migrate to go-libp2p-core.

[raulk]

Prerequisite for go-ipfs migration to go-libp2p-core.

TODO:

• Merge and release migrate to go-libp2p-core go-ipfs-routing#22 first, then update dependencies here and remove the replace directive.

[hannahhoward]

@raulk looks like still waiting on the go-ipfs-routing PR first, but can you offer some context here? Is there anything I should know about the difference between go-libp2p and go-libp2p-core?

[raulk]

Oh, yeah. Sorry for that. Been so immersed in this that I assumed the world revolved around this refactor :-)

We’ve basically consolidated the many interfaces and abstractions that were spread across tens of repos into a single one, called go-libp2p-core. The change is backwards compatible: we’ve aliased old types into their new counterparts, and marked the former as deprecated.

But since I was at it, I decided to migrate go-ipfs to the new types to eschew references to deprecated stuff.

Here’s the full context: libp2p/go-libp2p#602

[Stebalien]

Blocked until we cut a release.