我有一个节点js进程,它创建一个web3 websocket连接,如下所示:
web3 = new Web3('ws://localhost:7545')
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当进程完成时(我发送一个SIGTERM),它不会退出,而是永远挂起而没有控制台输出.
我注册了SIGINT和SIGTERM一个听众在什么处理过程中具有突出以观察process._getActiveRequests()和process._getActiveHandles(),我看到以下内容:
Socket {
connecting: false,
_hadError: false,
_handle:
TCP {
reading: true,
owner: [Circular],
onread: [Function: onread],
onconnection: null,
writeQueueSize: 0 },
<snip>
_peername: { address: '127.0.0.1', family: 'IPv4', port: 7545 },
<snip>
}
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为了完整性,这里是监听信号的代码:
async function stop() {
console.log('Shutting down...')
if (process.env.DEBUG) console.log(process._getActiveHandles())
process.exit(0)
}
process.on('SIGTERM', async () => {
console.log('Received SIGTERM')
await stop()
})
process.on('SIGINT', async () => {
console.log('Received SIGINT')
await stop()
})
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看起来web3正在打开一个套接字,这是有道理的,因为我从未告诉它关闭连接.通过文档和谷歌搜索,它看起来不像web3对象的close或end方法.
手动关闭stop …
我有一个以太坊合约,其事件定义如下:
event Apple(address indexed a, address b, address c);
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该事件被触发,我可以在交易收据中看到日志。
通过 web3,当我尝试解析收据中的日志时,我能够检索事件参数,但看起来 的值a始终相同。
// compiled is the built contract. address is the contract address
const contract = new web3.eth.Contract(compiled.abi, address)
const eventJsonInterface = _.find(
contract._jsonInterface,
o => o.name === 'Apple' && o.type === 'event',
)
const log = _.find(
receipt.logs,
l => l.topics.includes(eventJsonInterface.signature)
)
web3.eth.abi.decodeLog(eventJsonInterface.inputs, log.data, log.topics)
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我最终得到的是:
Result {
'0': '0x42087b16F33E688a9e73BFeef94F8F2bd2BfC98f',
'1': '0xfc36bFe712f30F75DF0BA9A60A109Ad51ac7Ca38',
'2': '0x6915d2f3D512F7CfEF968f653D1cA3ed4489798C',
__length__: 3,
a: '0x42087b16F33E688a9e73BFeef94F8F2bd2BfC98f',
b: '0xfc36bFe712f30F75DF0BA9A60A109Ad51ac7Ca38',
c: '0x6915d2f3D512F7CfEF968f653D1cA3ed4489798C' }
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其中a触发的事件之间始终是相同的地址。我为每笔交易生成一个新合约,a …