2d83725c09
Previously we would increase a counter / gauge / histogram on each received identify information. These metrics are missleading, as e.g. they depend on the identify interval and don't represent the set of currently connected peers.
With this commit, identify information is tracked for the currently connected peers only. Instead of an increase on each received identify information, metrics represent the status quo (Gauge).
Example:
```
\# HELP libp2p_libp2p_identify_remote_protocols Number of connected nodes supporting a specific protocol, with "unrecognized" for each peer supporting one or more unrecognized protocols...
\# TYPE libp2p_libp2p_identify_remote_protocols gauge
libp2p_libp2p_identify_remote_protocols_total{protocol="/ipfs/id/push/1.0.0"} 1
libp2p_libp2p_identify_remote_protocols_total{protocol="/ipfs/id/1.0.0"} 1
libp2p_libp2p_identify_remote_protocols_total{protocol="/ipfs/ping/1.0.0"} 1
libp2p_libp2p_identify_remote_protocols_total{protocol="unrecognized"} 1
\# HELP libp2p_libp2p_identify_remote_listen_addresses Number of connected nodes advertising a specific listen address...
\# TYPE libp2p_libp2p_identify_remote_listen_addresses gauge
libp2p_libp2p_identify_remote_listen_addresses_total{listen_address="/ip4/tcp"} 1
libp2p_libp2p_identify_remote_listen_addresses_total{listen_address="/ip4/udp/quic"} 1
\# HELP libp2p_libp2p_identify_local_observed_addresses Number of connected nodes observing the local node at a specific address...
\# TYPE libp2p_libp2p_identify_local_observed_addresses gauge
libp2p_libp2p_identify_local_observed_addresses_total{observed_address="/ip4/tcp"} 1
```
Pull-Request: #3325.
Examples
A set of examples showcasing how to use rust-libp2p.
Getting started
Individual libp2p features
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Chat A basic chat application demonstrating libp2p and the mDNS and Gossipsub protocols.
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Distributed key-value store A basic key value store demonstrating libp2p and the mDNS and Kademlia protocol.
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File sharing application Basic file sharing application with peers either providing or locating and getting files by name.
While obviously showcasing how to build a basic file sharing application with the Kademlia and Request-Response protocol, the actual goal of this example is to show how to integrate rust-libp2p into a larger application.
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IPFS Kademlia Demonstrates how to perform Kademlia queries on the IPFS network.
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IPFS Private Implementation using the gossipsub, ping and identify protocols to implement the ipfs private swarms feature.
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Ping Small
pingclone, sending a ping to a peer, expecting a pong as a response. See tutorial for a step-by-step guide building the example. -
Rendezvous Rendezvous Protocol. See specs.