Hi, is anyone experienced with using encryption in nodejs on Cloudflare? I'm working with cloudfl

Hi, is anyone experienced with using encryption in nodejs on Cloudflare?

I'm working with cloudflare and want to use

createCipheriv

createCipheriv

createCipheriv

createCipheriv and

createDecipheriv

createDecipheriv

createDecipheriv

createDecipheriv from the nodejs

crypto

crypto

crypto

crypto module.

However, Cloudflare doesn't support these yet as shown in their documentation:
https://developers.cloudflare.com/workers/runtime-apis/nodejs/crypto/

I get this error:
Error: [unenv] crypto.createCipheriv is not implemented yet!

What alternatives can I use instead?

Thanks in advance!

Cloudflare Docs

Crypto · Cloudflare Workers docs

The node:crypto module provides cryptographic functionality that includes a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions.

XXulo Hi, is anyone experienced with using encryption in nodejs on Cloudflare? I'm ...

Brett Willis•12/6/24, 8:05 PM

Workers supports the Web Crypto APIs. Your equivalents there are crypto.subtle.encrypt()crypto.subtle.encrypt() and crypto.subtle.decrypt()crypto.subtle.decrypt().
However the Web Crypto API does not support all of the algorithms available on NodeJS.
So it depends on which algorithm you're after but take a look at the docs:
https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/encrypt

MDN Web Docs

SubtleCrypto: encrypt() method - Web APIs | MDN

The encrypt() method of the SubtleCrypto interface encrypts data.

BBrett Willis Workers supports the Web Crypto APIs. Your equivalents there are `crypto.subtle....

XuloOP•12/6/24, 8:24 PM

Thanks! I appreciate it, I'll take a look

ᎡᎡᴜᴛʜʟᴇssŦᴀᴄᴛɪᴏɴ No I moved on to other projects. The key here is that the CNAME effectively auth...

johtso•12/6/24, 11:13 PM

aha, this looks promising https://developers.cloudflare.com/hyperdrive/configuration/connect-to-private-database/

Warren•12/7/24, 2:44 AM

I am using Workers in Workflows and I am running up against the 1000 subrequests limit. my question is is there a way to clearly see what are the subrequests made in a Worker?

so for context, my worker is trying to do long running job in batches. the issue is I am using another Durable Object as a rate limiter. the problem with rate limiting is I can’t estimate how frequently the rate limiter will be called in a single worker run.

now that I’ve gotten rid of the rate limiter, it seems to not run into the subrequest issue anymore.

my feedback would be:

if a Worker in a Workflow has hit the subrequest limit, it seems pointless to retry since any retries would also by definition hit the same limit
I personally feel that this subrequest limit really dampens the promise of Cloudflare platform being serverless and scales infinitely, esp if it includes calling internal Cloudflare resources like Durable

elpupper•12/7/24, 4:03 AM

Any resources on setting up ci/cd on a remote repository that is not github or gitlabs?

alex (he/him)•12/7/24, 8:24 AM

I really like the new option to start multiple workers with wrangler in the same command. Are there any plans to support multiple primary workers with different ports, to expose their fetch handlers?

BBrett Willis Workers supports the Web Crypto APIs. Your equivalents there are `crypto.subtle....

XuloOP•12/7/24, 12:05 PM

Unfortunately this doesn't work for me because I can't use async in my fromDriverfromDriver and toDrivertoDriver. I tried using CryptoJS. Is this possible? This works locally, however I get this error in Cloudflare server logs TypeError: Cannot read properties of undefined (reading 'encrypt')TypeError: Cannot read properties of undefined (reading 'encrypt')

Am i doing this wrong?

Thanks in advance!

Peps•12/7/24, 5:20 PM

anyone happen to know whether things passed to

waitUntil

waitUntil

will still get to complete if a worker threw a uncaught exception?

XXulo Unfortunately this doesn't work for me because I can't use async in my `fromDriv...

Brett Willis•12/7/24, 5:44 PM

I haven't used CryptoJS, but it looks deprecated. And I haven't used drizzle ORM to tell you if there's a way to do async.
However have you considered returning a plain string type from the ORM, and then having an async helper function to decrypt it in your application code?

Mitya•12/7/24, 10:15 PM

Hi everyone - for some reason, when I set up a hello world Worker, then run it locally via npm run devnpm run dev, I just get a spinning browser tab with no content. Nor do I see any requests come in to my worker in the terminal (other workers show the URI + HTTP code when requests come in.) Repro:

npm create cloudflare@latest -- test-workernpm create cloudflare@latest -- test-worker
choose the hello world options; lang = JavaScript; deploy/version control = no
cd test-workercd test-worker
npm run devnpm run dev
Wrangler says "Ready on http://127.0.0.1:8787"
Visit that URL; expecting "Hello world!"; getting the above problem.
Is there a server status issue with CF?

