ICRC-145: HTTP accessible icrc1:logo #145
Description
This will simplify integrating ICRC tokens into apps and wallets.
Token canister should handle HTTP path /icrc1_logo and:
- return image content with correct mime-type, if it's a Data URL
- redirect with HTTP 302 header to the URL, if logo is set as URL
- return HTTP 404, if there is no logo image
Add cache headers(1 day? 1 week?) so that browsers make fewer requests to the canister.
Integrator usage
Download logo from URL
https://<token-canister-id>.ic0.app/icrc1_logo
or just show it using <img> tag
<img src="https://<token-canister-id>.ic0.app/icrc1_logo">