34c672b927
B2 (Build B milestone 2): the real cross-chain atomic swap, Tron analog of T4. One sha256 hashlock governs a Nile TronHTLC leg (real test-USDT) and a chipnet AtomicSwapHTLC leg. Validated end-to-end, all 3 checks PASS: - Alice locks 5 USDT on Nile, Bob funds the BCH HTLC on chipnet - Alice claims the BCH leg, revealing S on-chain - Bob reads S off chipnet and claims the real Nile USDT No oracle, no wrapped token, no custodian. First interchain rail into the hub. BCH claim 2fc1dfb0… · Nile USDT claim f5128666… Token gotcha (fixed): the Nile TetherToken performs transfer but RETURNS false (declares returns(bool) without setting it), so require(transfer(...)) and even SafeERC20's bool decode wrongly revert and roll back a good move. TronHTLC._safeTransfer/_From now ignore the return value and verify by BALANCE DELTA. Applies to USDT on every chain — B3 vault must do the same. scripts/tron-bch-htlc-swap.mjs (B2 harness) scripts/tron-trc20-holdings.mjs, tron-usdt-probe.mjs, tron-sim-transfer.mjs, tron-b2-claim-retry.mjs (discovery + diagnostics) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
38 lines
1.9 KiB
JavaScript
38 lines
1.9 KiB
JavaScript
/**
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* tron-sim-transfer.mjs — simulate USDT.transfer with caller = the HTLC contract
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* (vs an EOA) to surface the real revert reason behind B2's "transfer failed".
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*/
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import { readFileSync } from 'node:fs';
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import { join } from 'node:path';
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import { TronWeb } from 'tronweb';
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const ROOT = join(import.meta.dirname, '..');
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const NILE = 'https://nile.trongrid.io';
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const sw = JSON.parse(readFileSync(join(ROOT, '.tron-b2-lastswap.json'), 'utf8'));
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const k = JSON.parse(readFileSync(join(ROOT, '.tron-nile-keys.json'), 'utf8'));
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const tronWeb = new TronWeb({ fullHost: NILE, privateKey: k.privateKey });
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const USDT_HEX = tronWeb.address.toHex(sw.usdt);
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const decodeRevert = (hexStr) => {
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if (!hexStr) return '(no data)';
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if (hexStr.startsWith('08c379a0')) { const len = parseInt(hexStr.slice(72, 136), 16); return Buffer.from(hexStr.slice(136, 136 + len * 2), 'hex').toString('utf8'); }
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return hexStr.slice(0, 80);
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};
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async function sim(caller, to, value, label) {
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const res = await tronWeb.transactionBuilder.triggerConstantContract(
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USDT_HEX, 'transfer(address,uint256)', {},
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[{ type: 'address', value: tronWeb.address.toHex(to) }, { type: 'uint256', value }],
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tronWeb.address.toHex(caller));
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const okFlag = res?.result?.result === true;
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const cres = res?.constant_result?.[0];
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const msgHex = res?.result?.message ? Buffer.from(res.result.message, 'hex').toString('utf8') : '';
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console.log(`\n${label} (caller ${caller}):`);
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console.log(' result.result:', okFlag, '| code:', res?.result?.code || '-');
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console.log(' constant_result:', cres ? cres.slice(0, 80) : '(none)', '->', decodeRevert(cres));
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if (msgHex) console.log(' message:', msgHex);
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}
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console.log('USDT', sw.usdt, '| HTLC', sw.htlc, '| receiver', sw.receiver, '| amount', sw.amount);
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await sim(sw.htlc, sw.receiver, sw.amount, '1) HTLC -> receiver (the failing call)');
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await sim(k.address, sw.receiver, 100000, '2) Alice(EOA) -> receiver (control)');
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