feat: BSC support

[mburger81]

Hey as you told me previously your simple-pancake-sdk is deprecated and we should us this lib, also you told me
"my uniswap sdk I created actually now let’s you map custom networks with full contract addresses (which means it supports forks like pancake)", as I'm not an epxert on blockchain I understand there that I can use custom networks like BSC.

But when I try to do your angular example settings like this

this.uniswapDappSharedLogicContext = {

      supportedNetworkTokens: [
        {
          chainId: 0x38, // 56
          defaultInputToken: '0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c', // BNB
          defaultOutputToken: '0x1fd13bB00d80986adc121d5bEF287Bf2ED5C31AF', // GRY
          supportedTokens: [
            { contractAddress: '0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c' }, // BNB
            { contractAddress: '0x1fd13bB00d80986adc121d5bEF287Bf2ED5C31AF' }, // GRY
            { contractAddress: '0xd293a7064e7e3b61bfbf2728f976d2500206dc73' }, // GRF
            { contractAddress: '0x6813e7d721694d8f8a2990a3e0a389b326169c6e' }, // FDOX
            { contractAddress: '0x8a3937e12155e07f3a06a84ec4dfdd3ec40d1e6a' }, // Nigels
          ],
        }
      ],
      ethereumAddress: accounts[0],
      ethereumProvider: this.web3Service.provider
      // ,
      // theming: {
      //   backgroundColor: 'red',
      //   button: { textColor: 'white', backgroundColor: 'blue' },
      //   panel: { textColor: 'black', backgroundColor: 'yellow' },
      //   textColor: 'orange',
      // },
    };

I'm running always in the unsupported network error because the simple-uniswap-sdk checks also for chainId, like this and others
ETH.info(this.chainId);

[mburger81]

I checked the source code and so that we have for sure to setting NativeNetwork, but what I not understand, we try to use the angular components which mainly we configure the supportedNetworkTokens.

How should I configure the tokens with our custom BSC router?
can you perhaps help?
@vm06007
@joshstevens19

[mburger81]

@joshstevens19 @vm06007
So finally I understood when I would like to use your angular components I can configure the UniswapPairsettings also in the UniswapDappSharedLogiContext to configure. See below for configuration

But there are still two issues

1. in this scenario EthersProvider always calls InfuraProvider which doesn't work for BSC, I can omit this if I costumize
   uniswap-dapp-shared-logic to

if (this.supportedNetwork) {
      this._tokensFactoryPublic = new TokensFactoryPublic({
        chainId: this.chainId,
        providerUrl: 'https://bsc-dataseed1.defibit.io'
      });
    }

2. but at the end I'm running in the multi call into a ```
   UniswapError: invalid from or to contract tokens
   UniswapError: invalid from or to contract tokens

**BTW** I'm not sure what I have to configure  tor `factoryAddress` and `pairAddress`

this.uniswapDappSharedLogicContext = {

  supportedNetworkTokens: [
    {
      chainId: 56,
      defaultInputToken: '0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c', // BNB
      defaultOutputToken: '0x1fd13bB00d80986adc121d5bEF287Bf2ED5C31AF', // GRY
      supportedTokens: [
        { contractAddress: '0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c' }, // BNB
        { contractAddress: '0x1fd13bB00d80986adc121d5bEF287Bf2ED5C31AF' }, // GRY
      ]
    }
  ],
  ethereumAddress: accounts[0],
  ethereumProvider: this.web3Service.provider,
  settings: {
    slippage: 0.01  ,
    deadlineMinutes: 20,
    disableMultihops: false,
    uniswapVersions: [UniswapVersion.v2],
    cloneUniswapContractDetails: {
      v2Override: {
        routerAddress: "0x0317d3B54c4FF8050E30Fe0e56585d2179586580",
        factoryAddress: "0xc35dadb65012ec5796536bd9864ed8773abc74c4",
        pairAddress: "0xc35dadb65012ec5796536bd9864ed8773abc74c4"
      }
    },
    customNetwork: {
      nameNetwork: !testnet ? "bsc" : "bsctest",
      multicallContractAddress: !testnet
        ? "0xfF6FD90A470Aaa0c1B8A54681746b07AcdFedc9B"
        : "0x8F3273Fb89B075b1645095ABaC6ed17B2d4Bc576",
      nativeCurrency: {
        name: "BNB",
        symbol: "BNB"
      },
      nativeWrappedTokenInfo: {
        chainId: !testnet ? 56 : 97,
        contractAddress: "0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c",
        decimals: 18,
        symbol: "WBNB",
        name: "Wrapped BNB"
      }
    }
  },
  theming: {
    backgroundColor: 'red',
    button: { textColor: 'white', backgroundColor: 'blue' },
    panel: { textColor: 'black', backgroundColor: 'yellow' },
    textColor: 'orange',
  }
};

