*Change approach to proxying protomux requests over the kernel

package.json

@@ -11,14 +11,13 @@
     "dependencies": {
         "@lumeweb/interface-relay": "git+https://git.lumeweb.com/LumeWeb/interface-relay.git",
         "@lumeweb/kernel-swarm-client": "git+https://git.lumeweb.com/LumeWeb/kernel-swarm-client.git",
+        "@lumeweb/libkernel-universal": "git+https://git.lumeweb.com/LumeWeb/libkernel-universal.git",
         "@lumeweb/rpc-client": "git+https://git.lumeweb.com/LumeWeb/rpc-client.git",
         "b4a": "^1.6.3",
         "libkmodule": "^0.2.53",
+        "p-defer": "^4.0.0",
         "protomux": "git+https://git.lumeweb.com/LumeWeb/protomux.git"
     },
-    "browser": {
-        "timers": "timers-browserify"
-    },
     "devDependencies": {
         "@scure/bip39": "^1.2.0",
         "@skynetlabs/skynet-nodejs": "^2.9.0",
@@ -28,14 +27,10 @@
         "esbuild": "^0.17.15",
         "read": "^2.0.0",
         "timers-browserify": "^2.0.12",
-        "typescript": "^5.0.3"
+        "typescript": "^5.0.4"
     },
-    "pnpm": {
-        "patchedDependencies": {
-            "b4a@1.6.3": "patches/b4a@1.6.3.patch"
-        },
-        "overrides": {
-            "protomux": "git+https://git.lumeweb.com/LumeWeb/protomux.git"
-        }
+    "browser": {
+        "timers": "timers-browserify",
+        "protomux": "./src/protomux.ts"
     }
 }

