public virtual void SendPCPHelo()
{
Logger.Debug("Handshake Started");
var helo = new AtomCollection();
helo.SetHeloAgent(PeerCast.AgentName);
helo.SetHeloSessionID(PeerCast.SessionID);
if (PeerCast.IsFirewalled.HasValue)
{
if (PeerCast.IsFirewalled.Value)
{
//Do nothing
}
else
{
var listener = PeerCast.FindListener(
RemoteEndPoint.Address,
OutputStreamType.Relay | OutputStreamType.Metadata);
helo.SetHeloPort(listener.LocalEndPoint.Port);
}
}
else
{
var listener = PeerCast.FindListener(
RemoteEndPoint.Address,
OutputStreamType.Relay | OutputStreamType.Metadata);
if (listener != null)
{
helo.SetHeloPing(listener.LocalEndPoint.Port);
}
}
helo.SetHeloVersion(PCP_VERSION);
Send(new Atom(Atom.PCP_HELO, helo));
}
private void AnnounceThreadProc()
{
Logger.Debug("Thread started");
var host = Uri.DnsSafeHost;
var port = Uri.Port;
if (port < 0)
{
port = DefaultPort;
}
while (!IsStopped)
{
int next_update = Environment.TickCount;
posts.Clear();
try {
Logger.Debug("Connecting to YP");
AnnouncingStatus = AnnouncingStatus.Connecting;
using (var client = new TcpClient(host, port)) {
using (var stream = client.GetStream()) {
AtomWriter.Write(stream, new Atom(new ID4("pcp\n"), (int)1));
var helo = new AtomCollection();
Logger.Debug("Sending Handshake");
helo.SetHeloAgent(PeerCast.AgentName);
helo.SetHeloVersion(1218);
helo.SetHeloSessionID(PeerCast.SessionID);
helo.SetHeloBCID(PeerCast.BroadcastID);
if (PeerCast.IsFirewalled.HasValue)
{
if (PeerCast.IsFirewalled.Value)
{
//Do nothing
}
else
{
var listener = PeerCast.FindListener(
((IPEndPoint)client.Client.RemoteEndPoint).Address,
OutputStreamType.Relay | OutputStreamType.Metadata);
if (listener != null)
{
helo.SetHeloPort(listener.LocalEndPoint.Port);
}
}
}
else
{
var listener = PeerCast.FindListener(
((IPEndPoint)client.Client.RemoteEndPoint).Address,
OutputStreamType.Relay | OutputStreamType.Metadata);
if (listener != null)
{
helo.SetHeloPing(listener.LocalEndPoint.Port);
}
}
AtomWriter.Write(stream, new Atom(Atom.PCP_HELO, helo));
while (!IsStopped)
{
var atom = AtomReader.Read(stream);
if (atom.Name == Atom.PCP_OLEH)
{
OnPCPOleh(atom);
break;
}
else if (atom.Name == Atom.PCP_QUIT)
{
Logger.Debug("Handshake aborted by PCP_QUIT ({0})", atom.GetInt32());
throw new QuitException();
}
if (restartEvent.WaitOne(10))
{
throw new RestartException();
}
}
Logger.Debug("Handshake succeeded");
AnnouncingStatus = AnnouncingStatus.Connected;
while (!IsStopped)
{
if (next_update - Environment.TickCount <= 0)
{
Logger.Debug("Sending channel info");
lock (announcingChannels) {
foreach (var announcing in announcingChannels)
{
PostChannelBcst(announcing.Channel, true);
}
}
next_update = Environment.TickCount + 30000;
}
if (stream.DataAvailable)
{
Atom atom = AtomReader.Read(stream);
ProcessAtom(atom);
}
lock (posts) {
foreach (var atom in posts)
{
AtomWriter.Write(stream, atom);
}
posts.Clear();
}
if (restartEvent.WaitOne(10))
{
throw new RestartException();
}
}
lock (posts) {
foreach (var atom in posts)
{
AtomWriter.Write(stream, atom);
}
posts.Clear();
}
Logger.Debug("Closing connection");
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
}
}
}
catch (RestartException) {
Logger.Debug("Connection retrying");
AnnouncingStatus = AnnouncingStatus.Connecting;
}
catch (BannedException) {
AnnouncingStatus = AnnouncingStatus.Error;
