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switch to websockets #358
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switch to websockets #358
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@@ -107,20 +107,159 @@ export class Network { | |||
} | |||
} | |||
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/** | |||
* | |||
*/ | |||
export class ExplorerNetwork extends Network { |
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I think we should keep both classes, for explorers that may not support websockets, or just to give the option to users
async awaitWebSocketStatus(status, errMessage) { | ||
for (let i = 0; i < 100; i++) { | ||
if (this.ws.readyState === status) { | ||
break; | ||
} | ||
await sleep(100); | ||
} | ||
if (this.ws.readyState !== status) { | ||
throw new Error(errMessage); | ||
} | ||
} |
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Use onopen event
async sendAndWaitForAnswer(method, params) { | ||
let attempt = 1; | ||
const maxAttempts = 10; | ||
// milliseconds | ||
const maxAwaitTime = 600 * 1000; | ||
const frequency = 100; | ||
while (attempt <= maxAttempts) { | ||
let receivedInvalidAnswer = false; | ||
const [id, ws_that_sent] = await this.send(method, params); | ||
for (let i = 0; i < Math.floor(maxAwaitTime / frequency); i++) { | ||
const res = this.cachedResults[id]; | ||
if (res !== undefined) { | ||
delete this.cachedResults[id]; | ||
if (res.error) { | ||
await sleep(1000); | ||
receivedInvalidAnswer = true; | ||
break; | ||
} | ||
return res; | ||
} | ||
await sleep(frequency); | ||
// If connection got closed while sending do not wait until timeout | ||
if (ws_that_sent !== this.ws) { | ||
break; | ||
} | ||
} | ||
debugWarn( | ||
DebugTopics.NET, | ||
'Failed send attempt for ' + method, | ||
'attempt ' + | ||
attempt + | ||
'/' + | ||
maxAttempts + | ||
' received an invalid answer: ' + | ||
receivedInvalidAnswer | ||
); | ||
attempt += 1; | ||
} | ||
throw new Error('Failed to communicate with the explorer'); | ||
} |
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Instead of making heavy use of sleep
, this should use some form of observer/event and be refactored in another class
let attempt = 1; | ||
const maxAttempts = 10; | ||
// milliseconds | ||
const maxAwaitTime = 600 * 1000; |
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We shouldn't have a maxAwaitTime, we should only abort if the websocket closes
Abstract
Replace the legacy HTTP requests based system with a websocket implementation.
Testing
At the moment this is testable only on mainnet (Duddino's testnet explorer needs to be updated still).
What I suggest for testing: