From 6519b0c1bb80430968e49d9808208d14e8deb0e8 Mon Sep 17 00:00:00 2001
From: Francesco Cozzuto <francesco.cozzuto@gmail.com>
Date: Wed, 3 Dec 2025 18:01:39 +0100
Subject: [PATCH] Fix incorrect call to http_response_builder_body_cap in
 toastyfs_web

---
 web/3p/chttp.c      | 26 ++++++++++++++++++++++++++
 web/3p/chttp.h      |  6 ++++++
 web/src/proxy_get.c | 14 +++++++++-----
 3 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/web/3p/chttp.c b/web/3p/chttp.c
index 9d76058..7c5465c 100644
--- a/web/3p/chttp.c
+++ b/web/3p/chttp.c
@@ -2676,6 +2676,9 @@ void socket_manager_register_events(
             continue;
         j++;
 
+        if (s->silent)
+            continue;
+
         // If at least one socket can be processed, return an
         // empty list.
         if (s->state == SOCKET_STATE_DIED || s->state == SOCKET_STATE_ESTABLISHED_READY) {
@@ -2754,6 +2757,7 @@ int socket_manager_translate_events(
             s->sock   = sock;
             s->events = 0;
             s->user   = NULL;
+            s->silent = false;
 #ifdef HTTPS_ENABLED
             // Determine whether the event came from
             // the encrypted listener or not.
@@ -2789,7 +2793,10 @@ int socket_manager_translate_events(
 #endif
 
         } else {
+
             Socket *s = reg.ptrs[i];
+            assert(!s->silent);
+
             socket_update(s);
         }
     }
@@ -2800,6 +2807,9 @@ int socket_manager_translate_events(
             continue;
         j++;
 
+        if (s->silent)
+            continue;
+
         if (s->state == SOCKET_STATE_DIED) {
 
             events[num_events++] = (SocketEvent) {
@@ -2989,6 +2999,7 @@ int socket_connect(SocketManager *sm, int num_targets,
     UPDATE_STATE(s->state, SOCKET_STATE_PENDING);
     s->sock = NATIVE_SOCKET_INVALID;
     s->user = user;
+    s->silent = false;
 #ifdef HTTPS_ENABLED
     s->server_secure_context = NULL;
     s->client_secure_context = NULL;
@@ -3173,6 +3184,15 @@ bool socket_ready(SocketManager *sm, SocketHandle handle)
     return false;
 }
 
+void socket_silent(SocketManager *sm, SocketHandle handle, bool value)
+{
+    Socket *s = handle_to_socket(sm, handle);
+    if (s == NULL)
+       return;
+
+    s->silent = value;
+}
+
 ////////////////////////////////////////////////////////////////////////////////////////
 // src/byte_queue.c
 ////////////////////////////////////////////////////////////////////////////////////////
@@ -4592,6 +4612,9 @@ check_request_buffer(HTTP_Server *server, HTTP_ServerConn *conn)
         // Ready
         assert(ret > 0);
 
+        // Stop receiving I/O events while we are building the response
+        socket_silent(&server->sockets, conn->handle, true);
+
         conn->state = HTTP_SERVER_CONN_WAIT_STATUS;
         conn->request_len = ret;
         conn->response_offset = byte_queue_offset(&conn->output);
@@ -5022,6 +5045,9 @@ void http_response_builder_send(HTTP_ResponseBuilder builder)
     conn->state = HTTP_SERVER_CONN_FLUSHING;
     conn->gen++;
 
+    // Enable back I/O events
+    socket_silent(&builder.server->sockets, conn->handle, false);
+
     http_server_conn_process_events(builder.server, conn);
 }
 
diff --git a/web/3p/chttp.h b/web/3p/chttp.h
index 3c0b911..2a82e2f 100644
--- a/web/3p/chttp.h
+++ b/web/3p/chttp.h
@@ -481,6 +481,9 @@ typedef struct {
     // Native socket events that need to be monitored
     int events;
 
+    // If this is set, the raw socket handle shouldn't be monitored
+    bool silent;
+
     // Generation counter to invalidate any SocketHandle
     // referring to this socket when it is freed.
     // Note that this counter may wrap but always skips
@@ -668,6 +671,9 @@ void socket_set_user(SocketManager *sm, SocketHandle handle, void *user);
 // writing.
 bool socket_ready(SocketManager *sm, SocketHandle handle);
 
+// When a socket is marked as silent it will not generate events
+void socket_silent(SocketManager *sm, SocketHandle handle, bool value);
+
 ////////////////////////////////////////////////////////////////////////////////////////
 // src/byte_queue.h
 ////////////////////////////////////////////////////////////////////////////////////////
diff --git a/web/src/proxy_get.c b/web/src/proxy_get.c
index d18b7bb..aa67146 100644
--- a/web/src/proxy_get.c
+++ b/web/src/proxy_get.c
@@ -12,11 +12,6 @@ bool process_request_get(ProxyState *state, ProxyOperation *operation,
         || request->method == HTTP_METHOD_HEAD);
 
     http_response_builder_status(builder, 200); // OK
-    http_response_builder_body_cap(builder, 1<<10); // TODO: pick the prealloc better
-
-    int cap;
-    char *dst = http_response_builder_body_buf(builder, &cap);
-    // TODO: check for NULL dst
 
     ToastyString path = {
         request->url.path.ptr,
@@ -28,10 +23,19 @@ bool process_request_get(ProxyState *state, ProxyOperation *operation,
         handle = toasty_begin_list(state->backend, path,
             TOASTY_VERSION_TAG_EMPTY);
     } else {
+
+        http_response_builder_body_cap(builder, 1<<10); // TODO: pick the prealloc better
+
+        int cap;
+        char *dst = http_response_builder_body_buf(builder, &cap);
+        // TODO: check for NULL dst
+
         handle = toasty_begin_read(state->backend, path,
             0, dst, cap, TOASTY_VERSION_TAG_EMPTY);
     }
     if (handle == TOASTY_INVALID) {
+        if (!path_refers_to_dir(path))
+            http_response_builder_body_ack(builder, 0);
         http_response_builder_status(builder, 500); // Internal Server Error
         http_response_builder_send(builder);
         return false;