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183 changes: 183 additions & 0 deletions
183
core/src/main/java/moe/kyokobot/koe/gateway/VoiceGatewayV5Connection.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,183 @@ | ||
| package moe.kyokobot.koe.gateway; | ||
|
|
||
| import moe.kyokobot.koe.VoiceServerInfo; | ||
| import moe.kyokobot.koe.crypto.EncryptionMode; | ||
| import moe.kyokobot.koe.internal.VoiceConnectionImpl; | ||
| import moe.kyokobot.koe.internal.handler.DiscordUDPConnection; | ||
| import moe.kyokobot.koe.internal.json.JsonArray; | ||
| import moe.kyokobot.koe.internal.json.JsonObject; | ||
| import org.jetbrains.annotations.Nullable; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import java.net.InetSocketAddress; | ||
| import java.net.SocketAddress; | ||
| import java.util.List; | ||
| import java.util.UUID; | ||
| import java.util.concurrent.ScheduledFuture; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| public class VoiceGatewayV5Connection extends AbstractVoiceGatewayConnection { | ||
| private static final Logger logger = LoggerFactory.getLogger(VoiceGatewayV5Connection.class); | ||
| private static final JsonArray SUPPORTED_CODECS; | ||
|
|
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| static { | ||
| SUPPORTED_CODECS = new JsonArray(); | ||
| SUPPORTED_CODECS.add(new JsonObject() | ||
| .add("name", "opus") | ||
| .add("type", "audio") | ||
| .add("priority", 1000) | ||
| .add("payload_type", 120)); | ||
| } | ||
|
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| private int ssrc; | ||
| private SocketAddress address; | ||
| private List<String> encryptionModes; | ||
| private UUID rtcConnectionId; | ||
| private ScheduledFuture heartbeatFuture; | ||
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| public VoiceGatewayV5Connection(VoiceConnectionImpl connection, VoiceServerInfo voiceServerInfo) { | ||
| super(connection, voiceServerInfo, 5); | ||
| } | ||
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||
| @Override | ||
| protected void identify() { | ||
| logger.debug("Identifying..."); | ||
| sendInternalPayload(Op.IDENTIFY, new JsonObject() | ||
| .addAsString("server_id", connection.getGuildId()) | ||
| .addAsString("user_id", connection.getClient().getClientId()) | ||
| .add("session_id", voiceServerInfo.getSessionId()) | ||
| .add("token", voiceServerInfo.getToken()) | ||
| .add("video", true)); | ||
| } | ||
|
|
||
| @Override | ||
| protected void handlePayload(JsonObject object) { | ||
| var op = object.getInt("op"); | ||
|
|
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| switch (op) { | ||
| case Op.HELLO: { | ||
| var data = object.getObject("d"); | ||
| int interval = data.getInt("heartbeat_interval"); | ||
|
|
||
| logger.debug("Received HELLO, heartbeat interval: {}", interval); | ||
| setupHeartbeats(interval); | ||
| break; | ||
| } | ||
| case Op.READY: { | ||
| var data = object.getObject("d"); | ||
| var port = data.getInt("port"); | ||
| var ip = data.getString("ip"); | ||
| ssrc = data.getInt("ssrc"); | ||
| encryptionModes = data.getArray("modes") | ||
| .stream() | ||
| .map(o -> (String) o) | ||
| .collect(Collectors.toList()); | ||
| address = new InetSocketAddress(ip, port); | ||
|
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| connection.getDispatcher().gatewayReady((InetSocketAddress) address, ssrc); | ||
| logger.debug("Voice READY, ssrc: {}", ssrc); | ||
| selectProtocol("udp"); | ||
| break; | ||
| } | ||
| case Op.SESSION_DESCRIPTION: { | ||
| var data = object.getObject("d"); | ||
| logger.debug("Got session description: {}", data); | ||
|
|
||
| if (connection.getConnectionHandler() == null) { | ||
