# \#rust **URL:** https://forum.dfinity.org/tag/rust/56.md [Latest](https://forum.dfinity.org/latest.md) · [Categories](https://forum.dfinity.org/categories.md) · [Tags](https://forum.dfinity.org/tags.md) --- ## [ICP for Developers is Very Confusing - Some Help Please](https://forum.dfinity.org/t/icp-for-developers-is-very-confusing-some-help-please/74083)
**Author:** [@josephgranata](https://forum.dfinity.org/u/josephgranata)\ **Replies:** 11\ **Last updated:** [July 2, 2026, 9:49pm UTC](https://forum.dfinity.org/t/icp-for-developers-is-very-confusing-some-help-please/74083 "2026-07-02T21:49:11Z")
Folks, It has been some time since I engaged with the IC community of developers, last time was the end of last year when I was doing security audits of the IC code. Since then a lot has happened in the blockchain worl… --- ## [ckLightning: Lightning ↔ IC liquidity pools mainnet integration](https://forum.dfinity.org/t/cklightning-lightning-ic-liquidity-pools-mainnet-integration/68362)
**Author:** [@iljabvh](https://forum.dfinity.org/u/iljabvh)\ **Replies:** 0\ **Last updated:** [May 5, 2026, 6:12am UTC](https://forum.dfinity.org/t/cklightning-lightning-ic-liquidity-pools-mainnet-integration/68362 "2026-05-05T06:12:21Z")
ckBTC: the gap Bitcoin is the most secure cryptographic asset, and DFINITY’s Internet Computer has tapped this potential through its Bitcoin API infrastructure, allowing IC users to access and control funds on the Bitcoi… --- ## [Exploring Wasm Component Model and WASI](https://forum.dfinity.org/t/exploring-wasm-component-model-and-wasi/51430)
**Author:** [@berestovskyy](https://forum.dfinity.org/u/berestovskyy)\ **Replies:** 10\ **Last updated:** [March 10, 2026, 11:47pm UTC](https://forum.dfinity.org/t/exploring-wasm-component-model-and-wasi/51430 "2026-03-10T23:47:57Z")
Hey everyone, Quick update on something exciting we’ve been looking into! TL;DR We’ve been exploring the WebAssembly Component Model (think of it as Wasm’s standard library format) and WASI (Wasm’s standard System Inte… --- ## [Ic-dbms 0.6 - What's New Since Launch](https://forum.dfinity.org/t/ic-dbms-0-6-whats-new-since-launch/65051)
**Author:** [@veeso](https://forum.dfinity.org/u/veeso)\ **Replies:** 2\ **Last updated:** [March 3, 2026, 1:36pm UTC](https://forum.dfinity.org/t/ic-dbms-0-6-whats-new-since-launch/65051 "2026-03-03T13:36:54Z")
Hello everyone, I’m the author of ic-dbms, an open-source Rust framework for building relational databases inside Internet Computer canisters. I released 0.1 Back in December with the core (CRUD, transactions, foreign … --- ## [icyDB 0.10.0 - Index Key Ordering](https://forum.dfinity.org/t/icydb-0-10-0-index-key-ordering/64256)
**Author:** [@borovan3](https://forum.dfinity.org/u/borovan3)\ **Replies:** 0\ **Last updated:** [February 16, 2026, 3:48pm UTC](https://forum.dfinity.org/t/icydb-0-10-0-index-key-ordering/64256 "2026-02-16T15:48:36Z")
I don’t know why indexes were not orderable (hashed) but apparently it’s a problem. Premature optimisation I guess. Anyway, now they arent, here’s the latest features courtesy of Codex. https://github.com/dragginzgame… --- ## [DFINITY DFX and Developer Tools Compatibility with Mac OS Tahoe 26.2](https://forum.dfinity.org/t/dfinity-dfx-and-developer-tools-compatibility-with-mac-os-tahoe-26-2/63025)
**Author:** [@josephgranata](https://forum.dfinity.org/u/josephgranata)\ **Replies:** 4\ **Last updated:** [January 20, 2026, 4:09pm UTC](https://forum.dfinity.org/t/dfinity-dfx-and-developer-tools-compatibility-with-mac-os-tahoe-26-2/63025 "2026-01-20T16:09:53Z")
Dear DFINITY and Fellow Developers, After some minor issues Mac OS Tahoe, the latest one from Apple is fairly stable and I am using it in a desktop Mac with no issues, it is in fact quite good, although I am not a fan o… --- ## [Introducing Kosh Wallet – A Truly Decentralized Multi-Chain Wallet](https://forum.dfinity.org/t/introducing-kosh-wallet-a-truly-decentralized-multi-chain-wallet/59433)
