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hash-wallet/cw_solana
jwinterm 7740cb0559 Continue Cake Wallet rebrand: legal, FAQ, and package metadata
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2024-02-23 15:39:19 +02:00

cw_solana

Solana wallet module for Cake Wallet. Provides native SOL and SPL token support built on on_chain/solana with high-throughput RPC usage and safe transaction parsing.

Features

  • Connect to Solana RPC (Ankr/Chainstack/custom) via SolanaRPC over HTTP.
  • Fetch SOL balances and aggregate SPL token balances across accounts.
  • Parse and stream native and SPL token transactions (filters ATA-only and spam-like micro txs).
  • Estimate fees per compiled message and enforce rent-exemption checks.
  • Create/sign/broadcast SOL and SPL transfers; auto-create recipient ATA when necessary.
  • Manage SPL tokens; fetch on-chain metadata (symbol/name) for unknown mints.
  • Sign and verify messages.
  • Node health checks for SOL and a known SPL token (USDC).

Getting started

If you use hosted RPC providers, add a secrets file for keys (optional unless using those hosts):

// cw_solana/lib/.secrets.g.dart   (DO NOT COMMIT)
const String ankrApiKey = 'YOUR_ANKR_KEY';
const String chainStackApiKey = 'YOUR_CHAINSTACK_KEY';

Connect and sync:

final service = SolanaWalletService(walletInfoBox, true);
final wallet = await service.create(SolanaNewWalletCredentials(name: 'My SOL', password: 'secret'));
await wallet.connectToNode(node: Node(uriRaw: 'api.mainnet-beta.solana.com', isSSL: true));
await wallet.startSync();
final sol = wallet.balance[CryptoCurrency.sol]?.balance;

Usage

Send SOL:

final pending = await wallet.createTransaction(
  SolanaTransactionCredentials.single(
    address: 'SoL...',
    cryptoAmount: '0.05',
    currency: CryptoCurrency.sol,
  ),
);
final sig = await pending.commit();

Add an SPL token by mint:

final token = await wallet.getSPLToken('EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v'); // USDC
if (token != null) {
  await wallet.addSPLToken(token);
}

Additional information

  • When using rpc.ankr.com or solana-mainnet.core.chainstack.com, the client reads API keys from .secrets.g.dart.
  • See lib/ for APIs: SolanaWalletClient, SolanaWallet, SolanaWalletService, and credential types.