| logger.warn("Received session description before protocol selection? (connection id = {})", | ||
| this.rtcConnectionId); | ||
| break; | ||
| } | ||
|
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| connection.getDispatcher().sessionDescription(data); | ||
| connection.getConnectionHandler().handleSessionDescription(data); | ||
| break; | ||
| } | ||
| case Op.CLIENT_CONNECT: { | ||
| var data = object.getObject("d"); | ||
| var user = data.getString("user_id"); | ||
| var audioSsrc = data.getInt("audio_ssrc", 0); | ||
| var videoSsrc = data.getInt("video_ssrc", 0); | ||
| connection.getDispatcher().userConnected(user, audioSsrc, videoSsrc); | ||
| break; | ||
| } | ||
| case Op.CLIENT_DISCONNECT: { | ||
| var data = object.getObject("d"); | ||
| var user = data.getString("user_id"); | ||
| connection.getDispatcher().userDisconnected(user); | ||
| break; | ||
| } | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| protected void onClose(int code, @Nullable String reason, boolean remote) { | ||
| super.onClose(code, reason, remote); | ||
| if (this.heartbeatFuture != null) { | ||
| heartbeatFuture.cancel(true); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void updateSpeaking(int mask) { | ||
| sendInternalPayload(Op.SPEAKING, new JsonObject() | ||
| .add("speaking", mask) | ||
| .add("delay", 0) | ||
| .add("ssrc", ssrc)); | ||
| } | ||
|
|
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| private void setupHeartbeats(int interval) { | ||
| if (eventExecutor != null) { | ||
| heartbeatFuture = eventExecutor.scheduleAtFixedRate(this::heartbeat, interval, interval, | ||
| TimeUnit.MILLISECONDS); | ||
| } | ||
| } | ||
|
|
||
| private void heartbeat() { | ||
| sendInternalPayload(Op.HEARTBEAT, System.currentTimeMillis()); | ||
| } | ||
|
|
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| private void selectProtocol(String protocol) { | ||
| var mode = EncryptionMode.select(encryptionModes); | ||
| logger.debug("Selected preferred encryption mode: {}", mode); | ||
|
|
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| rtcConnectionId = UUID.randomUUID(); | ||
| logger.debug("Generated new connection id: {}", rtcConnectionId); | ||
|
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| // known values: ["udp", "webrtc"] | ||
| if (protocol.equals("udp")) { | ||
| var conn = new DiscordUDPConnection(connection, address, ssrc); | ||
| conn.connect().thenAccept(ourAddress -> { | ||
| logger.debug("Connected, our external address is: {}", ourAddress); | ||
| connection.getDispatcher().externalIPDiscovered(ourAddress); | ||
|
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| var udpInfo = new JsonObject() | ||
| .add("address", ourAddress.getAddress().getHostAddress()) | ||
| .add("port", ourAddress.getPort()) | ||
| .add("mode", mode); | ||
|
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| sendInternalPayload(Op.SELECT_PROTOCOL, new JsonObject() | ||
| .add("protocol", "udp") | ||
| .add("codecs", SUPPORTED_CODECS) | ||
| .add("rtc_connection_id", rtcConnectionId.toString()) | ||
| .add("data", udpInfo) | ||
| .combine(udpInfo)); | ||
|
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| sendInternalPayload(Op.CLIENT_CONNECT, new JsonObject() | ||
| .add("audio_ssrc", ssrc) | ||
| .add("video_ssrc", 0) | ||
| .add("rtx_ssrc", 0)); | ||
| }); | ||
|
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| connection.setConnectionHandler(conn); | ||
| logger.debug("Waiting for session description..."); | ||
| } else if (protocol.equals("webrtc")) { | ||
| // do ICE and then generate SDP with info like above? | ||
| throw new IllegalArgumentException("WebRTC protocol is not supported yet!"); | ||
| } | ||
| } | ||
| } |