[feature request]: Low-Level Connection Management

[kumavis]

idea:

some additional controls over establishing/denying connections

• hooks for denying connections before they are established (when possible)
• ConnectionManager configuration that can limit the number of connections per transport

usecase:

MetaMask is building an Ethereum light client for the browser using libp2p.
We intend to use webrtc which is resource intensive and can only safely support 2-5 active connections.
We need to be able to deny incoming webrtc connection attempts after some threshold.

[mitra42]

This is similar to a comment I made in another thread recently, Its not clear to me why webrtc can't deny connections above a certain number which would ideally solve the crashing problem in browsers.

[pgte]

@kumavis that's great feedback, thanks!
Opened these issues on libp2p-connection-manager.

[daviddias]

@kumavis if you have some spare cycles, test out the connection manager already released in libp2p 0.22 and that will also get released in js-ipfs 0.30 ipfs/js-ipfs#1375

[jacobheun]

We are aiming to slot connection gating into the 0.30 release.