Worker throws "Network connection lost."

Developers Workers
1

Hello,

Sometimes my worker throws an exception “Network connection lost.”, I got it in the wrangler tail:

{"outcome":"ok","scriptName":null,"exceptions":[{"name":"Error","message":"Network connection lost.","timestamp":1626639666788}],"logs":[{"message":["Using cache: False"],"level":"log","timestamp":1626639666745}],"eventTimestamp":1626639666740,"event":{"request":{"url":"MY_URL","method":"GET","headers":{"accept":"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*","accept-charset":"iso-8859-1,utf-8;q=0.9,*;q=0.1","accept-encoding":"gzip","accept-language":"en","cf-connecting-ip":"CLIENT_IP","cf-int-smart-routing-table-id":"100","cf-ipcountry":"US","cf-ray":"REDACTED","cf-visitor":"{\"scheme\":\"http\"}","connection":"Keep-Alive","cookie":"REDACTED","host":"MY_URL","pragma":"no-cache","user-agent":"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)","x-forwarded-proto":"http","x-real-ip":"CLIENT_IP"},"cf":{"clientTcpRtt":1,"longitude":"REDACTED","httpProtocol":"HTTP/1.1","tlsCipher":"","continent":"NA","asn":REDACTED,"country":"US","tlsClientAuth":{"certIssuerDNLegacy":"","certIssuerSKI":"","certSubjectDNRFC2253":"","certSubjectDNLegacy":"","certFingerprintSHA256":"","certNotBefore":"","certSKI":"","certSerial":"","certIssuerDN":"","certVerified":"NONE","certNotAfter":"","certSubjectDN":"","certPresented":"0","certRevoked":"0","certIssuerSerial":"","certIssuerDNRFC2253":"","certFingerprintSHA1":""},"tlsVersion":"","colo":"IAD","timezone":"America/New_York","region":"Virginia","requestPriority":"","latitude":"REDACTED","city":"Ashburn","regionCode":"VA","postalCode":"REDACTED","metroCode":"REDACTED","edgeRequestKeepAliveStatus":1}}}}

This worker fetches the content from AWS S3 bucket, I have added a catch on fetch, but the code on catch is not executed, looks like it’s an error in the CloudFlare or client side.

request = await fetch(urlToRequest,{
      method: "GET",
      redirect: "follow"
    }).catch(error => {
      const message = `urlToRequest: ${urlToRequest}, Error from fetch: ${error}`
      console.log(`There has been a problem with fetch operation! ${message}`);
      event.waitUntil(logDatadog("fetchError", message, "null"));
    });

Can someone help me? Thanks

1 Like
2

I’m having the same issue. Do we know if that’s an issue with Cloudflare itself?

3

I’m having the same issue as well in the past couple days. It’s happening when my cron job runs the script.

4

Working for me now…I guess it was cloudflare bugging out? Working for you jmartins?

5

Yep, working for me now too. Looks like an issue with their cron jobs.

1 Like
6

The same issue today.

7

same issue today. many times.

When I asked the service team about this problem before, they said it was a client-side problem, but I wonder how they will respond after today’s failure

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8

now it’s clear this issue from worker internal error

9

Same issue today

10

Any help?

11

Something new about this issue? I’m getting thousands of these errors per month.

12

It’s the same here; I often get the message Error: Network connection lost. I think the problem came from CF.