host_atom.FindByName(Atom.PCP_HOST_PORT);
while (port!=null) {
host_atom.Remove(port);
port = host_atom.FindByName(Atom.PCP_HOST_PORT);
}
host_atom.SetHostSessionID(node.SessionID);
var globalendpoint = node.GlobalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(globalendpoint.Address);
host_atom.AddHostPort(globalendpoint.Port);
var localendpoint = node.LocalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(localendpoint.Address);
host_atom.AddHostPort(localendpoint.Port);
host_atom.SetHostNumRelays(node.RelayCount);
host_atom.SetHostNumListeners(node.DirectCount);
host_atom.SetHostChannelID(Channel.ChannelID);
host_atom.SetHostFlags1(
(node.IsFirewalled ? PCPHostFlags1.Firewalled : PCPHostFlags1.None) |
(node.IsTracker ? PCPHostFlags1.Tracker : PCPHostFlags1.None) |
(node.IsRelayFull ? PCPHostFlags1.None : PCPHostFlags1.Relay) |
(node.IsDirectFull ? PCPHostFlags1.None : PCPHostFlags1.Direct) |
(node.IsReceiving ? PCPHostFlags1.Receiving : PCPHostFlags1.None) |
(node.IsControlFull ? PCPHostFlags1.None : PCPHostFlags1.ControlIn));
Send(new Atom(Atom.PCP_HOST, host_atom));
Logger.Debug("Sending Node: {0}({1})", globalendpoint, node.SessionID.ToString("N"));
}
}
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_UNAVAILABLE));
break;
case StopReason.OffAir:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_OFFAIR));
break;
case StopReason.UserShutdown:
Send(new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT + Atom.PCP_ERROR_SHUTDOWN));
break;
}
base.DoStop(reason);
}
protected virtual void OnPCPHelo(Atom atom)
{
if (Downhost != null)
{
return;
}
Logger.Debug("Helo received");
var session_id = atom.Children.GetHeloSessionID();
int remote_port = 0;
if (session_id != null)
{
var host = new HostBuilder();
host.SessionID = session_id.Value;
var port = atom.Children.GetHeloPort();
var ping = atom.Children.GetHeloPing();
if (port != null)
{
remote_port = port.Value;
}
else if (ping != null)
{
if (IsPingTarget(((IPEndPoint)RemoteEndPoint).Address) &&
PingHost(new IPEndPoint(((IPEndPoint)RemoteEndPoint).Address, ping.Value), session_id.Value))
{
remote_port = ping.Value;
}
else
{
remote_port = 0;
}
}
else
{
remote_port = 0;
}
if (remote_port != 0)
{
var ip = new IPEndPoint(((IPEndPoint)RemoteEndPoint).Address, remote_port);
if (host.GlobalEndPoint == null || !host.GlobalEndPoint.Equals(ip))
{
host.GlobalEndPoint = ip;
}
}
host.IsFirewalled = remote_port == 0;
host.Extra.Update(atom.Children);
Downhost = host.ToHost();
}
var oleh = new AtomCollection();
if (RemoteEndPoint != null && RemoteEndPoint.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
oleh.SetHeloRemoteIP(((IPEndPoint)RemoteEndPoint).Address);
}
oleh.SetHeloAgent(PeerCast.AgentName);
oleh.SetHeloSessionID(PeerCast.SessionID);
oleh.SetHeloRemotePort(remote_port);
oleh.SetHeloVersion(PCP_VERSION);
Send(new Atom(Atom.PCP_OLEH, oleh));
if (Downhost == null)
{
Logger.Info("Helo has no SessionID");
//セッションIDが無かった
Stop(StopReason.NotIdentifiedError);
}
else if ((Downhost.Extra.GetHeloVersion() ?? 0) < 1200)
{
Logger.Info("Helo version {0} is too old", Downhost.Extra.GetHeloVersion() ?? 0);
//クライアントバージョンが無かった、もしくは古すぎ
Stop(StopReason.BadAgentError);
}
else if (IsRelayFull)
{
Logger.Debug("Handshake succeeded {0}({1}) but relay is full", Downhost.GlobalEndPoint, Downhost.SessionID.ToString("N"));
//次に接続するホストを送ってQUIT
foreach (var node in SelectSourceHosts((IPEndPoint)RemoteEndPoint))
{
var host_atom = new AtomCollection(node.Extra);
Atom ip = host_atom.FindByName(Atom.PCP_HOST_IP);
while (ip != null)
{
host_atom.Remove(ip);
ip = host_atom.FindByName(Atom.PCP_HOST_IP);
}
Atom port = host_atom.FindByName(Atom.PCP_HOST_PORT);
while (port != null)
{
host_atom.Remove(port);
port = host_atom.FindByName(Atom.PCP_HOST_PORT);
}
host_atom.SetHostSessionID(node.SessionID);
var globalendpoint = node.GlobalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(globalendpoint.Address);
host_atom.AddHostPort(globalendpoint.Port);
var localendpoint = node.LocalEndPoint ?? new IPEndPoint(IPAddress.Any, 0);
host_atom.AddHostIP(localendpoint.Address);
host_atom.AddHostPort(localendpoint.Port);
host_atom.SetHostNumRelays(node.RelayCount);
host_atom.SetHostNumListeners(node.DirectCount);
host_atom.SetHostChannelID(Channel.ChannelID);
host_atom.SetHostFlags1(
(node.IsFirewalled ? PCPHostFlags1.Firewalled : PCPHostFlags1.None) |
(node.IsTracker ? PCPHostFlags1.Tracker : PCPHostFlags1.None) |
(node.IsRelayFull ? PCPHostFlags1.None : PCPHostFlags1.Relay) |
(node.IsDirectFull ? PCPHostFlags1.None : PCPHostFlags1.Direct) |
(node.IsReceiving ? PCPHostFlags1.Receiving : PCPHostFlags1.None) |
(node.IsControlFull ? PCPHostFlags1.None : PCPHostFlags1.ControlIn));
Send(new Atom(Atom.PCP_HOST, host_atom));
Logger.Debug("Sending Node: {0}({1})", globalendpoint, node.SessionID.ToString("N"));
}
Stop(StopReason.UnavailableError);
}
else
{
Logger.Debug("Handshake succeeded {0}({1})", Downhost.GlobalEndPoint, Downhost.SessionID.ToString("N"));
Send(new Atom(Atom.PCP_OK, (int)1));
}
}
