protected void OnPCPOleh(Atom atom)
{
var rip = atom.Children.GetHeloRemoteIP();
if (rip!=null) {
switch (rip.AddressFamily) {
case AddressFamily.InterNetwork:
if (PeerCast.GlobalAddress==null ||
PeerCast.GlobalAddress.GetAddressLocality()<=rip.GetAddressLocality()) {
PeerCast.GlobalAddress = rip;
}
break;
case AddressFamily.InterNetworkV6:
if (PeerCast.GlobalAddress6==null ||
PeerCast.GlobalAddress6.GetAddressLocality()<=rip.GetAddressLocality()) {
PeerCast.GlobalAddress6 = rip;
}
break;
}
}
var port = atom.Children.GetHeloPort();
if (port.HasValue) {
PeerCast.IsFirewalled = port.Value==0;
}
var sid = atom.Children.GetHeloSessionID();
if (sid.HasValue) {
var host = new HostBuilder();
host.SessionID = sid.Value;
host.GlobalEndPoint = RemoteEndPoint;
uphost = host.ToHost();
}
}
private void OnPCPHost(Atom atom)
{
var session_id = atom.Children.GetHostSessionID();
if (session_id!=null) {
var node = Channel.SourceNodes.FirstOrDefault(x => x.SessionID.Equals(session_id));
var host = new HostBuilder(node);
if (node==null) {
host.SessionID = (Guid)session_id;
}
host.Extra.Update(atom.Children);
host.DirectCount = atom.Children.GetHostNumListeners() ?? 0;
host.RelayCount = atom.Children.GetHostNumRelays() ?? 0;
var flags1 = atom.Children.GetHostFlags1();
if (flags1 != null) {
host.IsFirewalled = (flags1.Value & PCPHostFlags1.Firewalled) != 0;
host.IsTracker = (flags1.Value & PCPHostFlags1.Tracker) != 0;
host.IsRelayFull = (flags1.Value & PCPHostFlags1.Relay) == 0;
host.IsDirectFull = (flags1.Value & PCPHostFlags1.Direct) == 0;
host.IsReceiving = (flags1.Value & PCPHostFlags1.Receiving) != 0;
host.IsControlFull = (flags1.Value & PCPHostFlags1.ControlIn) == 0;
}
var endpoints = atom.Children.GetHostEndPoints();
if (endpoints.Length>0 && (host.GlobalEndPoint==null || !host.GlobalEndPoint.Equals(endpoints[0]))) {
host.GlobalEndPoint = endpoints[0];
}
if (endpoints.Length>1 && (host.LocalEndPoint==null || !host.LocalEndPoint.Equals(endpoints[1]))) {
host.LocalEndPoint = endpoints[1];
}
Channel.AddSourceNode(host.ToHost());
}
}
protected virtual void OnPCPHost(Atom atom)
{
var session_id = atom.Children.GetHostSessionID();
if (session_id!=null) {
var node = Channel.Nodes.FirstOrDefault(x => x.SessionID.Equals(session_id));
HostBuilder host = new HostBuilder(node);
if (node==null) {
host.SessionID = (Guid)session_id;
}
host.Extra.Update(atom.Children);
host.DirectCount = atom.Children.GetHostNumListeners() ?? 0;
host.RelayCount = atom.Children.GetHostNumRelays() ?? 0;
var flags1 = atom.Children.GetHostFlags1();
if (flags1 != null) {
host.IsFirewalled = (flags1.Value & PCPHostFlags1.Firewalled) != 0;
host.IsTracker = (flags1.Value & PCPHostFlags1.Tracker) != 0;
host.IsRelayFull = (flags1.Value & PCPHostFlags1.Relay) == 0;
host.IsDirectFull = (flags1.Value & PCPHostFlags1.Direct) == 0;
host.IsReceiving = (flags1.Value & PCPHostFlags1.Receiving) != 0;
host.IsControlFull = (flags1.Value & PCPHostFlags1.ControlIn) == 0;
}
var endpoints = atom.Children.GetHostEndPoints();
if (endpoints.Length>0 && (host.GlobalEndPoint==null || !host.GlobalEndPoint.Equals(endpoints[0]))) {
