Initial implementation of class and discoving other peers

packages/peer/.eslintignore

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+# Don't lint node_modules.
+node_modules
+
+# Don't lint build output.
+dist

packages/peer/.eslintrc.json

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+{
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "extends": [
+        "semistandard",
+        "plugin:@typescript-eslint/recommended"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 12,
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+    }
+}

packages/peer/.gitignore

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+node_modules
+
+#Hardhat files
+cache
+artifacts
+
+#yarn
+yarn-error.log
+
+#Environment variables
+.env

packages/peer/package.json

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+{
+  "name": "@cerc-io/peer",
+  "version": "0.2.18",
+  "description": "libp2p module",
+  "main": "dist/index.js",
+  "exports": "./dist/index.js",
+  "type": "module",
+  "license": "AGPL-version-3.0",
+  "private": true,
+  "engines": {
+    "node": ">=14.16",
+    "npm": ">= 6.0.0"
+  },
+  "homepage": "",
+  "repository": {
+    "type": "git",
+    "url": ""
+  },
+  "bugs": "",
+  "keywords": [],
+  "scripts": {
+    "build": "tsc",
+    "dev": "node dist/index.js",
+    "test": ""
+  },
+  "dependencies": {
+    "@chainsafe/libp2p-noise": "^10.2.0",
+    "@libp2p/bootstrap": "^5.0.2",
+    "@libp2p/mplex": "^7.1.1",
+    "@libp2p/webrtc-star": "^5.0.3",
+    "@libp2p/websockets": "^5.0.2",
+    "libp2p": "^0.41.0",
+    "wrtc": "^0.4.7"
+  },
+  "devDependencies": {
+    "@typescript-eslint/eslint-plugin": "^4.25.0",
+    "@typescript-eslint/parser": "^4.25.0",
+    "eslint": "^7.27.0",
+    "eslint-config-semistandard": "^15.0.1",
+    "eslint-config-standard": "^16.0.3",
+    "eslint-plugin-import": "^2.23.3",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^5.1.0",
+    "eslint-plugin-standard": "^5.0.0",
+    "typescript": "^4.3.2"
+  }
+}

packages/peer/src/index.ts

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+//
+// Copyright 2022 Vulcanize, Inc.
+//
+
+import { createLibp2p, Libp2p } from 'libp2p'
+// For nodejs.
+import wrtc from 'wrtc'
+
+import { webSockets } from '@libp2p/websockets'
+import { webRTCStar, WebRTCStarTuple } from '@libp2p/webrtc-star'
+import { noise } from '@chainsafe/libp2p-noise'
+import { mplex } from '@libp2p/mplex'
+import { bootstrap } from '@libp2p/bootstrap'
+
+// Known peers addresses
+const bootstrapMultiaddrs = [
+  '/dnsaddr/bootstrap.libp2p.io/p2p/QmbLHAnMoJPWSCR5Zhtx6BHJX9KiKNN6tpvbUcqanj75Nb',
+  '/dnsaddr/bootstrap.libp2p.io/p2p/QmNnooDu7bfjPFoTZYxMNLWUQJyrVwtbZg5gBMjTezGAJN'
+]
+
+export class Peer {
+  _node?: Libp2p
+  _wrtcStar: WebRTCStarTuple
+
+  constructor () {
+    // Instantiation in nodejs.
+    this._wrtcStar = webRTCStar({ wrtc });
+  }
+
+  async init () {
+    this._node = await createLibp2p({
+      addresses: {
+        // Add the signaling server address, along with our PeerId to our multiaddrs list
+        // libp2p will automatically attempt to dial to the signaling server so that it can
+        // receive inbound connections from other peers
+        listen: [
+          '/dns4/wrtc-star1.par.dwebops.pub/tcp/443/wss/p2p-webrtc-star',
+          '/dns4/wrtc-star2.sjc.dwebops.pub/tcp/443/wss/p2p-webrtc-star'
+        ]
+      },
+      transports: [
+        webSockets(),
+        this._wrtcStar.transport
+      ],
+      connectionEncryption: [noise()],
+      streamMuxers: [mplex()],
+      peerDiscovery: [
+        this._wrtcStar.discovery,
+        bootstrap({
+          list: bootstrapMultiaddrs, // provide array of multiaddrs
+        })
+      ],
+    })
+
+    this._node.addEventListener('peer:discovery', (evt) => {
+      console.log('Discovered %s', evt.detail.id.toString()) // Log discovered peer
+    })
+    
+    this._node.connectionManager.addEventListener('peer:connect', (evt) => {
+      console.log('Connected to %s', evt.detail.remotePeer.toString()) // Log connected peer
+    })
+
+    // Listen for peers disconnecting
+    this._node.connectionManager.addEventListener('peer:disconnect', (evt) => {
+      const connection = evt.detail
+      console.log(`Disconnected from ${connection.remotePeer.toString()}`)
+    })
+
+    console.log(`libp2p id is ${this._node.peerId.toString()}`)
+  }
+}
+
+const peer = new Peer();
+
+peer.init()
+  .then(() => console.log("started"))

