1 files changed, 46 insertions, 0 deletions
diff --git a/src/webrtc/opcodes/SelectProtocol.ts b/src/webrtc/opcodes/SelectProtocol.ts
new file mode 100644
index 00000000..a3579b34
--- /dev/null
+++ b/src/webrtc/opcodes/SelectProtocol.ts
@@ -0,0 +1,46 @@
+import { Payload, Send, WebSocket } from "@fosscord/gateway";
+import { SelectProtocolSchema, validateSchema } from "@fosscord/util";
+import { endpoint, PublicIP, VoiceOPCodes } from "@fosscord/webrtc";
+import SemanticSDP, { MediaInfo, SDPInfo } from "semantic-sdp";
+
+export async function onSelectProtocol(this: WebSocket, payload: Payload) {
+ if (!this.client) return;
+
+ const data = validateSchema("SelectProtocolSchema", payload.d) as SelectProtocolSchema;
+
+ const offer = SemanticSDP.SDPInfo.parse("m=audio\n" + data.sdp!);
+ this.client.sdp!.setICE(offer.getICE());
+ this.client.sdp!.setDTLS(offer.getDTLS());
+
+ const transport = endpoint.createTransport(this.client.sdp!);
+ this.client.transport = transport;
+ transport.setRemoteProperties(this.client.sdp!);
+ transport.setLocalProperties(this.client.sdp!);
+
+ const dtls = transport.getLocalDTLSInfo();
+ const ice = transport.getLocalICEInfo();
+ const port = endpoint.getLocalPort();
+ const fingerprint = dtls.getHash() + " " + dtls.getFingerprint();
+ const candidates = transport.getLocalCandidates();
+ const candidate = candidates[0];
+
+ const answer =
+ `m=audio ${port} ICE/SDP`
+ + `a=fingerprint:${fingerprint}`
+ + `c=IN IP4 ${PublicIP}`
+ + `a=rtcp:${port}`
+ + `a=ice-ufrag:${ice.getUfrag()}`
+ + `a=ice-pwd:${ice.getPwd()}`
+ + `a=fingerprint:${fingerprint}`
+ + `a=candidate:1 1 ${candidate.getTransport()} ${candidate.getFoundation()} ${candidate.getAddress()} ${candidate.getPort()} typ host`;
+
+ await Send(this, {
+ op: VoiceOPCodes.SELECT_PROTOCOL_ACK,
+ d: {
+ video_codec: "H264",
+ sdp: answer,
+ media_session_id: this.session_id,
+ audio_codec: "opus"
+ }
+ });
+}
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