host.GlobalEndPoint = endpoints[0];
}
if (endpoints.Length>1 && (host.LocalEndPoint==null || !host.LocalEndPoint.Equals(endpoints[1]))) {
host.LocalEndPoint = endpoints[1];
}
Logger.Debug("Updating Node: {0}/{1}({2})", host.GlobalEndPoint, host.LocalEndPoint, host.SessionID.ToString("N"));
Channel.AddNode(host.ToHost());
if (Downhost.SessionID==host.SessionID) Downhost = host.ToHost();
}
}
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();
UserAgent = atom.Children.GetHeloAgent() ?? UserAgent;
}
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);
PCPVersion.SetHeloVersion(oleh);
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"));
Stop(StopReason.UnavailableError);
}
else {
Logger.Debug("Handshake succeeded {0}({1})", Downhost.GlobalEndPoint, Downhost.SessionID.ToString("N"));
Send(new Atom(Atom.PCP_OK, (int)1));
}
}
/// <summary>
/// 指定されたHostBuilderの値でHostBuilderを初期化します
/// </summary>
/// <param name="host">初期化元のHostBuilder</param>
public HostBuilder(HostBuilder host)
{
if (host!=null) {
SessionID = host.SessionID;
BroadcastID = host.BroadcastID;
LocalEndPoint = host.LocalEndPoint;
GlobalEndPoint = host.GlobalEndPoint;
RelayCount = host.RelayCount;
DirectCount = host.DirectCount;
IsFirewalled = host.IsFirewalled;
IsTracker = host.IsTracker;
IsRelayFull = host.IsRelayFull;
IsDirectFull = host.IsDirectFull;
IsReceiving = host.IsReceiving;
IsControlFull = host.IsControlFull;
Extensions = new List<string>(host.Extensions);
Extra = new AtomCollection(host.Extra);
}
else {
SessionID = Guid.Empty;
BroadcastID = Guid.Empty;
LocalEndPoint = null;
GlobalEndPoint = null;
RelayCount = 0;
DirectCount = 0;
IsFirewalled = false;
IsTracker = false;
IsRelayFull = false;
IsDirectFull = false;
IsReceiving = false;
IsControlFull = false;
Extensions = new List<string>();
Extra = new AtomCollection();
}
}
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 List<Host> ReadHosts(Stream s, Guid channel_id)
{
var res = new List<Host>();
bool quit = false;
while (!quit) {
var atom = AtomReader.Read(s);
if (atom.Name==Atom.PCP_HOST) {
if (atom.Children.GetHostChannelID()==channel_id) {
var host = new HostBuilder();
var endpoints = atom.Children.GetHostEndPoints();
if (endpoints.Length>0) host.GlobalEndPoint = endpoints[0];
if (endpoints.Length>1) host.LocalEndPoint = endpoints[1];
host.DirectCount = atom.Children.GetHostNumListeners() ?? 0;
host.RelayCount = atom.Children.GetHostNumRelays() ?? 0;
host.SessionID = atom.Children.GetHostSessionID() ?? Guid.Empty;
if (atom.Children.GetHostFlags1().HasValue) {
var flags = atom.Children.GetHostFlags1().Value;
host.IsControlFull = (flags & PCPHostFlags1.ControlIn)!=0;
host.IsFirewalled = (flags & PCPHostFlags1.Firewalled)!=0;
host.IsDirectFull = (flags & PCPHostFlags1.Direct)==0;
host.IsRelayFull = (flags & PCPHostFlags1.Relay)==0;
host.IsReceiving = (flags & PCPHostFlags1.Receiving)!=0;
host.IsTracker = (flags & PCPHostFlags1.Tracker)!=0;
}
res.Add(host.ToHost());
}
}
if (atom.Name==Atom.PCP_QUIT) {
quit = true;
}
}
return res;
}
