Support XinFin blockchain

[gzliudan]

The address prefix of XinFin blockchain is xdc, not 0x. So the truffle report below error when deploy contract:

Error: Given address "xdc0000000000000000000000000000000000000000" is not a valid Ethereum address.
    at Object.toChecksumAddress (<DIR>/node_modules/truffle/build/webpack:/node_modules/web3-utils/lib/index.js:263:1)
    at Method.outputBlockFormatter (<DIR>/node_modules/truffle/build/webpack:/node_modules/web3-core-helpers/lib/formatters.js:284:1)
    at Method.web3.eth.getBlock.method.outputFormatter (<DIR>/node_modules/truffle/build/webpack:/packages/interface-adapter/dist/shim/overloads/ethereum.js:38:1)
    at Method.formatOutput (<DIR>/node_modules/truffle/build/webpack:/node_modules/web3-eth/node_modules/web3-core-method/lib/index.js:148:1)
    at sendTxCallback (<DIR>/node_modules/truffle/build/webpack:/node_modules/web3-eth/node_modules/web3-core-method/lib/index.js:531:1)
    at <DIR>/node_modules/truffle/build/webpack:/node_modules/web3-core-requestmanager/lib/index.js:305:1
    at <DIR>/node_modules/web3-provider-engine/index.js:234:9
    at <DIR>/node_modules/async/internal/once.js:12:16
    at replenish (<DIR>/node_modules/async/internal/eachOfLimit.js:61:25)
    at <DIR>/node_modules/async/internal/eachOfLimit.js:71:9
    at eachLimit (<DIR>/node_modules/async/eachLimit.js:43:36)
    at <DIR>/node_modules/async/internal/doLimit.js:9:16
    at end (<DIR>/node_modules/web3-provider-engine/index.js:211:5)
    at Request._callback (<DIR>/node_modules/web3-provider-engine/subproviders/rpc.js:72:5)
    at Request.self.callback (<DIR>/node_modules/request/request.js:185:22)
    at Request.emit (node:events:527:28)
    at Request.<anonymous> (<DIR>/node_modules/request/request.js:1154:10)
    at Request.emit (node:events:527:28)
    at IncomingMessage.<anonymous> (<DIR>/node_modules/request/request.js:1076:12)
    at Object.onceWrapper (node:events:641:28)
    at IncomingMessage.emit (node:events:539:35)
    at endReadableNT (node:internal/streams/readable:1345:12)
Truffle v5.5.29 (core: 5.5.29)
Node v16.16.0

JSSONRPC request:

curl -X POST https://rpc.apothem.network/ -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x0", false],"id":1}'

JSSONRPC response:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "difficulty": "0x1",
    "extraData": "0x00000000000000000000000000000000000000000000000000000000000000003ea0a3555f9b1de983572bff6444aeb1899ec58c4f7900282f3d371d585ab1361205b0940ab1789c942a5885a8844ee5587c8ac5e371fc39ffe618960000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "gasLimit": "0x47b760",
    "gasUsed": "0x0",
    "hash": "0xbdea512b4f12ff1135ec92c00dc047ffb93890c2ea1aa0eefe9b013d80640075",
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "miner": "xdc0000000000000000000000000000000000000000",
    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "nonce": "0x0000000000000000",
    "number": "0x0",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "penalties": "0x",
    "receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
    "size": "0x29d",
    "stateRoot": "0x8e3faa435358e7027e68989700c2edd281c87518f82c127e8523df46c41c160f",
    "timestamp": "0x5d02164f",
    "totalDifficulty": "0x1",
    "transactions": [],
    "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "uncles": [],
    "validator": "0x",
    "validators": "0x"
  }
}

The miner is xdc0000000000000000000000000000000000000000, not 0x0000000000000000000000000000000000000000.

[haltman-at]

It's necessarily a little difficult to handle such violations of the JSON RPC standard. Is it possible that XinFin could change its behavior here to be conformant? I might suggest filing an issue with them...

[cliffoo]

Great! In the threads above @XinFinOrg shared their ethereum json rpc compatible endpoints, so nothing to do here I guess.