Move $last_response here from Sip/MsgType.pm

diff --git a/Sip.pm b/Sip.pm
index baa214d..e9806c5 100644 (file)
--- a/Sip.pm
+++ b/Sip.pm
@@ -8,25 +8,39 @@ use strict;
 use warnings;
 use English;
 use Exporter;
+
+use Sys::Syslog qw(syslog);
 use POSIX qw(strftime);
+
 use Sip::Constants qw(SIP_DATETIME);
+use Sip::Checksum qw(checksum);
+
 our @ISA = qw(Exporter);
 
 our @EXPORT_OK = qw(y_or_n timestamp add_field maybe_add denied sipbool
                    boolspace write_msg
-                   $error_detection $protocol_version $field_delimiter);
+                   $error_detection $protocol_version $field_delimiter
+                   $last_response);
 
 our %EXPORT_TAGS = (
                    all => [qw(y_or_n timestamp add_field maybe_add
                               denied sipbool boolspace write_msg
                               $error_detection $protocol_version
-                              $field_delimiter)]);
+                              $field_delimiter $last_response)]);
 
 
 our $error_detection = 0;
 our $protocol_version = "1.00";
 our $field_delimiter = '|';    # Protocol Default
 
+# We need to keep a copy of the last message we sent to the SC,
+# in case there's a transmission error and the SC sends us a
+# REQUEST_ACS_RESEND.  If we receive a REQUEST_ACS_RESEND before
+# we've ever sent anything, then we are to respond with a 
+# REQUEST_SC_RESEND (p.16)
+
+our $last_response = '';
+
 sub timestamp {
     return strftime(SIP_DATETIME, localtime());
 }