made most client relay handshake code

sp-relay/src/main/java/net/lax1dude/eaglercraft/sp/relay/EaglerSPRelay.java

@@ -82,7 +82,7 @@ public class EaglerSPRelay extends WebSocketServer {
 						Iterator<EaglerSPClient> itr = clientConnections.values().iterator();
 						while(itr.hasNext()) {
 							EaglerSPClient cl = itr.next();
-							if(millis - cl.createdOn > 5000l) {
+							if(millis - cl.createdOn > 6900l) {
 								cl.disconnect(IPacketFEDisconnectClient.TYPE_TIMEOUT, "Took too long to connect!");
 							}
 						}

src/main/java/net/lax1dude/eaglercraft/LANClientNetworkManager.java

@@ -0,0 +1,196 @@
+package net.lax1dude.eaglercraft;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket00Handshake;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket01ICEServers;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket03ICECandidate;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket04Description;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacketFFErrorCode;
+import net.minecraft.src.INetworkManager;
+import net.minecraft.src.LoadingScreenRenderer;
+import net.minecraft.src.NetHandler;
+import net.minecraft.src.Packet;
+
+public class LANClientNetworkManager implements INetworkManager {
+
+	private static final int PRE = 0, INIT = 1, SENT_ICE_CANDIDATE = 2, SENT_DESCRIPTION = 3;
+	
+	private static final String[] initStateNames = new String[] { "PRE", "INIT", "SENT_ICE_CANDIDATE", "SENT_DESCRIPTION" };
+	
+	public final String displayCode;
+	public final String displayRelay;
+	
+	private LANClientNetworkManager(String displayCode, String displayRelay) {
+		this.displayCode = displayCode;
+		this.displayRelay = displayRelay;
+	}
+	
+	public static LANClientNetworkManager connectToWorld(RelayServerSocket sock, LoadingScreenRenderer loadingScreen,
+			String displayCode, String displayRelay) {
+		EaglerAdapter.clearLANClientState();
+		loadingScreen.displayProgressMessage("Connecting to '" + displayCode + "' via " + displayRelay + "...");
+		int connectState = -1;
+		IPacket pkt;
+		mainLoop: while(!sock.isClosed()) {
+			if((pkt = sock.readPacket()) != null) {
+				if(pkt instanceof IPacket00Handshake) {
+					if(connectState == PRE) {
+						System.out.println("Relay [" + displayRelay + "|" + displayCode + "] recieved handshake, "
+								+ "client id: " + ((IPacket00Handshake)pkt).connectionCode);
+						connectState = INIT;
+					}else {
+						sock.close();
+						System.err.println("Relay [" + displayRelay + "|" + displayCode + "] unexpected packet: "
+								+ "IPacket00Handshake in state " + initStateNames[connectState]);
+						return null;
+					}
+				}else if(pkt instanceof IPacket01ICEServers) {
+					if(connectState == INIT) {
+						IPacket01ICEServers ipkt = (IPacket01ICEServers) pkt;
+						System.out.println("Relay [" + displayRelay + "|" + displayCode + "] provided ICE servers:");
+						List<String> servers = new ArrayList();
+						for(net.lax1dude.eaglercraft.sp.relay.pkt.ICEServerSet.RelayServer srv : ipkt.servers) {
+							System.out.println("Relay [" + displayRelay + "|" + displayCode + "]     " + srv.type.name()
+									+ ": " + srv.address);
+							servers.add(srv.getICEString());
+						}
+						EaglerAdapter.clientLANSetICEServersAndConnect(servers.toArray(new String[servers.size()]));
+						long lm = System.currentTimeMillis();
+						do {
+							String c = EaglerAdapter.clientLANAwaitICECandidate();
+							if(c != null) {
+								System.out.println("Relay [" + displayRelay + "|" + displayCode + "] client sent ICE candidate");
+								sock.writePacket(new IPacket03ICECandidate("", c));
+								connectState = SENT_ICE_CANDIDATE;
+								continue mainLoop;
+							}
+						}while(System.currentTimeMillis() - lm > 3000l);