Logger.Error("Your BCID is banned");
break;
}
catch (QuitException) {
AnnouncingStatus = AnnouncingStatus.Error;
}
catch (SocketException e) {
AnnouncingStatus = AnnouncingStatus.Error;
Logger.Info(e);
}
catch (IOException e) {
AnnouncingStatus = AnnouncingStatus.Error;
Logger.Info(e);
}
Logger.Debug("Connection closed");
if (!IsStopped)
{
restartEvent.WaitOne(10000);
}
else
{
AnnouncingStatus = AnnouncingStatus.Idle;
}
}
Logger.Debug("Thread finished");
}
public Uri FindTracker(Guid channel_id)
{
Logger.Debug("Finding tracker {0} from {1}", channel_id.ToString("N"), Uri);
var host = Uri.DnsSafeHost;
var port = Uri.Port;
Uri res = null;
if (port < 0)
{
port = DefaultPort;
}
try {
var client = new TcpClient(host, port);
var stream = client.GetStream();
var request = System.Text.Encoding.UTF8.GetBytes(
String.Format("GET /channel/{0} HTTP/1.0\r\n", channel_id.ToString("N")) +
"x-peercast-pcp:1\r\n" +
"\r\n");
stream.Write(request, 0, request.Length);
var response = ReadResponse(stream);
var md = System.Text.RegularExpressions.Regex.Match(response, @"^HTTP/1.\d (\d+) ");
if (md.Success)
{
var status = md.Groups[1].Value;
switch (status)
{
case "503":
var helo = new AtomCollection();
helo.SetHeloAgent(PeerCast.AgentName);
helo.SetHeloVersion(1218);
helo.SetHeloSessionID(PeerCast.SessionID);
helo.SetHeloPort(0);
AtomWriter.Write(stream, new Atom(Atom.PCP_HELO, helo));
var hosts = ReadHosts(stream, channel_id);
res = HostToUri(hosts.FirstOrDefault(h => h.IsTracker), channel_id);
break;
case "200":
//なぜかリレー可能だったのでYP自体をトラッカーとみなしてしまうことにする
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
res = Uri;
break;
default:
//エラーだったのでトラッカーのアドレスを貰えず終了
break;
}
}
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
client.Close();
}
catch (SocketException)
{
}
catch (IOException)
{
}
if (res != null)
{
Logger.Debug("Tracker found: {0}", res);
}
else
{
Logger.Debug("Tracker no found");
}
return(res);
}
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));
}
}
private void AnnounceThreadProc()
{
Logger.Debug("Thread started");
var host = Uri.DnsSafeHost;
var port = Uri.Port;
if (port<0) port = PCPVersion.DefaultPort;
while (!IsStopped) {
int next_update = Environment.TickCount;
posts.Clear();
try {
Logger.Debug("Connecting to YP");
AnnouncingStatus = AnnouncingStatus.Connecting;
using (var client = new TcpClient(host, port)) {
remoteEndPoint = (IPEndPoint)client.Client.RemoteEndPoint;
using (var stream = client.GetStream()) {
AtomWriter.Write(stream, new Atom(new ID4("pcp\n"), (int)1));
var helo = new AtomCollection();
Logger.Debug("Sending Handshake");
helo.SetHeloAgent(PeerCast.AgentName);
helo.SetHeloVersion(1218);
helo.SetHeloSessionID(PeerCast.SessionID);
helo.SetHeloBCID(PeerCast.BroadcastID);
if (PeerCast.IsFirewalled.HasValue) {
if (PeerCast.IsFirewalled.Value) {
//Do nothing
}
else {
var listener = PeerCast.FindListener(
((IPEndPoint)client.Client.RemoteEndPoint).Address,
OutputStreamType.Relay | OutputStreamType.Metadata);
if (listener!=null) {
helo.SetHeloPort(listener.LocalEndPoint.Port);
}
}
}
else {
var listener = PeerCast.FindListener(
((IPEndPoint)client.Client.RemoteEndPoint).Address,
OutputStreamType.Relay | OutputStreamType.Metadata);
if (listener!=null) {
helo.SetHeloPing(listener.LocalEndPoint.Port);
}
}
AtomWriter.Write(stream, new Atom(Atom.PCP_HELO, helo));