packages/peer/src/types/common/main.d.ts

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+//
+// Copyright 2022 Vulcanize, Inc.
+//
+
+declare module 'wrtc';

packages/peer/src/types/common/package.json

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+{
+  "name": "common",
+  "version": "0.1.0",
+  "license": "AGPL-3.0",
+  "typings": "main.d.ts"
+}

packages/peer/tsconfig.json

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+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig.json to read more about this file */
+
+    /* Basic Options */
+    // "incremental": true,                         /* Enable incremental compilation */
+    "target": "es5",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */
+    "module": "node16",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    "lib": [ "ES5", "ES6", "ES2020" ],              /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                             /* Allow javascript files to be compiled. */
+    // "checkJs": true,                             /* Report errors in .js files. */
+    // "jsx": "preserve",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */
+    "declaration": true,                         /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    "sourceMap": true,                              /* Generates corresponding '.map' file. */
+    // "outFile": "./",                             /* Concatenate and emit output to single file. */
+    "outDir": "dist",                              /* Redirect output structure to the directory. */
+    // "rootDir": "./",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                           /* Enable project compilation */
+    // "tsBuildInfoFile": "./",                     /* Specify file to store incremental compilation information */
+    // "removeComments": true,                      /* Do not emit comments to output. */
+    // "noEmit": true,                              /* Do not emit outputs. */
+    // "importHelpers": true,                       /* Import emit helpers from 'tslib'. */
+    "downlevelIteration": true,                     /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,                                 /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,                    /* Enable strict null checks. */
+    // "strictFunctionTypes": true,                 /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,        /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                        /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                      /* Report errors on unused locals. */
+    // "noUnusedParameters": true,                  /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,                   /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,          /* Report errors for fallthrough cases in switch statement. */
+    // "noUncheckedIndexedAccess": true,            /* Include 'undefined' in index signature results */
+    // "noImplicitOverride": true,                  /* Ensure overriding members in derived classes are marked with an 'override' modifier. */
+    // "noPropertyAccessFromIndexSignature": true,  /* Require undeclared properties from index signatures to use element accesses. */
+
+    /* Module Resolution Options */
+    "moduleResolution": "node16",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                             /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */
+    "typeRoots": [
+      "./src/types"
+    ],                                              /* List of folders to include type definitions from. */
+    // "types": [],                                 /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,                    /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,                /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                               /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,                     /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    "experimentalDecorators": true,              /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,               /* Enables experimental support for emitting type metadata for decorators. */
+
+    /* Advanced Options */
+    "skipLibCheck": true,                           /* Skip type checking of declaration files. */
+    "forceConsistentCasingInFileNames": true,        /* Disallow inconsistently-cased references to the same file. */
+    "resolveJsonModule": true                       /* Enabling the option allows importing JSON, and validating the types in that JSON file. */
+  },
+  "include": ["src"],
+  "exclude": ["test", "dist", "artifacts", "cache"]
+}