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metamask-extension/app/scripts/controllers/network/createJsonRpcClient.js
Erik Marks 088d4c34f1
Merge pull request from GHSA-c2xw-px2x-pr65
* Remove network config store
* Remove inline networks variable in network controller
* Re-key network controller 'rpcTarget' to 'rpcUrl'
* Require chainId in lookupNetwork, implement eth_chainId
* Require chain ID in network form
* Add alert, migrations, and tests
* Add chainId validation to addToFrequentRpcList
* Update public config state selector to match new network controller
state
* Use network enums in networks-tab.constants
* Ensure chainId in provider config is current
* Update tests
2020-10-06 15:27:02 -02:30

35 lines
1.4 KiB
JavaScript

import mergeMiddleware from 'json-rpc-engine/src/mergeMiddleware'
import createFetchMiddleware from 'eth-json-rpc-middleware/fetch'
import createBlockRefRewriteMiddleware from 'eth-json-rpc-middleware/block-ref-rewrite'
import createBlockCacheMiddleware from 'eth-json-rpc-middleware/block-cache'
import createInflightMiddleware from 'eth-json-rpc-middleware/inflight-cache'
import createBlockTrackerInspectorMiddleware from 'eth-json-rpc-middleware/block-tracker-inspector'
import providerFromMiddleware from 'eth-json-rpc-middleware/providerFromMiddleware'
import BlockTracker from 'eth-block-tracker'
export default function createJsonRpcClient ({ rpcUrl, chainId }) {
const fetchMiddleware = createFetchMiddleware({ rpcUrl })
const blockProvider = providerFromMiddleware(fetchMiddleware)
const blockTracker = new BlockTracker({ provider: blockProvider })
const networkMiddleware = mergeMiddleware([
createChainIdMiddleware(chainId),
createBlockRefRewriteMiddleware({ blockTracker }),
createBlockCacheMiddleware({ blockTracker }),
createInflightMiddleware(),
createBlockTrackerInspectorMiddleware({ blockTracker }),
fetchMiddleware,
])
return { networkMiddleware, blockTracker }
}
function createChainIdMiddleware (chainId) {
return (req, res, next, end) => {
if (req.method === 'eth_chainId') {
res.result = chainId
return end()
}
return next()
}
}