Fix fragment capacity overflow (eProsima#296)

Signed-off-by: Patrick Roncagliolo <ronca.pat@gmail.com>
roncapat · Dec 3, 2021 · a245c69 · a245c69
1 parent 6909e7e
commit a245c69
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/c/core/session/write_access.c b/src/c/core/session/write_access.c
@@ -177,7 +177,7 @@ bool on_full_output_buffer_fragmented(
         0u,
         uxr_get_reliable_buffer_size(&stream->base, stream->last_written));
 
-    if (local_args->data_size <= buffer_capacity)
+    if ((local_args->data_size + SUBHEADER_SIZE + WRITE_DATA_PAYLOAD_SIZE) <= buffer_capacity)
     {
         uxr_buffer_submessage_header(&temp_ub, SUBMESSAGE_ID_FRAGMENT, (uint16_t) local_args->data_size,
                 FLAG_LAST_FRAGMENT);