Normalize and deduplicate master peer addresses

weed/command/master_test.go

@@ -43,3 +43,24 @@ func TestCheckPeersCanonicalizesSelfEntry(t *testing.T) {
 		}
 	}
 }
+
+func TestCheckPeersDeduplicatesAliasPeers(t *testing.T) {
+	_, peers := checkPeers("127.0.0.1", 9000, 19000, "127.0.0.1:9002,127.0.0.1:9002.19002,127.0.0.1:9003")
+
+	if len(peers) != 3 {
+		t.Fatalf("expected 3 unique peers after normalization, got %d: %+v", len(peers), peers)
+	}
+
+	count9002 := 0
+	for _, peer := range peers {
+		if peer.ToHttpAddress() == "127.0.0.1:9002" {
+			count9002++
+			if string(peer) != "127.0.0.1:9002.19002" {
+				t.Fatalf("expected canonical peer 127.0.0.1:9002.19002, got %q", peer)
+			}
+		}
+	}
+	if count9002 != 1 {
+		t.Fatalf("expected one peer for 127.0.0.1:9002, got %d in %+v", count9002, peers)
+	}
+}