[vm06007]

factoryAddress and pairAddress of PancakeSwap:

      pairAddress: '0xca143ce32fe78f1f7019d7d551a6402fc5350c73',
      factoryAddress: '0xca143ce32fe78f1f7019d7d551a6402fc5350c73'

try to use this multicall address: 0x41263cba59eb80dc200f3e2544eda4ed6a90e76c

[mburger81]

@vm06007 thx you for your response

should be pairAddress and factoryAddress the same?

when I try this, I get two errors
1. MetaMask - RPC Error: Internal JSON-RPC error. {code: -32603, message: 'Internal JSON-RPC error.', data: {…}}
and as before
2. UniswapError: invalid from or to contract tokens

and I alsways have to set manually the provider url in the share lib

if (this.supportedNetwork) {
      this._tokensFactoryPublic = new TokensFactoryPublic({
        chainId: this.chainId,
        providerUrl: 'https://bsc-dataseed1.defibit.io'
      });
    }

EDIT:
I could resolve error 1 and I figured out that I can debug better the second error

It's comming from
https://github.com/uniswap-integration/simple-uniswap-sdk/blob/1629b680e615ce9851a4f7e7a3ba0187beac8261/src/factories/token/token.factory.ts#L80
and the error is
call revert exception (method="tryBlockAndAggregate(bool,(address,bytes)[])", errorArgs=null, errorName=null, errorSignature=null, reason=null, code=CALL_EXCEPTION, version=abi/5.5.0)

[vm06007]

@mburger81 Yes, factoryAddress usually includes pair code implementation, so they can stay the same, you might be missing the router address and you may need to specify the wethAddress of wrapped BNB token, here is my configuration for that:

      pairAddress: '0xca143ce32fe78f1f7019d7d551a6402fc5350c73',
      factoryAddress: '0xca143ce32fe78f1f7019d7d551a6402fc5350c73',
      routerAddress: '0x10ED43C718714eb63d5aA57B78B54704E256024E',
      daiAddress: '0x1AF3F329e8BE154074D8769D1FFa4eE058B1DBc3',
      wethAddress: '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c',

invalid from or to contract tokens sounds like the token addresses you are trying to pass for the trade might not be actual contracts on BSC

[mburger81]

@vm06007 I share with you all my configuration, I try to get work with PCK so once this is working I can try to get it work with our dex and our router

I really dont know what I'm missing

 this.uniswapDappSharedLogicContext = {

      supportedNetworkTokens: [
        {
          chainId: 56,
          defaultInputToken: '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c_ETH', // BNB
          defaultOutputToken: '0x0e09fabb73bd3ade0a17ecc321fd13a19e81ce82', // CAKE
          supportedTokens: [
            { contractAddress: '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c_ETH' }, // BNB
            { contractAddress: '0x0e09fabb73bd3ade0a17ecc321fd13a19e81ce82' }, // CAKE
          ]
        }
      ],
      ethereumAddress: accounts[0],
      ethereumProvider: this.web3Service.provider,
      settings: {
        slippage: 0.01  ,
        deadlineMinutes: 20,
        disableMultihops: false,
        uniswapVersions: [ UniswapVersion.v2 ],
        cloneUniswapContractDetails: {
          v2Override: {
            routerAddress: "0x10ED43C718714eb63d5aA57B78B54704E256024E",
            factoryAddress: "0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73",
            pairAddress: "0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73"
          }
        },
        customNetwork: {
          nameNetwork: !testnet ? "BSC Mainnet" : "BSC Testnet",
          // https://github.com/makerdao/multicall
          multicallContractAddress: !testnet
            ? "0x41263cba59eb80dc200f3e2544eda4ed6a90e76c"
            : "0xae11C5B5f29A6a25e955F0CB8ddCc416f522AF5C",
          nativeCurrency: {
            name: "BNB",
            symbol: "BNB"
          },
          nativeWrappedTokenInfo: {
            chainId: !testnet ? 56 : 97,
            contractAddress: "0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c",
            decimals: 18,
            symbol: "WBNB",
            name: "Wrapped BNB"
          }
        }
      },
      theming: {
        backgroundColor: 'red',
        button: { textColor: 'white', backgroundColor: 'blue' },
        panel: { textColor: 'black', backgroundColor: 'yellow' },
        textColor: 'orange',
      }
    };