**Author:** [@Rachit2323](https://forum.dfinity.org/u/Rachit2323)\ **Replies:** 0\ **Last updated:** [October 31, 2025, 9:23pm UTC](https://forum.dfinity.org/t/introducing-kosh-wallet-a-truly-decentralized-multi-chain-wallet/59433 "2025-10-31T21:23:21Z")
Hey everyone I’m excited to share what we’ve been building — Kosh Wallet, a multi-chain decentralized wallet currently live on Hoodi Testnet, Solana Testnet, and Stellar Testnet! Kosh Wallet uses threshold cryptography … --- ## [Announcing ic-sql-migrate, a Rust library that helps you run schema migrations on SQL databases](https://forum.dfinity.org/t/announcing-ic-sql-migrate-a-rust-library-that-helps-you-run-schema-migrations-on-sql-databases/58669)
**Author:** [@kristofer](https://forum.dfinity.org/u/kristofer)\ **Replies:** 0\ **Last updated:** [October 8, 2025, 9:29am UTC](https://forum.dfinity.org/t/announcing-ic-sql-migrate-a-rust-library-that-helps-you-run-schema-migrations-on-sql-databases/58669 "2025-10-08T09:29:54Z")
Hi! @sgaflv has built the excellent wasi2ic tool that allows canisters compiled to WASI to run on ICP. This opens the door for running any third party tool or platform that supports compiling to WASI, including SQLite. F… --- ## [Can we please get threshold ECDSA signing support for secp256r1 (P-256) on ICP?](https://forum.dfinity.org/t/can-we-please-get-threshold-ecdsa-signing-support-for-secp256r1-p-256-on-icp/57862)
**Author:** [@yinks002](https://forum.dfinity.org/u/yinks002)\ **Replies:** 1\ **Last updated:** [September 22, 2025, 6:05pm UTC](https://forum.dfinity.org/t/can-we-please-get-threshold-ecdsa-signing-support-for-secp256r1-p-256-on-icp/57862 "2025-09-22T18:05:21Z")
Following up on the icert post ICert , Decentralized Cetificate Authority ICP really needs threshold ECDSA support for secp256r1 (P-256). secp256k1 works for Bitcoin/Ethereum, but P-256 is the universal standard for X.… --- ## [Cannot upgrade my dApp - 503 Service Unavailable, unable to buffer body](https://forum.dfinity.org/t/cannot-upgrade-my-dapp-503-service-unavailable-unable-to-buffer-body/55827)
**Author:** [@let4be](https://forum.dfinity.org/u/let4be)\ **Replies:** 16\ **Last updated:** [September 12, 2025, 1:16pm UTC](https://forum.dfinity.org/t/cannot-upgrade-my-dapp-503-service-unavailable-unable-to-buffer-body/55827 "2025-09-12T13:16:21Z")
As of 8/21/2025 I can no longer upgrade my dApp on the ICP mainnet, canister id t5cvz-wiaaa-aaaaa-qag4q-cai subnet snjp4-xlbw4-mnbog-ddwy6-6ckfd-2w5a2-eipqo-7l436-pxqkh-l6fuv-vae WASM binary file is quiet weighty ~11m… --- ## [Introducing the LLM Canister: Deploy AI agents with a few lines of code](https://forum.dfinity.org/t/introducing-the-llm-canister-deploy-ai-agents-with-a-few-lines-of-code/41424)
**Author:** [@ielashi](https://forum.dfinity.org/u/ielashi)\ **Replies:** 76\ **Last updated:** [September 1, 2025, 2:58am UTC](https://forum.dfinity.org/t/introducing-the-llm-canister-deploy-ai-agents-with-a-few-lines-of-code/41424 "2025-09-01T02:58:36Z")
Hey everyone! Based on the discussions we’ve been having at the DeAI working group, I’m happy to share an announcement regarding building AI agents on the IC. tl;dr You can now access LLMs from within your canisters wi… --- ## [Stable Structures - Increasing max\_size on upgrade](https://forum.dfinity.org/t/stable-structures-increasing-max-size-on-upgrade/55608)