D Trombett•12/7/24, 10:18 PM

npm run devnpm run dev runs locally so any problem with CF should be unrelated

Mitya•12/7/24, 10:18 PM

Yeah that's what I thought

Mitya•12/7/24, 10:25 PM

Sorry, false alarm - for some reason my machine failed to release the port when I stopped the worker before, so I had multiple processes claiming port 8787. Killing these solves the problem

BBrett Willis I haven't used CryptoJS, but it looks deprecated. And I haven't used drizzle ORM...

XuloOP•12/8/24, 10:27 AM

Yea you are right, CryptoJS is deprecated.

I'm not sure what you mean. Do you mean manually encrypting data before inserting it into the database and then decrypting it when retrieving it? That’s possible but it’s not very practical and can be quite error-prone. But if there is no other way, that's what I can do in the meantime

Here’s what I had before:

This used encryption with

createCipheriv

createCipheriv

and works poerfectly, but unfortunately that’s not supported in Cloudflare

Yash Bindal (yB)•12/8/24, 1:19 PM

Can I create Ai agents with worker
my concern is worker doesn't have that much time

YYash Bindal (yB)Can I create Ai agents with worker my concern is worker doesn't have that much ...

Ashley•12/8/24, 9:01 PM

What do you mean? There’s no limit on Workers for duration, and you’re only charged for CPU time. With AI workflows, you’re primarily waiting on I/O, so you’ll be using very little CPU typically.

AAshley What do you mean? There’s no limit on Workers for duration, and you’re only char...

Hello, I’m Allie!•12/9/24, 12:02 AM

Note that there is a 30 second CPU Time limit, which might be what they were referring to

johtso•12/9/24, 1:19 AM

just set up hyperdrive through a tunnel to a local posgres database, this is amazing!

HHello, I’m Allie!Note that there is a 30 second CPU Time limit, which might be what they were ref...

Isaac McFadyen•12/9/24, 1:59 AM

^ and also note that CPU time is not the same as wall clock time

Jjohtso just set up hyperdrive through a tunnel to a local posgres database, this is ama...

Yash Bindal (yB)•12/9/24, 3:08 AM

fafwe•12/9/24, 3:15 AM

is it possible to change a environment variable in the worker?

Ffafwe is it possible to change a environment variable in the worker?

Isaac McFadyen•12/9/24, 3:20 AM

No Kinda? Environment variable changes require a re-deploy of the Worker.

Isaac McFadyen•12/9/24, 3:21 AM

You could technically redeploy the Worker via the Cloudflare API from within the Worker itself, if you really wanted to, but generally other (easier) methods are recommended first, like storing the value in KV.

IIsaac McFadyen ^ and also note that CPU time is not the same as wall clock time

Yash Bindal (yB)•12/9/24, 3:40 AM

oh is it I thout it is. So I also have another thing where I am doing a sync between my databases
but the external req can take only 100 items per minute
So I tried making cloudflare worker sleep but it failed

Currently doing it using cache state management but too much KV read write

YYash Bindal (yB)oh is it I thout it is. So I also have another thing where I am doing a sync bet...

Ashley•12/9/24, 8:12 AM

Does it need to happen synchronously, before the HTTP response ends? If not, you could use Workflows and do batches of 100 and then a sleep. Alternatively, you could use Queues and publish a message per item and have some rate limiting, but Workflows will be better imo. Only drawback will be you’d need to create sub Workflows at a certain point with the current step limit (e.g. you’d have an effective cap of 51,200 inserts per Workflow)

AngusMa•12/9/24, 2:32 PM

Dev tools disappear

KenKiyosaki•12/9/24, 4:36 PM

Anyone experienced "XMLHttpRequest is undefined" error when trying to use fetch?

Bradley•12/9/24, 4:39 PM

Hello, I'm trying to use Browser Rendering to replace a puppeteer ec2 instance, and one difference I've noticed is that in Cloudflare the scrollbars are getting captured when taking a screenshot. I don't see any options or differences from the ec2 side that is different, except for manually setting headless: trueheadless: true in the browser creation in ec2. But from what it looks like Cloudflare should be defaulting headless. Has anyone seen this issue and found a way to work around it? I'm logging out the browser version and seeing Chrome/120.0.6099.321Chrome/120.0.6099.321 , so maybe it's not headless (or it could be "new" headless, we're likely using old headless on ec2). Update I was able to hack this by using an evaluate call to set overflow hidden on html, but would love a better solution.

Aster•12/9/24, 6:18 PM

Hey, can I rename a worker from wrangler.toml without issues? even if it has bindings, and different environments?

I notice it creates a fresh new worker and doesn't delete the old one

AAster Hey, can I rename a worker from wrangler.toml without issues? even if it has bin...