[vm06007]

here is my configuration dynamic setup

    const details = chainDetails(
        provider, 
        chainId
    );

    const WETH_ADDRESS = details.wethAddress;
    const DAI_ADDRESS = details.daiAddress;

    const fromToken = findTokenStrict(details.tokensIn, fromCurrency, WETH_ADDRESS);
    const toToken = findTokenStrict(details.tokensOut, toCurrency, DAI_ADDRESS);

    const targets = {
        v2Override: {
            routerAddress: details.routerAddress,
            factoryAddress: details.factoryAddress,
            pairAddress: details.pairAddress,
        },
    };

    let customNetworkData;
    let providerUrl;

    if (chainId === 56) {
        (providerUrl = 'https://bsc-dataseed1.ninicoin.io'),
        (customNetworkData = {
            nameNetwork: 'Binance',
            multicallContractAddress: '0x65e9a150e06c84003d15ae6a060fc2b1b393342c',
            nativeCurrency: {
                name: 'BNB Token',
                symbol: 'BNB',
            },
            nativeWrappedTokenInfo: {
                chainId,
                contractAddress: '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c',
                decimals: 18,
                symbol: 'WBNB',
                name: 'Wrapped BNB',
            },
        });
    }

    try {
        const uniswapPair = new UniswapPair({
            fromTokenContractAddress: fromToken,
            toTokenContractAddress: toToken,
            ethereumAddress: userAddress,
            providerUrl,
            chainId,
            settings: new UniswapPairSettings({
                slippage: 0.01,
                deadlineMinutes: 15,
                disableMultihops,
                uniswapVersions: [UniswapVersion.v2],
                cloneUniswapContractDetails: targets,
                customNetwork: customNetworkData,
            }),
        });
        const pair = await uniswapPair.createFactory();
        return pair;
    } catch (e) {
        console.log(e);
    }

perhaps I've given wrong multicallContractAddress ?? try 0x65e9a150e06c84003d15ae6a060fc2b1b393342c

[mburger81]

Yeah the multicallContractAddress was the wrong address, strange I got the same as you send me before from this page
https://github.com/makerdao/multicall which seems the not right one.

I took a lot of time to give you a response because I would like to finish my implementation. I saw that the simple-uniswap-sdk works well with different chains, but the integration example doesnt work very well, so in the last days I took a couple of changes which I would like to push the next days

btw.
can you share with me also your configuration for the BSC TESTNET, still the same problem with unknown multicallAddress and whats about the router? is it the same as on BSC MAINNET?

thx @vm06007

[vm06007]

I'm not dealing with BSC testnet

[niZmosis]

If your looking for pancake swap on BSC, I have the addresses here #34

[RobAnon]

Took a very long time, but I found the solution. You have to use this list of multicall contracts, else it will fail.

[mburger81]

@vm06007 can you share the implementation of functions

• chainDetails
• findTokenStrict

[vm06007]

those are simple array lookup functions with .find

const chainDetails = (provider, chainId = 1) => {
    return (
        provider.supportedChains.find((chain) => chain.chainId === chainId)
    );
};

const findTokenStrict = (
    array,
    value,
    defaultValue
) => {
    const result = array.find((item) => item.value === value);
    return result?.token || defaultValue;
};