[libmicrohttpd] 01/07: connection.c: added function to check used reply

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karlson2k pushed a commit to branch master
in repository libmicrohttpd.

commit e9292a95ec87a3c4fe1c1662fae4b3cf8d887bbb
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
AuthorDate: Fri Mar 4 15:52:06 2022 +0300

    connection.c: added function to check used reply
    
    Log warning if response has body, but no body is allowed for this
    connection.
---
 src/microhttpd/connection.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/microhttpd/connection.c b/src/microhttpd/connection.c
index f6a871c0..9e764b02 100644
--- a/src/microhttpd/connection.c
+++ b/src/microhttpd/connection.c
@@ -1814,6 +1814,32 @@ setup_reply_properties (struct MHD_Connection 
*connection)
 }
 
 
+/**
+ * Check whether queued response is suitable for @a connection.
+ * @param connection to connection to check
+ */
+static void
+check_connection_reply (struct MHD_Connection *connection)
+{
+  struct MHD_Connection *const c = connection; /**< a short alias */
+  struct MHD_Response *const r = c->response;  /**< a short alias */
+  mhd_assert (c->rp_props.set);
+
+#ifdef HAVE_MESSAGES
+  if ((! c->rp_props.use_reply_body_headers) && (0 != r->total_size))
+  {
+    MHD_DLOG (c->daemon,
+              _ ("This reply with response code %u cannot use reply body. "
+                 "Non-empty response body is ignored and not used.\n"),
+              (unsigned) (c->responseCode & (~MHD_ICY_FLAG)));
+  }
+#else
+  (void) c; /* Mute compiler warning */
+  (void) r; /* Mute compiler warning */
+#endif
+}
+
+
 /**
  * Append data to the buffer if enough space is available,
  * update position.
@@ -2012,6 +2038,8 @@ build_header_response (struct MHD_Connection *connection)
               ! c->rp_props.use_reply_body_headers);
 #endif /* UPGRADE_SUPPORT */
 
+  check_connection_reply (c);
+
   rcode = (unsigned) (c->responseCode & (~MHD_ICY_FLAG));
   if (MHD_CONN_MUST_CLOSE == c->keepalive)
   {

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