protected virtual bool PingHost(IPEndPoint target, Guid remote_session_id)
{
Logger.Debug("Ping requested. Try to ping: {0}({1})", target, remote_session_id);
bool result = false;
try {
var client = new System.Net.Sockets.TcpClient();
client.Connect(target);
client.ReceiveTimeout = 3000;
client.SendTimeout = 3000;
var stream = client.GetStream();
var conn = new Atom(Atom.PCP_CONNECT, 1);
AtomWriter.Write(stream, conn);
var helo = new AtomCollection();
helo.SetHeloSessionID(PeerCast.SessionID);
AtomWriter.Write(stream, new Atom(Atom.PCP_HELO, helo));
var res = AtomReader.Read(stream);
if (res.Name == Atom.PCP_OLEH)
{
var session_id = res.Children.GetHeloSessionID();
if (session_id.HasValue && session_id.Value == remote_session_id)
{
Logger.Debug("Ping succeeded");
result = true;
}
else
{
Logger.Debug("Ping failed. Remote SessionID mismatched");
}
}
AtomWriter.Write(stream, new Atom(Atom.PCP_QUIT, Atom.PCP_ERROR_QUIT));
stream.Close();
client.Close();
}
catch (InvalidDataException e) {
Logger.Debug("Ping failed");
Logger.Debug(e);
}
catch (System.Net.Sockets.SocketException e) {
Logger.Debug("Ping failed");
Logger.Debug(e);
}
catch (EndOfStreamException e) {
Logger.Debug("Ping failed");
Logger.Debug(e);
}
catch (System.IO.IOException io_error) {
Logger.Debug("Ping failed");
Logger.Debug(io_error);
if (!(io_error.InnerException is System.Net.Sockets.SocketException))
{
throw;
}
}
return(result);
}
protected override void DoPost(Host from, Atom packet)
{
if (uphost != from)
{
try {
connection.Send(stream => {
AtomWriter.Write(stream, packet);
});
}
catch (IOException e) {
Logger.Info(e);
Stop(StopReason.ConnectionError);
}
}
}
private bool SendPCPHelo()
{
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);
}
}
PCPVersion.SetHeloVersion(helo);
try {
connection.Send(stream => {
AtomWriter.Write(stream, new Atom(Atom.PCP_HELO, helo));
});
}
catch (IOException e) {
Logger.Info(e);
Stop(StopReason.ConnectionError);
return(false);
}
return(true);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="WebResponse"/>.
/// </summary>
/// <param name="response">The <see cref="HttpWebResponse"/> to write to.</param>
public void Save(WebResponse response)
{
_writer = new AtomWriter(response.ResponseUri.ToString(), this.Encoding);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="TextWriter"/>.
/// </summary>
/// <param name="xw">The <see cref="XmlWriter"/> to write to.</param>
public void Save(XmlWriter xw)
{
_writer = new AtomWriter(xw);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="TextWriter"/>.
/// </summary>
/// <param name="tw">The <see cref="TextWriter"/> to write to.</param>
public void Save(TextWriter tw)
{
_writer = new AtomWriter(tw);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified filename.
/// </summary>
/// <exception cref="ArgumentException">The encoding is not supported; the filename is empty, contains only white space, or contains one or more invalid characters.</exception>
/// <exception cref="UnauthorizedAccessException">Access is denied.</exception>
/// <exception cref="ArgumentNullException">The filename is a null reference.</exception>
/// <exception cref="DirectoryNotFoundException">The directory to write to is not found.</exception>
/// <exception cref="IOException">The filename includes an incorrect or invalid syntax for file name, directory name, or volume label syntax.</exception>
/// <exception cref="System.Security.SecurityException">The caller does not have the required permission.</exception>
/// <param name="filename">The file name to write to.</param>
public void Save(string filename)
{
_writer = new AtomWriter(filename, this.Encoding);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="Stream"/>.
/// </summary>
/// <param name="stream">The <see cref="Stream"/> to write to.</param>
/// <exception cref="ArgumentException">The encoding is not supported or the stream cannot be written to.</exception>
/// <exception cref="ArgumentNullException">stream is null.</exception>
/// <exception cref="RequiredElementNotFoundException">A required element is not found.</exception>
/// <exception cref="InvalidOperationException">The internal writ</exception>
public void Save(Stream stream)
{
_writer = new AtomWriter(stream, this.Encoding);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="WebResponse"/>.
/// </summary>
/// <param name="response">The <see cref="HttpWebResponse"/> to write to.</param>
public void Save(WebResponse response)
{
_writer = new AtomWriter(response.ResponseUri.ToString(), this.Encoding);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="TextWriter"/>.
/// </summary>
/// <param name="xw">The <see cref="XmlWriter"/> to write to.</param>
public void Save(XmlWriter xw)
{
_writer = new AtomWriter(xw);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="TextWriter"/>.
/// </summary>
/// <param name="tw">The <see cref="TextWriter"/> to write to.</param>
public void Save(TextWriter tw)
{
_writer = new AtomWriter(tw);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified filename.
/// </summary>
/// <exception cref="ArgumentException">The encoding is not supported; the filename is empty, contains only white space, or contains one or more invalid characters.</exception>
/// <exception cref="UnauthorizedAccessException">Access is denied.</exception>
/// <exception cref="ArgumentNullException">The filename is a null reference.</exception>
/// <exception cref="DirectoryNotFoundException">The directory to write to is not found.</exception>
/// <exception cref="IOException">The filename includes an incorrect or invalid syntax for file name, directory name, or volume label syntax.</exception>
/// <exception cref="System.Security.SecurityException">The caller does not have the required permission.</exception>
/// <param name="filename">The file name to write to.</param>
public void Save(string filename)
{
_writer = new AtomWriter(filename, this.Encoding);
_writer.Write(this);
}
/// <summary>
/// Saves the <see cref="AtomEntry"/> to the specified <see cref="Stream"/>.
/// </summary>
/// <param name="stream">The <see cref="Stream"/> to write to.</param>
/// <exception cref="ArgumentException">The encoding is not supported or the stream cannot be written to.</exception>
/// <exception cref="ArgumentNullException">stream is null.</exception>
/// <exception cref="RequiredElementNotFoundException">A required element is not found.</exception>
/// <exception cref="InvalidOperationException">The internal writ</exception>
public void Save(Stream stream)
{
_writer = new AtomWriter(stream, this.Encoding);
_writer.Write(this);
}
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);
}