**Author:** [@frederico02](https://forum.dfinity.org/u/frederico02)\ **Replies:** 2\ **Last updated:** [August 18, 2025, 2:02pm UTC](https://forum.dfinity.org/t/stable-structures-increasing-max-size-on-upgrade/55608 "2025-08-18T14:02:25Z")
we’re using stable-structures in our rust canisters. Is it safe to change the max\_size of a bounded type? e.g change MAX\_VALUE\_SIZE to 150 and then upgrade the canister? const MAX\_VALUE\_SIZE: u32 = 140; #\[derive(Seri… --- ## [ICP Vetkey Quickstart Guide](https://forum.dfinity.org/t/icp-vetkey-quickstart-guide/43354)
**Author:** [@Typonomy](https://forum.dfinity.org/u/Typonomy)\ **Replies:** 2\ **Last updated:** [July 30, 2025, 11:13am UTC](https://forum.dfinity.org/t/icp-vetkey-quickstart-guide/43354 "2025-07-30T11:13:47Z")
Vetkeys Demystified: Encrypting Data in Your ICP App If you’re building an app on the Internet Computer (ICP) that requires encrypting user data, you’ve likely heard about vetkeys. They offer a powerful, decentralized … --- ## [Introducing \`ic-test\` – A Tool for Testing Cross-Chain IC Projects](https://forum.dfinity.org/t/introducing-ic-test-a-tool-for-testing-cross-chain-ic-projects/43479)
**Author:** [@sgaflv](https://forum.dfinity.org/u/sgaflv)\ **Replies:** 2\ **Last updated:** [July 2, 2025, 10:08am UTC](https://forum.dfinity.org/t/introducing-ic-test-a-tool-for-testing-cross-chain-ic-projects/43479 "2025-07-02T10:08:29Z")
Hey everyone! We’re Stan and Ulan, and we’ve been working on a new testing tool called ic-test – a command-line utility designed to simplify testing for cross-chain projects written in Rust. If you’re working with Inter… --- ## [Seeking Full-Time ICP Developer Opportunities](https://forum.dfinity.org/t/seeking-full-time-icp-developer-opportunities/49667)
**Author:** [@Rachit2323](https://forum.dfinity.org/u/Rachit2323)\ **Replies:** 1\ **Last updated:** [June 5, 2025, 7:29pm UTC](https://forum.dfinity.org/t/seeking-full-time-icp-developer-opportunities/49667 "2025-06-05T19:29:04Z")
Hi everyone, I’m Rachit Sharma — a blockchain engineer currently building real, production-ready decentralized infrastructure on the Internet Computer Protocol (ICP). :link: EVM ↔ Non-EVM Bridge on ICP (In Progress) Lea… --- ## [Is it possible to check when a subnet went down for maintenance in the past?](https://forum.dfinity.org/t/is-it-possible-to-check-when-a-subnet-went-down-for-maintenance-in-the-past/43938)
**Author:** [@frederico02](https://forum.dfinity.org/u/frederico02)\ **Replies:** 5\ **Last updated:** [April 17, 2025, 8:01am UTC](https://forum.dfinity.org/t/is-it-possible-to-check-when-a-subnet-went-down-for-maintenance-in-the-past/43938 "2025-04-17T08:01:36Z")
I’m looking for timestamps of when subnets went down and back up again for maintenance. I have a normal server that calls some canisters and every now and again we’re getting a CallFailed response. I’m curious if the tim… --- ## [Cross canister query calls](https://forum.dfinity.org/t/cross-canister-query-calls/41138)
**Author:** [@aligatorr89](https://forum.dfinity.org/u/aligatorr89)\ **Replies:** 16\ **Last updated:** [April 1, 2025, 7:02am UTC](https://forum.dfinity.org/t/cross-canister-query-calls/41138 "2025-04-01T07:02:10Z")
How to do a cross canister query call ? For example I would like to check icrc1\_balance\_of to ledger canister from my canister. I tried to use ic\_cdk::call but it doesn’t work for normal queries, only for composite que… --- ## [Getting the init archive settings of a ledger canister](https://forum.dfinity.org/t/getting-the-init-archive-settings-of-a-ledger-canister/41390)
**Author:** [@frederico02](https://forum.dfinity.org/u/frederico02)\ **Replies:** 5\ **Last updated:** [March 7, 2025, 10:28am UTC](https://forum.dfinity.org/t/getting-the-init-archive-settings-of-a-ledger-canister/41390 "2025-03-07T10:28:58Z")
Hi, Is there a way to get the archive settings of my icrc ledger canister? I dont have the the deploy script i used anymore so I’m curious if there is another way to get the settings that i used during deployment? --- ## [Canbench: State Persistence, Caller Configuration, and Extended Metrics in canbench for ICP Canisters](https://forum.dfinity.org/t/canbench-state-persistence-caller-configuration-and-extended-metrics-in-canbench-for-icp-canisters/41846)
