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p2p/discover: improve documentation of codecV5

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This commit is contained in:
Felix Lange 2025-03-18 16:22:44 +01:00
parent 5007814c6b
commit cf3b5db446
1 changed files with 10 additions and 3 deletions
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13
p2p/discover/v5_udp.go
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@ -50,13 +50,20 @@ const (
// encoding/decoding and with the handshake; the UDPv5 object handles higher-level concerns.
type codecV5 interface {
// Encode encodes a packet.
Encode(enode.ID, string, v5wire.Packet, *v5wire.Whoareyou) ([]byte, v5wire.Nonce, error)
//
// If the underlying type of 'p' is *v5wire.Whoareyou, a Whoareyou challenge packet is
// encoded. If the 'challenge' parameter is non-nil, the packet is encoded as a
// handshake message packet. Otherwise, the packet will be encoded as an ordinary
// message packet.
Encode(id enode.ID, addr string, p v5wire.Packet, challenge *v5wire.Whoareyou) ([]byte, v5wire.Nonce, error)
// Decode decodes a packet. It returns a *v5wire.Unknown packet if decryption fails.
// The *enode.Node return value is non-nil when the input contains a handshake response.
Decode([]byte, string) (enode.ID, *enode.Node, v5wire.Packet, error)
Decode(b []byte, addr string) (enode.ID, *enode.Node, v5wire.Packet, error)
CurrentChallenge(enode.ID, string) *v5wire.Whoareyou
// CurrentChallenge returns the most recent WHOAREYOU challenge that was encoded to given node.
// This will return a non-nil value if there is an active handshake attempt with the node, and nil otherwise.
CurrentChallenge(id enode.ID, addr string) *v5wire.Whoareyou
}
// UDPv5 is the implementation of protocol version 5.