+						sock.close();
+						System.err.println("Relay [" + displayRelay + "|" + displayCode + "] client provide ICE candidate timeout");
+						return null;
+					}else {
+						sock.close();
+						System.err.println("Relay [" + displayRelay + "|" + displayCode + "] unexpected packet: "
+								+ "IPacket01ICEServers in state " + initStateNames[connectState]);
+						return null;
+					}
+				}else if(pkt instanceof IPacket03ICECandidate) {
+					if(connectState == SENT_ICE_CANDIDATE) {
+						IPacket03ICECandidate ipkt = (IPacket03ICECandidate) pkt;
+						System.out.println("Relay [" + displayRelay + "|" + displayCode + "] recieved server ICE candidate");
+						EaglerAdapter.clientLANSetICECandidate(ipkt.candidate);
+						long lm = System.currentTimeMillis();
+						do {
+							String c = EaglerAdapter.clientLANAwaitDescription();
+							if(c != null) {
+								System.out.println("Relay [" + displayRelay + "|" + displayCode + "] client sent description");
+								sock.writePacket(new IPacket04Description("", c));
+								connectState = SENT_DESCRIPTION;
+								continue mainLoop;
+							}
+						}while(System.currentTimeMillis() - lm > 3000l);
+						sock.close();
+						System.err.println("Relay [" + displayRelay + "|" + displayCode + "] client provide description timeout");
+						return null;
+					}else {
+						sock.close();
+						System.err.println("Relay [" + displayRelay + "|" + displayCode + "] unexpected packet: "
+								+ "IPacket03ICECandidate in state " + initStateNames[connectState]);
+						return null;
+					}
+				}else if(pkt instanceof IPacket04Description) {
+					if(connectState == SENT_DESCRIPTION) {
+						IPacket03ICECandidate ipkt = (IPacket03ICECandidate) pkt;
+						System.out.println("Relay [" + displayRelay + "|" + displayCode + "] recieved server description");
+						EaglerAdapter.clientLANSetDescription(ipkt.candidate);
+						
+						// TODO: handle description, return packet 05 or 06
+						
+					}else {
+						sock.close();
+						System.err.println("Relay [" + displayRelay + "|" + displayCode + "] unexpected packet: "
+								+ "IPacket04Description in state " + initStateNames[connectState]);
+						return null;
+					}
+				}else if(pkt instanceof IPacketFFErrorCode) {
+					IPacketFFErrorCode ipkt = (IPacketFFErrorCode) pkt;
+					System.err.println("Relay [" + displayRelay + "|" + displayCode + "] connection failed: " +
+							IPacketFFErrorCode.code2string(ipkt.code) + "(" + ipkt.code + "): " + ipkt.desc);
+					Throwable t;
+					while((t = sock.getException()) != null) {
+						t.printStackTrace();
+					}
+					sock.close();
+					return null;
+				}else {
+					System.err.println("Relay [" + displayRelay + "] unexpected packet: " + pkt.getClass().getSimpleName());
+					sock.close();
+					return null;
+				}
+			}
+			try {
+				Thread.sleep(20l);
+			} catch (InterruptedException e) {
+			}
+		}
+		return null;
+	}
+
+	@Override
+	public void setNetHandler(NetHandler var1) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void addToSendQueue(Packet var1) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void wakeThreads() {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void processReadPackets() {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void serverShutdown() {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public int packetSize() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	@Override
+	public void networkShutdown(String var1, Object... var2) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void closeConnections() {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public String getServerURI() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+}

