EIP-1193: standard provider API #6170
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| const BlockTracker = require('eth-block-tracker') | ||
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|
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| /** | ||
| * Creates a block tracker that sends platform events on success and failure | ||
| */ | ||
| module.exports = function createBlockTracker (args, platform) { | ||
| const blockTracker = new BlockTracker(args) | ||
| blockTracker.on('latest', () => { | ||
| if (platform && platform.sendMessage) { | ||
| platform.sendMessage({ action: 'ethereum-ping-success' }) | ||
| } | ||
| }) | ||
| blockTracker.on('error', () => { | ||
| if (platform && platform.sendMessage) { | ||
| platform.sendMessage({ action: 'ethereum-ping-error' }) | ||
| } | ||
| }) | ||
| return blockTracker | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| class StandardProvider { | ||
| _isConnected | ||
| _provider | ||
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| constructor (provider) { | ||
| this._provider = provider | ||
| this._onMessage('ethereumpingerror', this._onClose.bind(this)) | ||
| this._onMessage('ethereumpingsuccess', this._onConnect.bind(this)) | ||
| window.addEventListener('load', () => { | ||
| this._subscribe() | ||
| this._ping() | ||
| }) | ||
| } | ||
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| _onMessage (type, handler) { | ||
| window.addEventListener('message', function ({ data }) { | ||
| if (!data || data.type !== type) return | ||
| handler.apply(this, arguments) | ||
| }) | ||
| } | ||
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| _onClose () { | ||
| if (this._isConnected === undefined || this._isConnected) { | ||
| this._provider.emit('close', { | ||
| code: 1011, | ||
| reason: 'Network connection error', | ||
| }) | ||
| } | ||
| this._isConnected = false | ||
| } | ||
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| _onConnect () { | ||
| !this._isConnected && this._provider.emit('connect') | ||
| this._isConnected = true | ||
| } | ||
|
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| async _ping () { | ||
| try { | ||
| await this.send('net_version') | ||
| window.postMessage({ type: 'ethereumpingsuccess' }, '*') | ||
| } catch (error) { | ||
| window.postMessage({ type: 'ethereumpingerror' }, '*') | ||
| } | ||
| } | ||
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| _subscribe () { | ||
| this._provider.on('data', (error, { method, params }) => { | ||
| if (!error && method === 'eth_subscription') { | ||
| this._provider.emit('notification', params.result) | ||
| } | ||
| }) | ||
| } | ||
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| /** | ||
| * Initiate an RPC method call | ||
| * | ||
| * @param {string} method - RPC method name to call | ||
| * @param {string[]} params - Array of RPC method parameters | ||
| * @returns {Promise<*>} Promise resolving to the result if successful | ||
| */ | ||
| send (method, params = []) { | ||
| if (method === 'eth_requestAccounts') return this._provider.enable() | ||
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| return new Promise((resolve, reject) => { | ||
| try { | ||
| this._provider.sendAsync({ method, params, beta: true }, (error, response) => { | ||
| error = error || response.error | ||
| error ? reject(error) : resolve(response) | ||
| }) | ||
| } catch (error) { | ||
| reject(error) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
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| /** | ||
| * Converts a legacy provider into an EIP-1193-compliant standard provider | ||
| * @param {Object} provider - Legacy provider to convert | ||
| * @returns {Object} Standard provider | ||
| */ | ||
| export default function createStandardProvider (provider) { | ||
| const standardProvider = new StandardProvider(provider) | ||
| const sendLegacy = provider.send | ||
| provider.send = (methodOrPayload, callbackOrArgs) => { | ||
| if (typeof methodOrPayload === 'string' && !callbackOrArgs || Array.isArray(callbackOrArgs)) { | ||
| return standardProvider.send(methodOrPayload, callbackOrArgs) | ||
| } | ||
| return sendLegacy.call(provider, methodOrPayload, callbackOrArgs) | ||
| } | ||
| return provider | ||
| } | ||
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If may, why use
beta: trueand not the classicjsonrpc: '2.0'?I think this the cause of this issue : MM 6.2.1 sends invalid JSONRPC requests to private network