--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sip-in/call_clear.c	Wed Sep 28 16:32:13 2022 -0800
@@ -0,0 +1,28 @@
+/*
+ * In this module we implement final clearing of calls, i.e., freeing
+ * of struct call, and all preliminary steps that need to happen
+ * toward this ultimate end state.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <syslog.h>
+#include "call.h"
+
+extern struct call *call_list;
+extern struct timeval cur_event_time;
+
+void
+sip_mark_end_time(call, linger)
+	struct call *call;
+	unsigned linger;
+{
+	call->sip_clear_time = cur_event_time.tv_sec + linger;
+}