p2p: Improve error handling during handshake:

Introduce a new entry status, INCOMPATIBLE_ENTRY. Entries with this
status will not increase the failure attempts, instead, they will persist in
the routing table until replaced by a new peer. This feature is useful for
seeding and the lookup process.

Add a boolean value to the VerAck message to indicate whether the
version is accepted or not.

1 files changed, 7 insertions, 2 deletions

diff --git a/p2p/src/message.rs b/p2p/src/message.rs
index 9e73809..3779cc1 100644
--- a/p2p/src/message.rs
+++ b/p2p/src/message.rs
@@ -62,9 +62,14 @@ pub struct VerMsg {
     pub protocols: HashMap<ProtocolID, VersionInt>,
 }
 
-/// VerAck message acknowledging the receipt of a Version message.
+/// VerAck message acknowledges the receipt of a Version message. The message
+/// consists of the peer ID and an acknowledgment boolean value indicating
+/// whether the version is accepted.
 #[derive(Decode, Encode, Debug, Clone)]
-pub struct VerAckMsg(pub PeerID);
+pub struct VerAckMsg {
+    pub peer_id: PeerID,
+    pub ack: bool,
+}
 
 /// Shutdown message.
 #[derive(Decode, Encode, Debug, Clone)]