From 34652f45f3c321044b853df6c452578da94c8739 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Sat, 31 Aug 2019 21:18:55 +0200
Subject: don't mark auditor as 'up' when version request failed

---
 src/lib/exchange_api_handle.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/lib/exchange_api_handle.c b/src/lib/exchange_api_handle.c
index d0777dc01..bbe5f45a0 100644
--- a/src/lib/exchange_api_handle.c
+++ b/src/lib/exchange_api_handle.c
@@ -672,6 +672,15 @@ auditor_version_cb
 {
   struct TEAH_AuditorListEntry *ale = cls;
 
+  if (NULL == vi)
+  {
+    /* In this case, we don't mark the auditor as 'up' */
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                _ ("Auditor `%s' gave unexpected version response.\n"),
+                ale->auditor_url);
+    return;
+  }
+
   if (0 != (TALER_AUDITOR_VC_INCOMPATIBLE & compat))
   {
     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-- 
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