From a9f6f9f6ac24e4f8e355c5854915f7cff2dc212a Mon Sep 17 00:00:00 2001
From: jess <jess@else-if.org>
Date: Fri, 3 Apr 2026 03:47:51 -0700
Subject: [PATCH] add timestamp tracking to UDP client table

---
 main/wifi_transport.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/main/wifi_transport.c b/main/wifi_transport.c
index 579524e..9e2df73 100644
--- a/main/wifi_transport.c
+++ b/main/wifi_transport.c
@@ -20,7 +20,6 @@
 #define UDP_PORT           5941
 #define UDP_BUF_SIZE       128
 #define UDP_CLIENTS_MAX    16
-#define CLIENT_TIMEOUT_MS  30000
 
 static int udp_sock = -1;
 static esp_netif_t *ap_netif;
@@ -28,6 +27,7 @@ static esp_netif_t *ap_netif;
 static struct {
     struct sockaddr_in addr;
     uint8_t mac[6];
+    uint32_t last_touch_ms;
     bool active;
 } clients[UDP_CLIENTS_MAX];
 
@@ -41,6 +41,7 @@ static void client_touch(const struct sockaddr_in *addr)
     for (int i = 0; i < client_count; i++) {
         if (clients[i].addr.sin_addr.s_addr == addr->sin_addr.s_addr &&
             clients[i].addr.sin_port == addr->sin_port) {
+            clients[i].last_touch_ms = xTaskGetTickCount() * portTICK_PERIOD_MS;
             xSemaphoreGive(client_mutex);
             return;
         }
@@ -63,6 +64,7 @@ static void client_touch(const struct sockaddr_in *addr)
             }
         }
 
+        clients[client_count].last_touch_ms = xTaskGetTickCount() * portTICK_PERIOD_MS;
         client_count++;
         printf("UDP: client added (%d)\n", client_count);
     }