Hi, Guys I’m trying to write a http canister with Motoko. After I deployed it to IC network, I got the “Body does not pass verification” error when I access from browser. Canister ID: p5th4-gyaaa-aaaal-qajkq-cai URL of problem: https://p5th4-gyaaa-aaaal-qajkq-cai.ic0.app The RAW URL works fine: h…

These articles will have some good info for you: [image] Service Worker Bug? Body does not pass verification Developers The NNS App isn’t using dfx’s dynamic asset canister, but rather has the assets hard-coded in it’s single backend canister, with it’s own implementation…

Thank you, I’ll read the threads first as well as the ic-certified-assets to get more background.

[image] skilesare: I’d love to see a reference implementation of a motoko file server Maybe too minimal to count as a “reference implementation”, but https://github.com/nomeata/motoko-certified-http could be a starting point.

This is great. I’ll use this for my http_request lecture for the bootcamp. It would also probably be worth a bounty to flesh it out to a full file server. One thing that has occurred to me on reading this is that it may be hard(impossible?) to do this for dynamic http responses. Say you serve a pa…

Correct, and one of my main criticisms of the whole “certified variables” approach to securing queries. I haven’t given up hope that we get proper, system-provided “certified queries” at some point, where the boundary node aggregates the query response from multiple nodes (multi- or threshold signat…

[image] skilesare: You wouldn’t be able to provide a certified tree with the content of the page because http_request is a query and you would not be able to update it You could use http_request_update :slightly_smiling_face:

@wewei For your original question, here are your possible next steps Read up on certified variable (videos and documentation) Look at rust asset canister for a reference implementation Decide if you need the performant certified queries ? Queries are performant but are hard to implement in a “s…

IMO a lot of important aspects are getting buried under this infamous error code body cannot be verified Insecurity of non-certified queries Difficulty in implementing certified response . (This is a known unspoken issue - designing certified queries is orders of magnitude more arduous than coding…

[image] faraz.shaikh: This is a known unspoken issue I keep talking about this issue all the time :slight_smile: (I wish someone at DFINITY would make this document public, it discusses the issue with certified variables, and might be helpful for anyone digging deeper. But a TL;DR of it is i…

I’m still a bit confused as to if this is natively handled or if it only works with the ICX proxy. Will this get hit for any HTTP request that is not a get natively? My particular use case involves images and having them return in query time is pretty important. Waiting for consensus is going to m…

The "Body does not pass verification" error from a Motoko canister

Developers

paulyoung March 2, 2022, 8:39pm 13

This was the last I heard from @faraz.shaikh:

Topic		Replies	Views
Service Worker Bug? Body does not pass verification Developers	23	3130	August 4, 2022
V1 http-request certification issue CDK	6	201	May 28, 2024
Announcing Motoko Server Motoko	30	1838	November 18, 2023
Front end Assets randomly fail to load with 500, other times it loads fine Developers Discussing	29	1584	January 7, 2022
Asset canister response "Response verification failed" / "Body does not pass verification" Developers asset-canister	4	408	July 24, 2025

The "Body does not pass verification" error from a Motoko canister

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