netbird/relay/healthcheck/doc.go
Zoltan Papp 0c039274a4
[relay] Feature/relay integration (#2244)
This update adds new relay integration for NetBird clients. The new relay is based on web sockets and listens on a single port.

- Adds new relay implementation with websocket with single port relaying mechanism
- refactor peer connection logic, allowing upgrade and downgrade from/to P2P connection
- peer connections are faster since it connects first to relay and then upgrades to P2P
- maintains compatibility with old clients by not using the new relay
- updates infrastructure scripts with new relay service
2024-09-08 12:06:14 +02:00

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Go

/*
The `healthcheck` package is responsible for managing the health checks between the client and the relay server. It
ensures that the connection between the client and the server are alive and functioning properly.
The `Sender` struct is responsible for sending health check signals to the receiver. The receiver listens for these
signals and sends a new signal back to the sender to acknowledge that the signal has been received. If the sender does
not receive an acknowledgment signal within a certain time frame, it will send a timeout signal via timeout channel
and stop working.
The `Receiver` struct is responsible for receiving the health check signals from the sender. If the receiver does not
receive a signal within a certain time frame, it will send a timeout signal via the OnTimeout channel and stop working.
In the Relay usage the signal is sent to the peer in message type Healthcheck. In case of timeout the connection is
closed and the peer is removed from the relay.
*/
package healthcheck