1 files changed, 36 insertions, 0 deletions
diff --git a/src/events/Message.ts b/src/events/Message.ts
new file mode 100644
index 00000000..bc497e94
--- /dev/null
+++ b/src/events/Message.ts
@@ -0,0 +1,36 @@
+import WebSocket, { Data } from "../util/WebSocket";
+import erlpack from "erlpack";
+import OPCodeHandlers from "../opcodes";
+import { Payload, CLOSECODES } from "../util/Constants";
+import { instanceOf } from "lambert-server";
+
+const PayloadSchema = {
+ op: Number,
+ $d: Object,
+ $s: Number,
+ $t: String,
+};
+
+export async function Message(this: WebSocket, buffer: Data) {
+ // TODO: compression
+ var data: Payload;
+
+ try {
+ if (this.encoding === "etf" && buffer instanceof Buffer) data = erlpack.unpack(buffer);
+ else if (this.encoding === "json" && typeof buffer === "string") data = JSON.parse(buffer);
+ if (!instanceOf(PayloadSchema, data)) throw "invalid data";
+ } catch (error) {
+ return this.close(CLOSECODES.Decode_error);
+ }
+
+ // @ts-ignore
+ const OPCodeHandler = OPCodeHandlers[data.op];
+ if (!OPCodeHandler) return this.close(CLOSECODES.Unknown_opcode);
+
+ try {
+ return await OPCodeHandler.call(this, data);
+ } catch (error) {
+ console.error(error);
+ return this.close(CLOSECODES.Unknown_error);
+ }
+}
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