SignatureDoesNotMatch while using SeaweedFS

[Saranthyr]

Good day. Encountered a weird behaviour while using SeaweedFS S3 API, specifically - SignatureDoesNotMatch error while setting host to localhost and port to 8333 (s3 port). At the same time, when setting host to localhost:8333 and leaving port at default makes correct signature but adds additional :80 at the end of url (tested signature by hand by removing extra port). Will add screenshots later