src/protomux.ts

@@ -0,0 +1,263 @@
+import { Client, factory } from "@lumeweb/libkernel-universal";
+const MODULE = "_AXYJDzn2fjd-YfuchEegna7iErhun6QwQK7gSa3UNjHvw";
+
+import defer from "p-defer";
+
+class Protomux {
+  private isProtomux = true;
+
+  constructor(stream: any) {
+    this._stream = stream;
+    if (!stream.userData) {
+      stream.userData = this;
+    }
+  }
+
+  private _stream: any;
+
+  get stream(): any {
+    return this._stream;
+  }
+
+  static from(stream: any) {
+    if (stream.userData && stream.userData.isProtomux) return stream.userData;
+    if (stream.isProtomux) return stream;
+    return new this(stream);
+  }
+
+  public async createChannel({
+    protocol,
+    id = null,
+    handshake = null,
+    onopen = undefined,
+    onclose = undefined,
+    ondestroy = undefined,
+  }: {
+    protocol: string;
+    id: any;
+    handshake: any;
+    onopen?: Function;
+    onclose?: Function;
+    ondestroy?: Function;
+  }) {
+    return createChannel(
+      this,
+      protocol,
+      id,
+      handshake,
+      onopen,
+      onclose,
+      ondestroy
+    );
+  }
+}
+
+class Channel extends Client {
+  private protocol: string;
+  private id: any;
+  private handshake: any;
+  private onopen?: Function;
+  private onclose?: Function;
+  private ondestroy?: Function;
+  private _ready?: Promise<void>;
+
+  private _send?: (data?: any) => void;
+
+  private _opened = defer();
+
+  private _queue: Message[] = [];
+
+  private _inited = false;
+
+  constructor(
+    mux: Protomux,
+    protocol: string,
+    id: any,
+    handshake: any,
+    onopen?: Function,
+    onclose?: Function,
+    ondestroy?: Function
+  ) {
+    super();
+    this._mux = mux;
+    this.protocol = protocol;
+    this.id = id;
+    this.handshake = handshake;
+    this.onopen = onopen;
+    this.onclose = onclose;
+    this.ondestroy = ondestroy;
+  }
+
+  private _mux: Protomux;
+
+  get mux(): Protomux {
+    return this._mux;
+  }
+
+  private _channelId = -1;
+
+  get channelId(): number {
+    return this._channelId;
+  }
+
+  private async init(): Promise<void> {
+    if (this._inited) {
+      return;
+    }
+
+    this._inited = true;
+
+    const created = defer();
+    const [update, ret] = this.connectModule(
+      "createProtomuxChannel",
+      {
+        id: this._mux.stream.id,
+        data: {
+          protocol: this.protocol,
+          id: this.id,
+          handshake: this.handshake,
+          onopen: !!this.onopen,
+          onclose: !!this.onclose,
+          ondestroy: !!this.ondestroy,
+        },
+      },
+      (data: any) => {
+        switch (data.action) {
+          case "open":
+            this._opened.resolve();
+            break;
+          case "onopen":
+            this.onopen?.(...data.args);
+            break;
+          case "onclose":
+            this.onclose?.(...data.args);
+            break;
+          case "ondestroy":
+            this.ondestroy?.(...data.args);
+            break;
+          default:
+            this._channelId = data;
+            created.resolve();
+        }
+      }
+    );
+    this._send = update;
+
+    ret.catch((e) => created.reject(e));
+
+    this._ready = created.promise as Promise<void>;
+  }
+
+  async open(): Promise<void> {
+    await this.init();
+    await this._ready;
+
+    while (this._queue.length) {
+      await this._queue.shift()?.init();
+    }
+
+    this._send?.({ action: "open" });
+
+    return this._opened.promise as Promise<void>;
+  }
+
+  public addMessage({
+    encoding = undefined,
+    onmessage,
+  }: {
+    encoding?: any;
+    onmessage: Function;
+  }) {
+    return createMessage({ channel: this, encoding, onmessage });
+  }
+
+  public async queueMessage(message: Message) {
+    this._queue.push(message);
+  }
+}
+
+class Message extends Client {
+  private encoding: any;
+  private onmessage: Function;
+  private channel: Channel;
+
+  private _send?: (data?: any) => void;
+
+  constructor({
+    channel,
+    encoding = undefined,
+    onmessage = () => {},
+  }: {
+    channel: Channel;
+    encoding?: any;
+    onmessage: Function;
+  }) {
+    super();
+    this.channel = channel;
+    this.encoding = encoding;
+    this.onmessage = onmessage;
+    this.channel.queueMessage(this);
+  }
+
+  async init(): Promise<void> {
+    const created = defer();
+
+    await this.loadLibs(MODULE);
+
+    const [update] = this.connectModule(
+      "createProtomuxMessage",
+      {
+        id: this.channel.mux.stream.id,
+        channelId: this.channel.channelId,
+        data: {
+          encoding: !!this.encoding,
+          onmessage: !!this.onmessage,
+        },
+      },
+      async (data: any) => {
+        switch (data.action) {
+          case "encode":
+            update({
+              action: "encode",
+              args: [await this.encoding.encode?.(...data.args), data.args[0]],
+            });
+            break;
+          case "decode":
+            update({
+              action: "decode",
+              args: [await this.encoding.decode?.(...data.args), data.args[0]],
+            });
+            break;
+          case "preencode":
+            update({
+              action: "preencode",
+              args: [
+                await this.encoding.preencode?.(...data.args),
+                data.args[0],
+              ],
+            });
+            break;
+          case "onmessage":
+            this.onmessage?.(...data.args);
+            break;
+          case "created":
+            created.resolve();
+            break;
+        }
+      }
+    );
+
+    this._send = update;
+
+    return created.promise as Promise<void>;
+  }
+
+  public send(data: any) {
+    this._send?.({ action: "send", args: [data] });
+  }
+}
+
+const createChannel = factory<Channel>(Channel, MODULE);
+const createMessage = factory<Message>(Message, MODULE);
+
+export = Protomux;