AZ field also needs to be in the output message.

Signed-off-by: Jason Stephenson <jstephenson@mvlc.org>

diff --git a/Sip.pm b/Sip.pm
index 37b3814..9dea1c1 100644 (file)
--- a/Sip.pm
+++ b/Sip.pm
@@ -230,7 +230,8 @@ sub write_msg {
         if (defined($self->{seqno})) {
             $msg .= 'AY' . $self->{seqno};
         }
-        $msg .= checksum($msg . 'AZ');
+        $msg .= 'AZ';
+        $msg .= checksum($msg);
     }