Bradley•12/9/24, 6:43 PM

You can rename in the dashboard, then update the wrangler file.

Aster•12/9/24, 6:57 PM

Thanks, gonna try

HS•12/9/24, 8:35 PM

Does the Workers Logs has free tier as well? On the main Workers page it lists that the free Workers tier supports "200,000 log events per day".

But I'm confused if enabling "Workers Logs" (including Invocation logs) under "Observability" in Worker settings is free or not?

CCodex one caveat to this is that it appears that the fetchMock provided by miniflare /...

Codex•12/9/24, 9:40 PM

@cloudflare/vitest-pool-workers@cloudflare/vitest-pool-workers: As of 0.5.330.5.33 the AbortSignalAbortSignal support has now been added and released, was pretty interesting and fun to work on and hopefully this helps others that are wanting to test their workers correctly handle these

masd4•12/10/24, 10:28 AM

these docs aren't clear enough for me, does this mean that if I set a process.env variable it could potentially leak into entirely unrelated workers, meaning even workers with a different name? https://developers.cloudflare.com/workers/runtime-apis/nodejs/process/

Mmasd4 these docs aren't clear enough for me, does this mean that if I set a process.en...

Brett Willis•12/10/24, 10:46 AM

Variables in the global scope can be shared only in the same instance of the same worker (think: same process on same machine). Not between different Workers (with different name).
This typically only occurs when multiple requests reach the same data center within a few seconds, then they may get routed to the same Worker instance.

�

😈 Donkey 💫•12/10/24, 10:58 AM

from what I researching
https://developers.cloudflare.com/workers/runtime-apis/rpc/#promise-pipelining

This (Send functions as parameters) only works with wrangler experimental, until V8 engine supports it officially, am I right?

Cloudflare Docs

Remote-procedure call (RPC) · Cloudflare Workers docs

The built-in, JavaScript-native RPC system built into Workers and Durable Objects.

�

😈 Donkey 💫•12/10/24, 11:02 AM

and it seems this forwarding stub https://developers.cloudflare.com/workers/runtime-apis/rpc/#forwarding-rpc-stubs

does not work with Durable Object?

Abdul•12/10/24, 1:13 PM

Hello

Cloudflare recently started supporting Deploying your web applications ( Nextjs) on workers

that is crazy!

i mean, anybody have tested it? what is the difference between deploying your nextjs app on cloudfare pages vs Workers?

AAbdul Hello Cloudflare recently started supporting Deploying your web applications ( ...

Peps•12/10/24, 1:15 PM

?crossposting

SuperHelpflare•12/10/24, 1:15 PM

Please do not post your question in multiple channels/post it multiple times per the rules at #

welcome-and-rules. It creates confusion for people trying to help you and doesn't get your issue or question solved any faster.

PPeps ?crossposting

Abdul•12/10/24, 1:21 PM

Sorry sir.

Since i was not aware which channel my question should go in

I wont repeat this sorry again

AAbdul Hello Cloudflare recently started supporting Deploying your web applications ( ...

Ashley•12/10/24, 1:26 PM

https://developers.cloudflare.com/workers/static-assets/compatibility-matrix/ has a good overview, at least in terms of features

Cloudflare Docs

Workers vs. Pages (compatibility matrix) · Cloudflare Workers docs

Compatibility matrix for asset hosting on Cloudflare Workers and Pages.

AAshley https://developers.cloudflare.com/workers/static-assets/compatibility-matrix/ ha...

Abdul•12/10/24, 1:38 PM

Is it misleading mate?
Or am i getting it wrong?

It says workers dont support file-based routing.
But i just created a /testing route in my nextjs deployed to workers

And it worked.
So what does this docs meant?

Ashley•12/10/24, 1:50 PM

The matrix is for the core Pages vs Worker compat, so it’s talking about file-based routing with a Worker without a framework - there’s a lot of differences. If you want Next.js specifics, you’d need to compare what OpenNext supports versus what Next.js itself supports.

KenKiyosaki•12/10/24, 2:38 PM

Can someone please tell me how I can fix "XMLHttpRequest: is undefined" error in nextjs? This happens when I use "fetch" in API routes

KenKiyosaki•12/10/24, 2:38 PM

Why is this happening and why is no one fixing it?

KenKiyosaki•12/10/24, 2:38 PM

@Community time

KenKiyosaki•12/10/24, 2:39 PM

@cb @codefraw

zegevlier•12/10/24, 2:44 PM

?pings

SuperHelpflare•12/10/24, 2:44 PM

Please do not ping community members for non-moderation reasons. Doing so will not solve your issue faster and will make people less likely to want to help you.

Hi, is anyone experienced with using encryption in nodejs on Cloudflare? I'm working with cloudfl

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