From 902d985ca828587236d90a56a3b29b4ab4ffa945 Mon Sep 17 00:00:00 2001
From: Wild Dragon Dev <dev@wilddragon.net>
Date: Wed, 3 Jun 2026 20:05:55 +0000
Subject: [PATCH] framecache: add SIGPIPE ignore, signal logging, and init:true
 for stable POST handling

---
 docker-compose.worker.yml            | 1 +
 services/framecache/src/framecache.c | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/docker-compose.worker.yml b/docker-compose.worker.yml
index cb0c6af..61bce79 100644
--- a/docker-compose.worker.yml
+++ b/docker-compose.worker.yml
@@ -169,6 +169,7 @@ services:
     build: ./services/framecache
     profiles: [capture]
     restart: unless-stopped
+    init: true
     ipc: host
     shm_size: '${FC_SHM_SIZE_GB:-40}gb'
     environment:
diff --git a/services/framecache/src/framecache.c b/services/framecache/src/framecache.c
index 0cdfe47..6210107 100644
--- a/services/framecache/src/framecache.c
+++ b/services/framecache/src/framecache.c
@@ -315,13 +315,15 @@ static void request_completed(void *cls,
 /* ── main ──────────────────────────────────────────────────────────── */
 
 static volatile int g_running = 1;
+static volatile int g_received_signal = 0;
 
-static void on_signal(int sig) { (void)sig; g_running = 0; }
+static void on_signal(int sig) { g_received_signal = sig; g_running = 0; }
 
 int main(void)
 {
     signal(SIGINT,  on_signal);
     signal(SIGTERM, on_signal);
+    signal(SIGPIPE, SIG_IGN);
 
     /* Ensure /dev/shm/framecache exists */
     mkdir("/dev/shm/framecache", 0755);
@@ -352,7 +354,7 @@ int main(void)
         nanosleep(&ts, NULL);
     }
 
-    fprintf(stderr, "[framecache] shutting down\n");
+    fprintf(stderr, "[framecache] shutting down (signal %d)\n", g_received_signal);
 
     /* Destroy all active slots */
     for (int i = 0; i < FC_MAX_SLOTS; i++) {