**Author:** [@vicky0004](https://forum.dfinity.org/u/vicky0004)\ **Replies:** 3\ **Last updated:** [March 5, 2025, 9:52am UTC](https://forum.dfinity.org/t/canbench-state-persistence-caller-configuration-and-extended-metrics-in-canbench-for-icp-canisters/41846 "2025-03-05T09:52:17Z")
Hi everyone, I’m currently using canbench to benchmark my ICP canisters and have a few questions that I couldn’t find clear answers to: 1. State Persistence If the canister’s state persists between the execution of di… --- ## [Question about \`inspect\_message\` and \`in\_replicated\_execution\` behavior](https://forum.dfinity.org/t/question-about-inspect-message-and-in-replicated-execution-behavior/40212)
**Author:** [@bdemann](https://forum.dfinity.org/u/bdemann)\ **Replies:** 5\ **Last updated:** [February 25, 2025, 8:05pm UTC](https://forum.dfinity.org/t/question-about-inspect-message-and-in-replicated-execution-behavior/40212 "2025-02-25T20:05:37Z")
Hi everyone, I’ve been exploring the behavior of the in\_replicated\_execution method in the rust cdk and noticed something unexpected regarding its execution mode. Based on the IC interface spec, I was under the impressi… --- ## [Pocket IC - deploy SNS and complete launch process](https://forum.dfinity.org/t/pocket-ic-deploy-sns-and-complete-launch-process/40679)
**Author:** [@frederico02](https://forum.dfinity.org/u/frederico02)\ **Replies:** 8\ **Last updated:** [February 12, 2025, 9:21am UTC](https://forum.dfinity.org/t/pocket-ic-deploy-sns-and-complete-launch-process/40679 "2025-02-12T09:21:58Z")
Hi, Has anyone managed to deploy an SNS in pocket IC and get it to the final stage ( point 11 ) of this document. Stages of an SNS launch | Internet Computer --- ## [What is the best practice for huge data queries?](https://forum.dfinity.org/t/what-is-the-best-practice-for-huge-data-queries/40840)
**Author:** [@AliSci](https://forum.dfinity.org/u/AliSci)\ **Replies:** 5\ **Last updated:** [February 5, 2025, 2:22pm UTC](https://forum.dfinity.org/t/what-is-the-best-practice-for-huge-data-queries/40840 "2025-02-05T14:22:08Z")
In such cases when I have big queries is it better to just paginate it, or can I just allow to query all. --- ## [Cannot find a good example how to handle HTTP POST in Rust(update)](https://forum.dfinity.org/t/cannot-find-a-good-example-how-to-handle-http-post-in-rust-update/38567)
**Author:** [@let4be](https://forum.dfinity.org/u/let4be)\ **Replies:** 3\ **Last updated:** [January 31, 2025, 9:57am UTC](https://forum.dfinity.org/t/cannot-find-a-good-example-how-to-handle-http-post-in-rust-update/38567 "2025-01-31T09:57:40Z")
I need to implement http\_request\_update but there’s NO documentation available What’s going on with HTTPS gateways and incoming requests | Internet Computer ?.. --- ## [Rust Developer - Looking for a Talented IC Fellow](https://forum.dfinity.org/t/rust-developer-looking-for-a-talented-ic-fellow/28108)
**Author:** [@josephgranata](https://forum.dfinity.org/u/josephgranata)\ **Replies:** 7\ **Last updated:** [January 14, 2025, 9:42am UTC](https://forum.dfinity.org/t/rust-developer-looking-for-a-talented-ic-fellow/28108 "2025-01-14T09:42:45Z")
Hello everyone, I am looking for an advanced Rust developer who knows the IC and has done at least some programming with it already. We won a DFINITY Grant late last year, and are developing an App for Notes using the I… --- ## [Introducing Alexandria: A sane way to use the Internet](https://forum.dfinity.org/t/introducing-alexandria-a-sane-way-to-use-the-internet/39503)
