From c13b90631df5a49239a321369b406fc9b56af501 Mon Sep 17 00:00:00 2001
From: Scott Worley <scottworley@scottworley.com>
Date: Tue, 10 Oct 2023 14:48:33 -0700
Subject: [PATCH] client: New epoch if seq wraps

---
 client/net.c       | 4 +++-
 client/net.h       | 2 ++
 client/tattlekey.c | 2 ++
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/client/net.c b/client/net.c
index fa5d07b..3d4be8c 100644
--- a/client/net.c
+++ b/client/net.c
@@ -34,7 +34,7 @@ static void net_local_init() {
   if (the_pcb)
     return;
 
-  epoch = get_rand_32();
+  new_epoch();
 
   the_pcb = udp_new();
   if (!the_pcb)
@@ -48,6 +48,8 @@ static void net_local_init() {
     signal_error_by_blinking();
 }
 
+void new_epoch() { epoch = get_rand_32(); }
+
 struct tattle_message_wire_format {
   u32_t epoch;
   u16_t sender;
diff --git a/client/net.h b/client/net.h
index 9b8fc1f..31e5cc4 100644
--- a/client/net.h
+++ b/client/net.h
@@ -22,4 +22,6 @@
 
 void send_report_packet(u16_t seq, u32_t ago);
 
+void new_epoch();
+
 #endif
diff --git a/client/tattlekey.c b/client/tattlekey.c
index f9b74c1..5e829d1 100644
--- a/client/tattlekey.c
+++ b/client/tattlekey.c
@@ -119,6 +119,8 @@ void service_queue() {
     switch (e.type) {
     case NEW_BUTTON_PRESS: {
       add_press(pp, &(press_t){e.buttonpress.timestamp, seq++, 0});
+      if (seq == 0)
+        new_epoch();
     } break;
     case RESEND_TIME: {
       /* OK, we're awake. Cool. Thanks! (We actually do the sends in the
-- 
2.44.1