cannot use a wallet as a signer

[Philotheephilix]

import 'dotenv/config';
import { WebSocket } from 'ws';
import { createWalletClient, custom } from 'viem';
import { privateKeyToAccount, generatePrivateKey } from 'viem/accounts';
import { mainnet } from 'viem/chains';
import {
	createAuthRequestMessage,
	createAuthVerifyMessage,
	createEIP712AuthMessageSigner,
	parseAnyRPCResponse,
	RPCMethod,
	type AuthChallengeResponse,
	type AuthRequestParams,
} from '@erc7824/nitrolite';

const WS_URL = process.env.WS_URL || process.env.VITE_NITROLITE_WS_URL;
const AUTH_SCOPE = 'daaid.app';
const APP_NAME = 'DAAID';
const SESSION_DURATION = 3600; // 1 hour `
const expire = String(nowSec() + SESSION_DURATION);
const getAuthDomain = () => ({ name: 'DAAID' });

function nowSec() { return Math.floor(Date.now() / 1000); }
function safeStringify(obj: unknown) {
	return JSON.stringify(obj, (_k, v) => (typeof v === 'bigint' ? v.toString() : v));
}

async function main() {
	if (!WS_URL) {
		console.error('Missing WS_URL env');
		process.exit(1);
	}
	const pk = process.env.PRIVATE_KEY as `0x${string}` | undefined;
	if (!pk) {
		console.error('Set PRIVATE_KEY in env');
		process.exit(1);
	}
	const walletAccount = privateKeyToAccount(pk);
	
	// Initialize wallet client with a minimal transport that supports signing
	const walletClient = createWalletClient({
		account: walletAccount,
		chain: mainnet,
		transport: custom({
			request: async ({ method, params }) => {
				// Only handle signing methods, reject others
				if (method === 'eth_signTypedData_v4' || method === 'personal_sign') {
					// This shouldn't be called since we're using the account directly
					throw new Error('Use account.signTypedData instead');
				}
				throw new Error(`Method ${method} not supported in signing-only mode`);
			},
		}),
	});

	console.log(`[backend] connecting to ${WS_URL} as ${walletAccount.address}`);
	const ws = new WebSocket(WS_URL);

	ws.on('open', async () => {
		console.log('[backend] ws connected');
		// Kick off auth request: wallet is application, session key is participant
		const authParams: AuthRequestParams = {
			address: walletAccount.address,
			session_key: walletAccount.address,
			app_name: APP_NAME,
			expire,
			scope: AUTH_SCOPE,
			application: walletAccount.address,
			allowances: [],
		};
		const payload = await createAuthRequestMessage(authParams);
		ws.send(payload);
	});

	ws.on('message', async (raw) => {
		// Normalize incoming data and always log raw content
		const asString = typeof raw === 'string' ? raw : raw.toString();
		console.log('[backend] recv raw:', asString);

		// Try to parse as JSON; if it fails, just return after logging
		let data: unknown;
		try {
			data = JSON.parse(asString);
		} catch (_e) {
			return; // non-JSON message handled by raw log above
		}

		// Log parsed JSON with bigint-safe stringify
		console.log('[backend] recv json:', safeStringify(data));

		// Attempt to parse as RPC response if shape matches
		try {
			const response = parseAnyRPCResponse(JSON.stringify(data));
			if (response.method === RPCMethod.AuthChallenge) {
				const challenge = response as AuthChallengeResponse;
				const verifyParams = {
					scope: AUTH_SCOPE,
					application: walletAccount.address as `0x${string}`,
					participant: walletAccount.address as `0x${string}`,
					expire,
					allowances: [],
				};
				
				// Create a signer object that matches what the library expects
				const signer = {
					account: walletAccount,
					signTypedData: async (args: any) => {
						return await walletAccount.signTypedData(args);
					},
					// Add other properties the library might check for
					chain: mainnet,
					transport: walletClient.transport,
				};
				
				try {
					const eip712Signer = createEIP712AuthMessageSigner(signer as any, verifyParams, getAuthDomain());
					const verifyPayload = await createAuthVerifyMessage(eip712Signer, challenge);
					ws.send(verifyPayload);
				} catch (signingError) {
					console.error('[backend] signing error:', signingError);
					// Try with original walletClient as fallback
					try {
						const eip712Signer = createEIP712AuthMessageSigner(walletClient, verifyParams, getAuthDomain());
						const verifyPayload = await createAuthVerifyMessage(eip712Signer, challenge);
						ws.send(verifyPayload);
					} catch (fallbackError) {
						console.error('[backend] fallback error:', fallbackError);
					}
				}
			}
		} catch (err) {
			console.error('[backend] rpc parse/handle error', err);
		}
	});

	ws.on('ping', (data) => {
		console.log('[backend] recv ping:', data?.toString?.() ?? '');
	});

	ws.on('pong', (data) => {
		console.log('[backend] recv pong:', data?.toString?.() ?? '');
	});

	ws.on('close', () => console.log('[backend] ws closed'));
	ws.on('error', (e) => console.error('[backend] ws error', e));
}

main().catch((e) => {
	console.error(e);
	process.exit(1);
});

[Philotheephilix]

