1 files changed, 17 insertions, 3 deletions
diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index f20110a..147e560 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -147,6 +147,10 @@ pub(crate) enum ParsedMessage {
     Who(IdentityProof),
     /// Answers a WHO.
     Me(IdentityProof),
+    /// Asks for a PONG with this nonce, over the same path (`transport::paths`).
+    Ping(u64),
+    /// Answers a PING.
+    Pong(u64),
 }
 
 /// A node's proof that it holds the key of its node ID (`identity`), sending from its
@@ -270,6 +274,8 @@ pub(crate) enum MessageKind {
     Blob,
     Who,
     Me,
+    Ping,
+    Pong,
 }
 
 impl ParsedMessage {
@@ -283,11 +289,13 @@ impl ParsedMessage {
             ParsedMessage::Blob(_) => MessageKind::Blob,
             ParsedMessage::Who(_) => MessageKind::Who,
             ParsedMessage::Me(_) => MessageKind::Me,
+            ParsedMessage::Ping(_) => MessageKind::Ping,
+            ParsedMessage::Pong(_) => MessageKind::Pong,
         }
     }
 
     /// The sender's epoch and `SyncEnvelope::epoch_seq`, as every message carries them
-    /// but WHO and ME (which the node never sees).
+    /// but WHO, ME, PING and PONG (which the node never sees).
     pub(crate) fn epoch_stamp(&self) -> Option<(Epoch, u32)> {
         match self {
             ParsedMessage::Hello(hello) => Some((hello.epoch, hello.epoch_seq)),
@@ -297,7 +305,10 @@ impl ParsedMessage {
                 Some((status.epoch, status.epoch_seq))
             }
             ParsedMessage::Blob(blob) => Some((blob.epoch, blob.epoch_seq)),
-            ParsedMessage::Who(_) | ParsedMessage::Me(_) => None,
+            ParsedMessage::Who(_)
+            | ParsedMessage::Me(_)
+            | ParsedMessage::Ping(_)
+            | ParsedMessage::Pong(_) => None,
         }
     }
 }
@@ -334,7 +345,7 @@ pub(crate) struct ListedPeer {
 }
 
 /// Where messages to a peer go now (`Transport::destination`).
-#[derive(Debug, Clone, PartialEq, Eq, Serialize)]
+#[derive(Debug, Clone, PartialEq, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct Destination {
     /// As the identity layer keeps it: `<scheme>:<transport identity>`.
@@ -344,6 +355,9 @@ pub(crate) struct Destination {
     pub(crate) proven: bool,
     /// The transport's connection to it, if the transport has connections.
     pub(crate) connection: Option<Connection>,
+    /// Every address it proved itself at, best first, as the paths layer measures them
+    /// (`transport::paths`).
+    pub(crate) paths: Vec<stats::PathInfo>,
 }
 
 /// How a transport with connections (libp2p) is connected to a peer.