**Author:** [@evanmcfarland](https://forum.dfinity.org/u/evanmcfarland)\ **Replies:** 8\ **Last updated:** [January 10, 2025, 1:59pm UTC](https://forum.dfinity.org/t/introducing-alexandria-a-sane-way-to-use-the-internet/39503 "2025-01-10T13:59:52Z")
Alexandria’s pre-alpha launch is happening tomorrow, January 1st, 12AM UCT. Following over 2 years of continuous development, we now initialize the Alexandria token mechanism and suite of pilot apps. There’s already a … --- ## [Module imports function '\_\_wbindgen\_object\_drop\_ref' from '\_\_wbindgen\_placeholder\_\_' that is not exported by the runtime](https://forum.dfinity.org/t/module-imports-function-wbindgen-object-drop-ref-from-wbindgen-placeholder-that-is-not-exported-by-the-runtime/33980)
**Author:** [@ydr990318](https://forum.dfinity.org/u/ydr990318)\ **Replies:** 5\ **Last updated:** [December 10, 2024, 10:51pm UTC](https://forum.dfinity.org/t/module-imports-function-wbindgen-object-drop-ref-from-wbindgen-placeholder-that-is-not-exported-by-the-runtime/33980 "2024-12-10T22:51:05Z")
Hey guys, here is a problem, I built a project and the compilation passed, but an error was reported during local deploy, here is the error message: Error: Failed while trying to deploy canisters. Caused by: Failed whil… --- ## [Simulating SNS Governance with pocket-ic](https://forum.dfinity.org/t/simulating-sns-governance-with-pocket-ic/29614)
**Author:** [@frederico02](https://forum.dfinity.org/u/frederico02)\ **Replies:** 14\ **Last updated:** [December 10, 2024, 9:25am UTC](https://forum.dfinity.org/t/simulating-sns-governance-with-pocket-ic/29614 "2024-12-10T09:25:02Z")
I have a separate canister that pulls neuron data from our sns governance canister. As part of testing we want to do some integration testing. To do this, we require to either simulate or mock the sns\_goverenance caniste… --- ## [Fairbid, Auction Marketplace with Cross-Chain Payments](https://forum.dfinity.org/t/fairbid-auction-marketplace-with-cross-chain-payments/38292)
**Author:** [@mervan](https://forum.dfinity.org/u/mervan)\ **Replies:** 0\ **Last updated:** [December 4, 2024, 10:11pm UTC](https://forum.dfinity.org/t/fairbid-auction-marketplace-with-cross-chain-payments/38292 "2024-12-04T22:11:08Z")
Fairbid: A Decentralized Auction Marketplace Fairbid is a decentralized peer-to-peer auction marketplace offering transparent, fee-free, and cross-chain transactions. The platform supports multiple auction formats, cater… --- ## [How to generate delegated identity on server and send to browser](https://forum.dfinity.org/t/how-to-generate-delegated-identity-on-server-and-send-to-browser/25334)
**Author:** [@rosarp](https://forum.dfinity.org/u/rosarp)\ **Replies:** 33\ **Last updated:** [December 2, 2024, 10:54am UTC](https://forum.dfinity.org/t/how-to-generate-delegated-identity-on-server-and-send-to-browser/25334 "2024-12-02T10:54:04Z")
I am trying to make requests on behalf of the user from the server and from the user’s browser using the same principal… To achieve this I’m trying following steps. I have generated Identity on server (axum) for incomi… --- ## [Rust f64 safety and performance](https://forum.dfinity.org/t/rust-f64-safety-and-performance/37347)
**Author:** [@frederico02](https://forum.dfinity.org/u/frederico02)\ **Replies:** 1\ **Last updated:** [November 15, 2024, 12:42pm UTC](https://forum.dfinity.org/t/rust-f64-safety-and-performance/37347 "2024-11-15T12:42:33Z")
Hi, On other blockchains I’ve typically stayed away from using floats. I know there was an update in July in the Cyclotron update with the performance of floats so I’m curious - are floats safe and performant on ICP? [Next page](https://forum.dfinity.org/tag/rust/56.md?match_all_tags=true&page=1&tags%5B%5D=rust)