--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/files/patch-promhttp_src_promhttp.c	Tue Mar 18 18:17:59 2025 +0100
@@ -0,0 +1,40 @@
+--- promhttp/src/promhttp.c.orig	2020-12-08 07:38:13 UTC
++++ promhttp/src/promhttp.c
+@@ -29,32 +29,32 @@ void promhttp_set_active_collector_registry(prom_colle
+   }
+ }
+ 
+-int promhttp_handler(void *cls, struct MHD_Connection *connection, const char *url, const char *method,
++enum MHD_Result promhttp_handler(void *cls, struct MHD_Connection *connection, const char *url, const char *method,
+                      const char *version, const char *upload_data, size_t *upload_data_size, void **con_cls) {
+   if (strcmp(method, "GET") != 0) {
+     char *buf = "Invalid HTTP Method\n";
+     struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_PERSISTENT);
+-    int ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, response);
++    enum MHD_Result ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, response);
+     MHD_destroy_response(response);
+     return ret;
+   }
+   if (strcmp(url, "/") == 0) {
+     char *buf = "OK\n";
+     struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_PERSISTENT);
+-    int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
++    enum MHD_Result ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
+     MHD_destroy_response(response);
+     return ret;
+   }
+   if (strcmp(url, "/metrics") == 0) {
+     const char *buf = prom_collector_registry_bridge(PROM_ACTIVE_REGISTRY);
+     struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_MUST_FREE);
+-    int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
++    enum MHD_Result ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
+     MHD_destroy_response(response);
+     return ret;
+   }
+   char *buf = "Bad Request\n";
+   struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_PERSISTENT);
+-  int ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, response);
++  enum MHD_Result ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, response);
+   MHD_destroy_response(response);
+   return ret;
+ }