src/main/java/net/lax1dude/eaglercraft/RelayManager.java

@@ -1,9 +1,13 @@
 package net.lax1dude.eaglercraft;
 
 import java.util.ArrayList;
+import java.util.LinkedList;
 import java.util.List;
 import java.util.function.Consumer;
 
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacket00Handshake;
+import net.lax1dude.eaglercraft.sp.relay.pkt.IPacketFFErrorCode;
 import net.minecraft.src.NBTBase;
 import net.minecraft.src.NBTTagCompound;
 import net.minecraft.src.NBTTagList;
@@ -180,44 +184,100 @@ public class RelayManager {
 		}
 	}
 	
-	public RelayServer getWorkingRelay(Consumer<String> progressCallback) {
+	private RelayServerSocket connectHandshake(RelayServer relay, int type, String code) {
+		RelayServerSocket sock = relay.openSocket();
+		while(!sock.isClosed()) {
+			if(sock.isOpen()) {
+				sock.writePacket(new IPacket00Handshake(type, IntegratedServer.preferredRelayVersion, code));
+				while(!sock.isClosed()) {
+					IPacket pkt = sock.nextPacket();
+					if(pkt != null) {
+						if(pkt instanceof IPacket00Handshake) {
+							return sock;
+						}else if(pkt instanceof IPacketFFErrorCode) {
+							IPacketFFErrorCode ipkt = (IPacketFFErrorCode) pkt;
+							System.err.println("Relay [" + relay.address + "] failed: " + IPacketFFErrorCode.code2string(ipkt.code) +
+									"(" + ipkt.code + "): " + ipkt.desc);
+							Throwable t;
+							while((t = sock.getException()) != null) {
+								t.printStackTrace();
+							}
+							sock.close();
+							return null;
+						}else {
+							System.err.println("Relay [" + relay.address + "] unexpected packet: " + pkt.getClass().getSimpleName());
+							sock.close();
+							return null;
+						}
+					}
+					try {
+						Thread.sleep(20l);
+					} catch (InterruptedException e) {
+					}
+				}
+			}
+			try {
+				Thread.sleep(20l);
+			} catch (InterruptedException e) {
+			}
+		}
+		System.err.println("Relay [" + relay.address + "] connection failed!");
+		Throwable t;
+		while((t = sock.getException()) != null) {
+			t.printStackTrace();
+		}
+		return null;
+	}
+	
+	private final List<RelayServer> brokenServers = new LinkedList();
+
+	public RelayServerSocket getWorkingRelay(Consumer<String> progressCallback, int type, String code) {
+		brokenServers.clear();
 		if(relays.size() > 0) {
 			long millis = System.currentTimeMillis();
-			if(millis - lastPingThrough > 10000l) {
+			if(millis - lastPingThrough < 10000l) {
 				RelayServer relay = getPrimary();
 				if(relay.getPing() > 0l && relay.getPingCompatible().isCompatible()) {
-					return relay;
+					progressCallback.accept(relay.address);
+					RelayServerSocket sock = connectHandshake(relay, type, code);
+					if(sock != null) {
+						return sock;
+					}else {
+						brokenServers.add(relay);
+					}
 				}
 				for(int i = 0, l = relays.size(); i < l; ++i) {
 					RelayServer relayEtr = relays.get(i);
 					if(relayEtr != relay) {
 						if(relayEtr.getPing() > 0l && relayEtr.getPingCompatible().isCompatible()) {
-							return relayEtr;
+							progressCallback.accept(relayEtr.address);
+							RelayServerSocket sock = connectHandshake(relayEtr, type, code);
+							if(sock != null) {
+								return sock;
+							}else {
+								brokenServers.add(relayEtr);
+							}
 						}
 					}
 				}
 			}
-			return getWorkingRelayActive(progressCallback);
+			return getWorkingCodeRelayActive(progressCallback, type, code);
 		}else {
 			return null;
 		}
 	}
 	
-	private RelayServer getWorkingRelayActive(Consumer<String> progressCallback) {
+	private RelayServerSocket getWorkingCodeRelayActive(Consumer<String> progressCallback, int type, String code) {
 		if(relays.size() > 0) {
-			RelayServer relay = getPrimary();
-			progressCallback.accept(relay.address);
-			relay.pingBlocking();
-			if(relay.getPing() > 0l && relay.getPingCompatible().isCompatible()) {
-				return relay;
-			}
 			for(int i = 0, l = relays.size(); i < l; ++i) {
-				RelayServer relayEtr = relays.get(i);
+				RelayServer srv = relays.get(i);
-				if(relayEtr != relay) {
+				if(!brokenServers.contains(srv)) {
-					progressCallback.accept(relayEtr.address);
+					progressCallback.accept(srv.address);
-					relayEtr.pingBlocking();
+					RelayServerSocket sock = connectHandshake(srv, type, code);
-					if(relayEtr.getPing() > 0l && relayEtr.getPingCompatible().isCompatible()) {
+					if(sock != null) {
-						return relayEtr;
+						return sock;
+					}else {
+						brokenServers.add(srv);
 					}
 				}
 			}

src/main/java/net/lax1dude/eaglercraft/RelayServer.java

@@ -15,6 +15,7 @@ public class RelayServer {
 	private VersionMismatch queriedCompatible;
 	private long ping = 0l;
 	private long workingPing = 0l;
+	public long lastPing = 0l;
 
 	public RelayServer(String address, String comment, boolean primary) {
 		this.address = address;
@@ -95,6 +96,7 @@ public class RelayServer {
 				queriedCompatible = query.getCompatible();
 				workingPing = ping;
 			}
+			lastPing = System.currentTimeMillis();
 			query = null;
 		}
 	}
@@ -111,4 +113,8 @@ public class RelayServer {
 		}
 	}
 	
+	public RelayServerSocket openSocket() {
+		return EaglerAdapter.openRelayConnection(address);
+	}
+	
 }

src/main/java/net/lax1dude/eaglercraft/RelayServerSocket.java

@@ -15,6 +15,7 @@ public interface RelayServerSocket {
 	void writePacket(IPacket pkt);
 	
 	IPacket readPacket();
+	IPacket nextPacket();
 	
 	RateLimit getRatelimitHistory();
 	

src/main/java/net/lax1dude/eaglercraft/sp/relay/pkt/ICEServerSet.java

@@ -26,6 +26,16 @@ public class ICEServerSet {
 			this.username = null;
 			this.password = null;
 		}
+
+		public String getICEString() {
+			if(type == RelayType.STUN) {
+				return address;
+			}else if(type == RelayType.TURN) {
+				return address + ";" + username + ";" + password;
+			}else {
+				throw new IllegalStateException("Unknown relay type: " + (type == null ? "null" : type.name()));
+			}
+		}
 		
