From 749dc86410f738178414e4013cc9737f1ea1d334 Mon Sep 17 00:00:00 2001
From: Michael Jerris <mike@jerris.com>
Date: Wed, 1 Sep 2010 11:46:32 -0500
Subject: [PATCH] don't put blank 'version' attr in dialog-info packets

---
 src/mod/endpoints/mod_sofia/sofia_presence.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/mod/endpoints/mod_sofia/sofia_presence.c b/src/mod/endpoints/mod_sofia/sofia_presence.c
index 39b495d392..d548683c9d 100644
--- a/src/mod/endpoints/mod_sofia/sofia_presence.c
+++ b/src/mod/endpoints/mod_sofia/sofia_presence.c
@@ -1317,11 +1317,16 @@ static int sofia_presence_sub_callback(void *pArg, int argc, char **argv, char *
 		}
 
 		if (is_dialog) {
+			char *version = switch_event_get_header(helper->event, "event_count");
+			if (!version) {
+				version = "0";
+			}
+
 			stream.write_function(&stream,
 								  "<?xml version=\"1.0\"?>\n"
 								  "<dialog-info xmlns=\"urn:ietf:params:xml:ns:dialog-info\" "
 								  "version=\"%s\" state=\"%s\" entity=\"%s\">\n",
-								  switch_str_nil(switch_event_get_header(helper->event, "event_count")),
+								  version,
 								  !strcasecmp(answer_state, "resubscribe") ? "partial" : "full", clean_id);
 		}