*Initial version

.yarnrc.yml

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+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-typescript.cjs
+    spec: "@yarnpkg/plugin-typescript"

build.js

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+import esbuild from "esbuild";
+
+esbuild.buildSync({
+  entryPoints: ["src/index.ts"],
+  outfile: "dist/discovery-irc.js",
+  format: "cjs",
+  bundle: true,
+  platform: "node",
+});

package.json

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+{
+    "name": "@lumeweb/relay-plugin-discovery-irc",
+    "version": "0.1.0",
+    "type": "module",
+    "scripts": {
+        "build": "node build.js"
+    },
+    "devDependencies": {
+        "@lumeweb/peer-discovery": "https://git.lumeweb.com/LumeWeb/peer-discovery.git",
+        "@lumeweb/relay-types": "https://git.lumeweb.com/LumeWeb/relay-types.git",
+        "@types/b4a": "^1.6.0",
+        "@types/prettier": "^2",
+        "esbuild": "^0.16.10",
+        "prettier": "^2.8.1",
+        "rollup": "^3.7.5"
+    },
+    "dependencies": {
+        "@ctrl/irc": "^2.1.0",
+        "b4a": "^1.6.1",
+        "json-stringify-deterministic": "^1.0.8"
+    }
+}

pkg/discovery-irc.json

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+{
+    "plugin": {
+        "discoveryirc": {
+            "networks": [
+                {
+                    "host": "irc.ergo.chat",
+                    "port": 6697,
+                    "ssl" : true
+                }
+            ]
+        }
+    }
+}

pkg/load-discovery-irc.json

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+{
+    "plugins": ["discovery-irc"]
+}

src/index.ts

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+import type { Plugin, PluginAPI } from "@lumeweb/relay-types";
+import type { Peer } from "@lumeweb/peer-discovery";
+import { IrcClient } from "@ctrl/irc";
+import b4a from "b4a";
+import jsonStringify from "json-stringify-deterministic";
+import type { Message } from "@ctrl/irc/dist/src/parseMessage";
+
+interface SignedPeerResponse extends Peer {
+  timestamp: number;
+  signature?: string;
+}
+
+interface Network {
+  host: string;
+  port: number;
+  ssl: boolean;
+}
+
+const plugin: Plugin = {
+  name: "discovery-irc",
+  async plugin(api: PluginAPI): Promise<void> {
+    for (const network of api.pluginConfig.array("networks", []) as Network[]) {
+      let client = new IrcClient(undefined, api.identity.fingerprintHex, {
+        host: network.host,
+        port: network.port,
+        secure: network.ssl,
+        channels: ["#lumeweb"],
+      });
+      client.addListener("message", function (from, to, message) {
+        const pubkey = b4a.from(message, "hex");
+        if (!b4a.equals(api.identity.publicKeyRaw, pubkey)) {
+          return;
+        }
+
+        const host = api.config.str("domain");
+        const port = api.config.uint("port");
+        const timestamp = Date.now();
+
+        let data = {
+          host,
+          port,
+          timestamp,
+        } as SignedPeerResponse;
+
+        let json = jsonStringify(data);
+
+        data.signature = b4a
+          .from(api.identity.sign(b4a.from(jsonStringify(data))))
+          .toString("hex");
+
+        api.logger.info(api.identity.verify(b4a.from(json), data.signature));
+
+        client.say(from, jsonStringify(data));
+      });
+      client.addListener("error", (message: Message) => {
+        api.logger.error(message);
+      });
+
+      client.connect();
+
+      process.on("SIGTERM", () => {
+        client.end();
+      });
+    }
+  },
+};
+
+export default plugin;

tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "esnext",
+        "target": "esnext",
+        "esModuleInterop": true,
+        "outDir": "dist",
+        "moduleResolution": "node"
+    },
+    "include": ["src"],
+    "exclude": [
+        "node_modules"
+    ]
+}