 	}
 	

src/main/java/net/lax1dude/eaglercraft/sp/relay/pkt/IPacketFFErrorCode.java

@@ -15,6 +15,27 @@ public class IPacketFFErrorCode extends IPacket {
 	public static final int TYPE_SERVER_DISCONNECTED = 0x06;
 	public static final int TYPE_UNKNOWN_CLIENT = 0x07;
 	
+	public static final String[] packetTypes = new String[0x08];
+	
+	static {
+		packetTypes[TYPE_INTERNAL_ERROR] = "TYPE_INTERNAL_ERROR";
+		packetTypes[TYPE_PROTOCOL_VERSION] = "TYPE_PROTOCOL_VERSION";
+		packetTypes[TYPE_INVALID_PACKET] = "TYPE_INVALID_PACKET";
+		packetTypes[TYPE_ILLEGAL_OPERATION] = "TYPE_ILLEGAL_OPERATION";
+		packetTypes[TYPE_CODE_LENGTH] = "TYPE_CODE_LENGTH";
+		packetTypes[TYPE_INCORRECT_CODE] = "TYPE_INCORRECT_CODE";
+		packetTypes[TYPE_SERVER_DISCONNECTED] = "TYPE_SERVER_DISCONNECTED";
+		packetTypes[TYPE_UNKNOWN_CLIENT] = "TYPE_UNKNOWN_CLIENT";
+	}
+	
+	public static String code2string(int i) {
+		if(i >= 0 || i < packetTypes.length) {
+			return packetTypes[i];
+		}else {
+			return "UNKNOWN";
+		}
+	}
+	
 	public int code;
 	public String desc;
 	

src/teavm/java/net/lax1dude/eaglercraft/adapter/EaglerAdapterImpl2.java

@@ -3578,6 +3578,15 @@ public class EaglerAdapterImpl2 {
 				return null;
 			}
 		}
+
+		@Override
+		public IPacket nextPacket() {
+			if(packets.size() > 0) {
+				return packets.get(0);
+			}else {
+				return null;
+			}
+		}
 		
 		@Override
 		public RateLimit getRatelimitHistory() {
@@ -3632,6 +3641,11 @@ public class EaglerAdapterImpl2 {
 		public IPacket readPacket() {
 			return null;
 		}
+
+		@Override
+		public IPacket nextPacket() {
+			return null;
+		}
 		
 		@Override
 		public RateLimit getRatelimitHistory() {
@@ -3670,6 +3684,9 @@ public class EaglerAdapterImpl2 {
 	public static final int LAN_CLIENT_CONNECTING = 1;
 	public static final int LAN_CLIENT_CONNECTED = 2;
 	
+	private static String clientICECandidate = null;
+	private static String clientDescription = null;
+	
 	public static final boolean clientLANSupported() {
 		return rtcLANClient.LANClientSupported();
 	}
@@ -3680,13 +3697,13 @@ public class EaglerAdapterImpl2 {
 			rtcLANClient.setDescriptionHandler(new EaglercraftLANClient.DescriptionHandler() {
 				@Override
 				public void call(String description) {
-
+					clientDescription = description;
 				}
 			});
 			rtcLANClient.setICECandidateHandler(new EaglercraftLANClient.ICECandidateHandler() {
 				@Override
 				public void call(String candidate) {
-
+					clientICECandidate = candidate;
 				}
 			});
 			rtcLANClient.setRemoteDataChannelHandler(new EaglercraftLANClient.ClientSignalHandler() {
@@ -3734,6 +3751,43 @@ public class EaglerAdapterImpl2 {
 		return clientLANPacketBuffer.size() > 0 ? clientLANPacketBuffer.remove(0) : null;
 	}
 	
+	public static final void clientLANSetICEServersAndConnect(String[] servers) {
+		rtcLANClient.setICEServers(servers);
+	}
+	
+	public static final void clearLANClientState() {
+		clientICECandidate = null;
+		clientDescription = null;
+	}
+	
+	public static final String clientLANAwaitICECandidate() {
+		if(clientICECandidate != null) {
+			String ret = clientICECandidate;
+			clientICECandidate = null;
+			return ret;
+		}else {
+			return null;
+		}
+	}
+	
+	public static final String clientLANAwaitDescription() {
+		if(clientDescription != null) {
+			String ret = clientDescription;
+			clientDescription = null;
+			return ret;
+		}else {
+			return null;
+		}
+	}
+	
+	public static final void clientLANSetICECandidate(String candidate) {
+		rtcLANClient.signalRemoteICECandidate(candidate);
+	}
+	
+	public static final void clientLANSetDescription(String description) {
+		rtcLANClient.signalRemoteDescription(description);
+	}
+	
 	private static EaglercraftLANServer rtcLANServer = null;
 
 	@JSBody(params = { }, script = "return window.startLANServer();")