Block put with sha2-512

[richardschneider]

Version information: ipfs version 0.4.13

Type: Bug

Severity: High

Description:

A block put with sha2-512 returns an invalid CID. The returned CID starts with8. This is not a valid multicodec code!

POST http://localhost:5001/api/v0/block/put?mhtype=sha2-512
RSP {"Key":"8Vva8UXUZQVLNqYHCTqwxQg5m6ZrYXGaV731xAoefMjh6GmYbRVuFNadUKuZ8YFCDtx8qirW3BodmzcwG4z1Vg3Wmf","Size":5}

[Stebalien]

It looks like ipfs is trying to return a CIDv0 with a SHA2-512 hash (invalid). In this case, IPFS can't actually guess the correct IPLD block format (it can with CIDv0 because there's only one) so this command should return an error. (well, really, this shouldn't care about CIDs at all but... https://github.com/ipfs/go-ipfs/issues/4189)

The correct command would have a format=$CODEC parameter.

[richardschneider]

So what are the valid $CODEC values. I tried dag-pb and dag-cbor with no luck.

[Stebalien]

pb, cbor, raw.

[magik6k]

Fixed by #4563