From 2f796e5fe7a51e4636600b320dc1995e048b4ba2 Mon Sep 17 00:00:00 2001
From: Peter Todd <pete@petertodd.org>
Date: Wed, 26 Aug 2015 21:43:18 -0700
Subject: [PATCH] Better error message if Tor version too old

---
 src/torcontrol.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/torcontrol.cpp b/src/torcontrol.cpp
index bb72315c8..40ffbe61b 100644
--- a/src/torcontrol.cpp
+++ b/src/torcontrol.cpp
@@ -408,8 +408,10 @@ void TorController::add_onion_cb(TorControlConnection& conn, const TorControlRep
         }
         AddLocal(service, LOCAL_MANUAL);
         // ... onion requested - keep connection open
+    } else if (reply.code == 510) { // 510 Unrecognized command
+        LogPrintf("[tor] Add onion failed with unrecognized command (You probably need to upgrade Tor)\n");
     } else {
-        LogPrintf("[tor] Add onion failed\n");
+        LogPrintf("[tor] Add onion failed; error code %d\n", reply.code);
     }
 }