Http endpoint, pocket ic, and streaming response

[Gwojda]

Hey guys,
I’m trying to test using pocketic the stream features from http gateway announced here :

Announcing a new HTTP Gateway streaming protocol

Hello everyone, Nathan here from the Trust team [:wave:] I hope you are all having a great day building on the Internet Computer [:woman_astronaut:][:man_astronaut:] Today I’d like to introduce you all to a new HTTP Gateway streaming protocol. TLDR; The HTTP Gateway enables traditional web clients to interact with canisters using the standard HTTP protocol. Due to the IC’s 2MB response size limit, a streaming protocol is necessary to handle larger responses by breaking them into chunks. The cu…

Btw i found 2 differents documentation.:

The HTTP Gateway Protocol Specification | Internet Computer

HTTPS gateways and incoming requests | Internet Computer

Which define HttpResponse in a different way, one is using streaming_strategy field, and others does not define it anymore.

Question :
Which one shall we follow now ?
How to test with pocket ic this part ? ie : i insert by chunk a big file, and i want to serve the file on http endpoint, and use this http streaming feature to get the file.

Thanks !

[Gwojda]

im testing with this as example : ic/packages/pocket-ic/tests/tests.rs at 90c56a39f105c1f65553a81853564923eb0a922f · dfinity/ic · GitHub

but it’s not working at all on my side. subdomain formated like that : format!(“{}.raw.{}”, canister, gateway_host), is not working.
Can you help?

[NathanosDev]

I’m trying to test using pocketic the stream features from http gateway announced here

Have you implemented the streaming in your canister?

Which define HttpResponse in a different way, one is using streaming_strategy field, and others does not define it anymore.

The streaming_strategy field is optional and not used by the new streaming protocol. If you’ve implemented the new protocol, then you can drop the streaming_strategy field.

How to test with pocket ic this part ? ie : i insert by chunk a big file, and i want to serve the file on http endpoint, and use this http streaming feature to get the file.

Making a request against the HTTP endpoint should work fine.

im testing with this as example, but it’s not working at all on my side. subdomain formated like that : format!(“{}.raw.{}”, canister, gateway_host), is not working.

What do you mean by “it’s not working”?

[Gwojda]

Hey @NathanosDev
I’m finally able to query using pocketic my canister http endpoint correctly, but now my streaming is not working using streaming_strategy.
If it’s not anymore usefull, what’s the right way now to handle this ?

[Gwojda]

ah damn. I think this is the right way to do it now : response-verification/examples/http-certification/custom-assets/src/backend/src/lib.rs at main · dfinity/response-verification · GitHub ? Right ?

Can you please update documentation ? I mean, both solution are living here and there and i just completely messed up both solution… ahah
Thanks man !

[Gwojda]

Ok, i was just able to make it work as attempt using assert-certification. was way more easier using this library. Thanks for your work !
Btw, using this lib, assets are stored in heap ?