From: Scott Worley <scottworley@scottworley.com>
Date: Mon, 9 Oct 2023 22:17:04 +0000 (-0700)
Subject: client: Exponential backoff resend intervals
X-Git-Tag: v0.1.0~44
X-Git-Url: http://git.scottworley.com/tattlekey/commitdiff_plain/72ba8a8d6836027eaa12bb23bddf8f72900853ab

client: Exponential backoff resend intervals
---

diff --git a/client/config.c b/client/config.c
index 9bd216d..8a31cf5 100644
--- a/client/config.c
+++ b/client/config.c
@@ -24,4 +24,3 @@ u32_t config_minimum_seconds_between_button_presses = 1;
 
 /* Send each report multiple times. */
 uint config_resend_count = 5;
-u32_t config_resend_interval_ms = 1000;
diff --git a/client/config.h b/client/config.h
index 91345f9..744e586 100644
--- a/client/config.h
+++ b/client/config.h
@@ -27,6 +27,5 @@ extern u32_t config_minimum_seconds_between_button_presses;
 
 /* Send each report multiple times. */
 extern uint config_resend_count;
-extern u32_t config_resend_interval_ms;
 
 #endif
diff --git a/client/tattlekey.c b/client/tattlekey.c
index 9af9b5a..c38de12 100644
--- a/client/tattlekey.c
+++ b/client/tattlekey.c
@@ -14,7 +14,9 @@ typedef struct {
   u8_t send_count;
 } send_t;
 
-uint32_t next_send(send_t *s) { return s->timestamp + s->send_count; }
+uint32_t next_send(send_t *s) {
+  return s->timestamp + (1 << s->send_count) - 1;
+}
 
 bool next_send_less_than(void *user_data, pheap_node_id_t a,
                          pheap_node_id_t b) {