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eth-bsc-swap-contracts's Introduction

ETH BSC Swap Contracts

Security Report

Overview

ETH BSC Swap Contracts are responsible for registering swap pairs and swapping assets between ETH and BSC.

Register swap pair

Users register swap pair for erc20 token on ETH via ETHSwapAgent(createSwapPair) if token is not registered.
Swap service will monitor the SwapPairRegister event and create swap pair on BSC:
1. create an BEP20 token on BSC
2. record the relation between erc20 token and bep20 token.

Swap from ETH to BSC

Once swap pair is registered, users can swap tokens from ETH to BSC.

Users call swapBSC2ETH via ETHSwapAgent and specify erc20 token address, amount and swap fee.
Swap service will monitor the SwapStarted event and call fillETH2BSCSwap via BSCSwapAgent to mint corresponding bep20 tokens to the same address that initiate the swap.

Swap from BSC to ETH

Once swap pair is registered, users can swap tokens from BSC to ETH.

Users call swapBSC2ETH via BSCSwapAgent and specify bep20 token address, amount and swap fee. Bep20 tokens will be burned.
Swap service will monitor the SwapStarted event and call fillBSC2ETHSwap via BSCSwapAgent to transfer corresponding erc20 tokens to the same address that initiate the swap.

Generate contracts from templates

npm run generate

Test

Generate test contracts from templates:

npm run generate-test

Run tests:

npm run truffle:test

Run coverage:

npm run coverage

eth-bsc-swap-contracts's People

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eth-bsc-swap-contracts's Issues

Swap From BSC to ETH Inavlid RPC Response

Contract: ETHSwapAgent and BSCSwapAgent
√ Register Standard ERC20 and create swap pair (3102ms)
√ Swap from ETH to BSC (2469ms)
1) Swap from BSC to ETH
> No events were emitted
√ Set BSC to ETH swap fee (498ms)
√ Set ETH to BSC swap fee (447ms)
√ ETH ownership (649ms)
√ BSC ownership (771ms)

6 passing (9s)
1 failing

Contract: ETHSwapAgent and BSCSwapAgent
Swap from BSC to ETH:
Error: Invalid JSON RPC response: ""
at Object.InvalidResponse (node_modules\web3-core-helpers\src\errors.js:42:16)
at XMLHttpRequest.request.onreadystatechange (node_modules\web3-providers-http\src\index.js:106:32)
at XMLHttpRequestEventTarget.dispatchEvent (node_modules\xhr2-cookies\xml-http-request-event-target.ts:44:13)
at XMLHttpRequest._setReadyState (node_modules\xhr2-cookies\xml-http-request.ts:219:8)
at XMLHttpRequest._onHttpRequestError (node_modules\xhr2-cookies\xml-http-request.ts:379:8)
at ClientRequest. (node_modules\xhr2-cookies\xml-http-request.ts:266:37)
at ClientRequest.emit (node:events:327:20)
at Socket.socketErrorListener (node:_http_client:478:9)
at Socket.emit (node:events:327:20)
at emitErrorNT (node:internal/streams/destroy:188:8)
at emitErrorCloseNT (node:internal/streams/destroy:153:3)
at processTicksAndRejections (node:internal/process/task_queues:80:21)

BSC转到ETH不成功？

从ETH转到BSC上正常，但是从BSC转回到ETH上时，只在BSC中执行了销毁操作，没有在ETH上归还相应的资产。
查询日志，发现服务在ETH上获取blockinfo 失败，但是可以肯定eth_provide配置是可用的

Swap service example

Is there any example for swap service node?

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