PeerRecord class with ProtoBuff implemented

libp2p/peer/pb/peer_record.proto

@@ -0,0 +1,31 @@
+syntax = "proto3";
+
+package peer.pb;
+
+option go_package = "github.com/libp2p/go-libp2p/core/peer/pb";
+
+// PeerRecord messages contain information that is useful to share with other peers.
+// Currently, a PeerRecord contains the public listen addresses for a peer, but this
+// is expected to expand to include other information in the future.
+//
+// PeerRecords are designed to be serialized to bytes and placed inside of
+// SignedEnvelopes before sharing with other peers.
+// See https://github.com/libp2p/go-libp2p/blob/master/core/record/pb/envelope.proto for
+// the SignedEnvelope definition.
+message PeerRecord {
+
+    // AddressInfo is a wrapper around a binary multiaddr. It is defined as a
+    // separate message to allow us to add per-address metadata in the future.
+    message AddressInfo {
+        bytes multiaddr = 1;
+    }
+
+    // peer_id contains a libp2p peer id in its binary representation.
+    bytes peer_id = 1;
+
+    // seq contains a monotonically-increasing sequence counter to order PeerRecords in time.
+    uint64 seq = 2;
+
+    // addresses is a list of public listen addresses for the peer.
+    repeated AddressInfo addresses = 3;
+}