API on back-end IC: http_request and http_responce

Safik · June 20, 2021, 6:46pm

Me need to implement a REST API for project. How to send http request crud (Post, Get, Update, Delete) to the canister? How to form a response in the (motoko) canister code? There is one architectural solution. It is very bad: make a separate server (node js) that will receive requests from devices and the browser emulator will form them into the IC network.

paulyoung · June 20, 2021, 10:28pm

I think this should help: Is it possible to build a REST API in a Canister? - #2 by paulyoung

3cL1p5e7 · June 21, 2021, 4:02pm

@paulyoung is right
@Safik sample code for http_request handling on rust

github.com

dfinity/candid/blob/a555d77704d691bb8f34e21a049d44ba0acee3f8/tools/ui/src/didjs/lib.rs

use ic_cdk::export::candid::{
    candid_method, check_prog, export_service, CandidType, Deserialize, IDLProg, TypeEnv,
};

#[derive(CandidType, Deserialize)]
pub struct HeaderField(pub String, pub String);

#[derive(CandidType, Deserialize)]
pub struct HttpRequest {
    pub method: String,
    pub url: String,
    pub headers: Vec<HeaderField>,
    #[serde(with = "serde_bytes")]
    pub body: Vec<u8>,
}

#[derive(CandidType, Deserialize)]
pub struct HttpResponse {
    pub status_code: u16,
    pub headers: Vec<HeaderField>,

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API on back-end IC: http_request and http_responce

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