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libp2p / go-libp2p-examples

Example libp2p applications
MIT License
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Bump github.com/libp2p/go-libp2p from 0.5.2 to 0.9.1 #179

Closed dependabot-preview[bot] closed 3 years ago

dependabot-preview[bot] commented 4 years ago

Bumps github.com/libp2p/go-libp2p from 0.5.2 to 0.9.1.

Release notes

Sourced from github.com/libp2p/go-libp2p's releases.

v0.9.1

This is a quick patch release to fix a couple of small but critical issues in 0.9.0:

  1. Fix a panic when a node is constructed without any listener addresses.
  2. Avoid leaking a goroutine if a peer connects to us and disconnects quickly.
  3. Emit address change events immediately when listen addresses are added and removed, instead of waiting for the periodic address change check to detect this.

v0.9.0

🚀🚀🚀🚀🚀 This is a feature-packed release! Read on to learn more about the changes. 🚀🚀🚀🚀🚀

📉 Decaying tags in the Connection Manager

This release introduces Decaying Tags in the Connection Manager interfaces. A decaying tag is one whose value automatically decays over time.

The actual application of the decay behaviour is encapsulated in a user-provided decaying function (DecayFn). The function is called on every tick (determined by the tag's Interval property), and returns either the new value of the tag, or whether it should be erased altogether.

We do not set values directly on a decaying tag. Rather, we "bump" decaying tags by a delta. Doing so calls the BumpFn with the old value and the delta, to determine the new value.

Such a pluggable design affords a great deal of flexibility and versatility. Behaviours that are straightforward to implement include:

  • Decay a tag by -1, or by half its current value, on every tick.
  • Every time a value is bumped, sum it to its current value.
  • Exponentially boost a score with every bump.
  • Sum the incoming score, but keep it within min, max bounds.

To use Decaying Tags, check if the Connection Manager supports them first via the SupportsDecay function.

Check the godocs in the connmgr package for more info.

🚪 Connection gating

This release adds interfaces for Connection Gating: middleware components that intercept connections at different stages and decide whether to ALLOW or BLOCK the connection. In contrast to Connection Managers, Connection Gaters are actively consulted throughout the dial/listen pipeline.

Connection Gaters can intercept connections at these stages:

  • InterceptPeerDial is called on an imminent outbound peer dial request, prior to the addresses of that peer being available/resolved. Blocking connections at this stage is typical for blacklisting scenarios.

  • InterceptAddrDial is called on an imminent outbound dial to a peer on a particular address. Blocking connections at this stage is typical for address filtering.

  • InterceptAccept is called as soon as a transport listener receives an inbound connection request, before any upgrade takes place. Transports who accept already secure and/or multiplexed connections (e.g. possibly QUIC) MUST call this method regardless, for correctness/consistency.

  • InterceptSecured is called for both inbound and outbound connections, after a security handshake has taken place and we've authenticated the peer.

  • InterceptUpgraded is called for inbound and outbound connections, after libp2p has finished upgrading the connection entirely to a secure, multiplexed channel.

See godocs for the ConnectionGater interface for more info.

Migration/adoption notes

The old filter.Filters construct is still available, and behind the scenes, go-libp2p translates it to a connmgr.ConnectionGater that intercepts only address dials, and evaluates them against the Filters.

... (truncated)
Commits
  • 9370679 Merge pull request #943 from libp2p/fix/record-panic
  • 01da330 fix: don't try to marshal a nil record
  • aa60461 Merge pull request #941 from libp2p/test/peer-records-no-listen-addrs
  • 15637fc Merge pull request #942 from libp2p/fix/peer-handler-empty
  • e3a983a fix: don't leak a goroutine if a peer connects and immediately disconnects
  • 82c11bc sleep longer in test
  • bd9e7b5 detect listen addr changes in BasicHost
  • 3364dcc make test fail to demonstrate issue
  • 0d6e02e add test to demo missing peer records after listen
  • 7abe2e4 release v0.9.0: upgrade dependencies. (#937)
  • Additional commits viewable in compare view


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