MultiAddr problem

[driftluo]

With the use of Multiaddr, the official itself has also found some problems, and there are problems with their own descriptions that are missing and inaccurate, and there are proposals to solve them by some means.

Parity In the case that the proposal has not yet passed, a non-standard protocol such as x-parity-ws has been added for practical needs.

Now, we have to rethink, what are our real needs for this increasingly complex specification, and whether we need to really go further and further with non-standard or complex standards.

ref: multiformats/multiaddr#87
ref: libp2p/rust-libp2p#1093