[backend] connecting to wss://clearnet.yellow.com/ws as 0xB6FFEC341d6949141d65A06891Eb028faF9ce5CD
[backend] ws connected
[backend] recv raw: {"res":[0,"assets",{"assets":[{"token":"0xDB33fEC4e2994a675133320867a6439Da4A5acD8","chain_id":1,"symbol":"beatwav","decimals":18},{"token":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","chain_id":1,"symbol":"usdc","decimals":6},{"token":"0x3A15461d8AE0f0Fb5fA2629e9dA7D66A794a6E37","chain_id":30,"symbol":"usdc","decimals":18},{"token":"0x45268ba6c9A0459Eda6F6fAb4E5083c61730F375","chain_id":137,"symbol":"beatwav","decimals":6},{"token":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","chain_id":137,"symbol":"usdc","decimals":6},{"token":"0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619","chain_id":137,"symbol":"weth","decimals":18},{"token":"0x79A02482A880bCE3F13e09Da970dC34db4CD24d1","chain_id":480,"symbol":"usdc","decimals":6},{"token":"0x2aaBea2058b5aC2D339b163C6Ab6f2b6d53aabED","chain_id":747,"symbol":"usdc","decimals":6},{"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","chain_id":8453,"symbol":"usdc","decimals":6},{"token":"0x176211869cA2b568f2A7D4EE941E073a821EE1ff","chain_id":59144,"symbol":"usdc","decimals":6},{"token":"0xa16148c6Ac9EDe0D82f0c52899e22a575284f131","chain_id":1440000,"symbol":"usdc","decimals":6},{"token":"0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE","chain_id":1440000,"symbol":"xrp","decimals":18}]},1758745775858],"sig":["0xb93a99d588b2856bfc408cb0888fb2d2f2ef13672256a0253abf6893faa0d76b61799a4c44fd26fd6dd8e7e05aa44a022bf57a2aed7fa595fa9e82424841d1711c"]}
[backend] recv json: {"res":[0,"assets",{"assets":[{"token":"0xDB33fEC4e2994a675133320867a6439Da4A5acD8","chain_id":1,"symbol":"beatwav","decimals":18},{"token":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","chain_id":1,"symbol":"usdc","decimals":6},{"token":"0x3A15461d8AE0f0Fb5fA2629e9dA7D66A794a6E37","chain_id":30,"symbol":"usdc","decimals":18},{"token":"0x45268ba6c9A0459Eda6F6fAb4E5083c61730F375","chain_id":137,"symbol":"beatwav","decimals":6},{"token":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","chain_id":137,"symbol":"usdc","decimals":6},{"token":"0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619","chain_id":137,"symbol":"weth","decimals":18},{"token":"0x79A02482A880bCE3F13e09Da970dC34db4CD24d1","chain_id":480,"symbol":"usdc","decimals":6},{"token":"0x2aaBea2058b5aC2D339b163C6Ab6f2b6d53aabED","chain_id":747,"symbol":"usdc","decimals":6},{"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","chain_id":8453,"symbol":"usdc","decimals":6},{"token":"0x176211869cA2b568f2A7D4EE941E073a821EE1ff","chain_id":59144,"symbol":"usdc","decimals":6},{"token":"0xa16148c6Ac9EDe0D82f0c52899e22a575284f131","chain_id":1440000,"symbol":"usdc","decimals":6},{"token":"0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE","chain_id":1440000,"symbol":"xrp","decimals":18}]},1758745775858],"sig":["0xb93a99d588b2856bfc408cb0888fb2d2f2ef13672256a0253abf6893faa0d76b61799a4c44fd26fd6dd8e7e05aa44a022bf57a2aed7fa595fa9e82424841d1711c"]}
[backend] recv raw: {"res":[1758745780422,"auth_challenge",{"challenge_message":"7ee364e1-61b9-4731-a560-6d516d405d69"},1758745776153],"sig":["0x83667505f0b315a0159217d08542a60400777d5c671f853523e2402efda814c0263e567fb29bec744731535ffe6e1b5a4df0f2ffffd09d32c4a48e2429a1bb351b"]}
[backend] recv json: {"res":[1758745780422,"auth_challenge",{"challenge_message":"7ee364e1-61b9-4731-a560-6d516d405d69"},1758745776153],"sig":["0x83667505f0b315a0159217d08542a60400777d5c671f853523e2402efda814c0263e567fb29bec744731535ffe6e1b5a4df0f2ffffd09d32c4a48e2429a1bb351b"]}
[backend] recv raw: {"res":[1758745785482,"error",{"error":"cannot use a wallet as a signer"},1758745776363],"sig":["0x72caa1c7a27101e6d95e8fed1108fbdc680d78920c217af64ead594207ba3d18513ffdbec30f60ec45bc73d69e8d04db2669e0048d4226942e9f5aa7d2c9743a1b"]}
[backend] recv json: {"res":[1758745785482,"error",{"error":"cannot use a wallet as a signer"},1758745776363],"sig":["0x72caa1c7a27101e6d95e8fed1108fbdc680d78920c217af64ead594207ba3d18513ffdbec30f60ec45bc73d69e8d04db2669e0048d4226942e9f5aa7d2c9743a1b"]}

[Philotheephilix]

i messed up the session key value in the auth params
i was passing the same wallet for both wallet and session.

[Philotheephilix]

@nksazonov quick question
one of my yellow based app was working 3 weeks ago but when i authenticate now i get
Error: unsupported protocol: nitroliterpc

This happens after getting jwt and requesting for token balances

[nksazonov]

This error is related to the outdated TS SDK. Please update the TS SDK to the latest version, where the API has changed. Now you must explicitly supply the protocol version you are using (for now either "NitroRPC/0.2" or "NitroRPC/0.4" are supported).
You can read more here.

[Philotheephilix]

Thank you,
I'll check that out

[Philotheephilix]

@nksazonov
i need some guidance about how to proceed
i am building a communication network kind of thing and will have lot so data transferred back and forth as state changes for each user
how can i architect it?

• one session for everything
• one for send and one for receive
• your ideas on it??

[Philotheephilix]

Can any give steps to use proper signer variable by modifying current usage of wallet client or any other way to use private key to listen on the wss