while (!IsStopped) {
var atom = AtomReader.Read(stream);
if (atom.Name==Atom.PCP_OLEH) {
OnPCPOleh(atom);
break;
}
else if (atom.Name==Atom.PCP_QUIT) {
Logger.Debug("Handshake aborted by PCP_QUIT ({0})", atom.GetInt32());
throw new QuitException();
}
if (restartEvent.WaitOne(10)) throw new RestartException();
}
Logger.Debug("Handshake succeeded");
AnnouncingStatus = AnnouncingStatus.Connected;
while (!IsStopped) {
if (next_update-Environment.TickCount<=0) {
Logger.Debug("Sending channel info");
lock (announcingChannels) {
foreach (var announcing in announcingChannels) {
PostChannelBcst(announcing.Channel, true);
}
}
next_update = Environment.TickCount+30000;
}
if (stream.DataAvailable) {
Atom atom = AtomReader.Read(stream);
ProcessAtom(atom);
}
lock (posts) {
foreach (var atom in posts) {
AtomWriter.Write(stream, atom);
}
posts.Clear();
}
if (restartEvent.WaitOne(10)) throw new RestartException();
}
lock (posts) {
foreach (var atom in posts) {
AtomWriter.Write(stream, atom);
}
posts.Clear();
}
Logger.Debug("Closing connection");
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
}
}
}
catch (RestartException) {
Logger.Debug("Connection retrying");
AnnouncingStatus = AnnouncingStatus.Connecting;
}
catch (BannedException) {
AnnouncingStatus = AnnouncingStatus.Error;
Logger.Error("Your BCID is banned");
break;
}
catch (QuitException) {
AnnouncingStatus = AnnouncingStatus.Error;
}
catch (SocketException e) {
AnnouncingStatus = AnnouncingStatus.Error;
Logger.Info(e);
}
catch (IOException e) {
AnnouncingStatus = AnnouncingStatus.Error;
Logger.Info(e);
}
finally {
remoteEndPoint = null;
}
Logger.Debug("Connection closed");
if (!IsStopped) {
restartEvent.WaitOne(10000);
}
else {
AnnouncingStatus = AnnouncingStatus.Idle;
}
}
Logger.Debug("Thread finished");
}
public Uri FindTracker(Guid channel_id)
{
Logger.Debug("Finding tracker {0} from {1}", channel_id.ToString("N"), Uri);
var host = Uri.DnsSafeHost;
var port = Uri.Port;
Uri res = null;
if (port<0) port = PCPVersion.DefaultPort;
try {
var client = new TcpClient(host, port);
var stream = client.GetStream();
var request = System.Text.Encoding.UTF8.GetBytes(
String.Format("GET /channel/{0} HTTP/1.0\r\n", channel_id.ToString("N")) +
"x-peercast-pcp:1\r\n" +
"\r\n");
stream.Write(request, 0, request.Length);
var response = ReadResponse(stream);
var md = System.Text.RegularExpressions.Regex.Match(response, @"^HTTP/1.\d (\d+) ");
if (md.Success) {
var status = md.Groups[1].Value;
switch (status) {
case "503":
var helo = new AtomCollection();
helo.SetHeloAgent(PeerCast.AgentName);
helo.SetHeloVersion(1218);
helo.SetHeloSessionID(PeerCast.SessionID);
helo.SetHeloPort(0);
AtomWriter.Write(stream, new Atom(Atom.PCP_HELO, helo));
var hosts = ReadHosts(stream, channel_id);
res = HostToUri(hosts.FirstOrDefault(h => h.IsTracker), channel_id);
break;
case "200":
//なぜかリレー可能だったのでYP自体をトラッカーとみなしてしまうことにする
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
res = Uri;
break;
default:
//エラーだったのでトラッカーのアドレスを貰えず終了
break;
}
}
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
client.Close();
}
catch (SocketException)
{
}
catch (IOException)
{
}
if (res!=null) {
Logger.Debug("Tracker found: {0}", res);
}
else {
Logger.Debug("Tracker no found");
}
return res;
}
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));
}
}
