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Unattended Listener Error #1221

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EvilJordan opened this issue Dec 31, 2020 · 3 comments
Closed

Unattended Listener Error #1221

EvilJordan opened this issue Dec 31, 2020 · 3 comments
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bug Verified to be an issue. fixed/complete This Bug is fixed or Enhancement is complete and published.

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@EvilJordan
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I wrote a listener for my contract that's always up and running. Everything is still in testing so there's not a lot of transactions happening. I left the listener running for a few hours and came back to this (just one of many that are basically the same):

(node:30426) UnhandledPromiseRejectionWarning: Error: bad response (status=302, headers={"date":"Thu, 31 Dec 2020 04:11:07 GMT","content-type":"text/html; charset=utf-8","transfer-encoding":"chunked","connection":"close","set-cookie":"__cfduid=d73076d79159381bf848f0fff560f193f1609387867; expires=Sat, 30-Jan-21 04:11:07 GMT; path=/; domain=.etherscan.io; HttpOnly; SameSite=Lax","location":"//api.etherscan.io/apierror.html?aspxerrorpath=/api","access-control-allow-origin":"*","access-control-allow-headers":"Content-Type","access-control-allow-methods":"GET, POST, OPTIONS","x-frame-options":"SAMEORIGIN","cf-cache-status":"DYNAMIC","cf-request-id":"075897139200000dbe4d8b8000000001","expect-ct":"max-age=604800, report-uri=\"https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct\"","server":"cloudflare","cf-ray":"60a12798ed800dbe-IAD"}, body="<html><head><title>Object moved</title></head><body>\n<h2>Object moved to <a href=\"//api.etherscan.io/apierror.html?aspxerrorpath=/api\">here</a>.</h2>\n</body></html>\n", requestBody=null, requestMethod="GET", url="https://api-rinkeby.etherscan.io/api?module=proxy&action=eth_blockNumber&apikey=REDACTED", code=SERVER_ERROR, version=web/5.0.5)
    at Logger.makeError (/node_modules/@ethersproject/logger/lib/index.js:179:21)
    at Logger.throwError (/node_modules/@ethersproject/logger/lib/index.js:188:20)
    at /node_modules/@ethersproject/web/lib/index.js:223:36
    at step (/node_modules/@ethersproject/web/lib/index.js:33:23)
    at Object.next (/node_modules/@ethersproject/web/lib/index.js:14:53)
    at fulfilled (/node_modules/@ethersproject/web/lib/index.js:5:58)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
(node:30426) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 227

I assume I can fix this myself by wrapping the listener in a try/catch, but thought I'd mention in case it's something you'd like to be aware of.

HAPPY NEW YEAR!!
@andrevmatos andrevmatos mentioned this issue Jan 12, 2021
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@ricmoo ricmoo added investigate Under investigation and may be a bug. on-deck This Enhancement or Bug is currently being worked on. labels Jan 12, 2021
@andrevmatos andrevmatos mentioned this issue Jan 12, 2021
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@ricmoo ricmoo added bug Verified to be an issue. and removed investigate Under investigation and may be a bug. labels Jan 13, 2021
@ricmoo
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ricmoo commented Jan 13, 2021

I do believe this is the same problem as #1208. Please see that issue for updates. :)

ricmoo added a commit that referenced this issue Jan 13, 2021
@ricmoo
Fixed abundant UnhandledRejectErrors in provider polling (#1084, #1208,
74470de 
#1221, #1235).
ricmoo added a commit that referenced this issue Jan 13, 2021
@ricmoo
Better provider internal block management (#1084, #1208, #1221, #1235).
20f6e16
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ricmoo commented Jan 14, 2021

This should be addressed in 5.0.26. Please try it out and let me know. :)

@ricmoo ricmoo added fixed/complete This Bug is fixed or Enhancement is complete and published. and removed on-deck This Enhancement or Bug is currently being worked on. labels Jan 15, 2021
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ricmoo commented Jan 19, 2021

Closing this now, as I think the problem has been resolved. If not, please re-open.

Thanks! :)

@ricmoo ricmoo closed this as completed Jan 19, 2021
This was referenced Mar 12, 2021
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Handle getBlockNumber errors on polling
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@ricmoo @EvilJordan