From c6777547f69022df9b600b09a076bf4481ac9bf3 Mon Sep 17 00:00:00 2001
From: Mike Kleshov <m.kleshov@gmail.com>
Date: Fri, 1 Jan 2021 11:26:30 +0300
Subject: [PATCH] Make sure tag insertion is complete when tag is followed by
 EOF.

See bug #59728.

Signed-off-by: Mike Kleshov <m.kleshov@gmail.com>
---
 src/apps/http/httpd.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/apps/http/httpd.c b/src/apps/http/httpd.c
index 2b9baf88..d844d9f5 100644
--- a/src/apps/http/httpd.c
+++ b/src/apps/http/httpd.c
@@ -1610,6 +1610,11 @@ http_send(struct altcp_pcb *pcb, struct http_state *hs)
   }
 #endif /* LWIP_HTTPD_DYNAMIC_HEADERS */
 
+#if LWIP_HTTPD_SSI
+  if (hs->ssi && (hs->ssi->tag_state == TAG_SENDING)) {
+    /* do not check the condition below */
+  } else
+#endif
   /* Have we run out of file data to send? If so, we need to read the next
    * block from the file. */
   if (hs->left == 0) {
@@ -1621,6 +1626,9 @@ http_send(struct altcp_pcb *pcb, struct http_state *hs)
 #if LWIP_HTTPD_SSI
   if (hs->ssi) {
     data_to_send = http_send_data_ssi(pcb, hs);
+    if (hs->ssi->tag_state == TAG_SENDING) {
+      return data_to_send;
+    }
   } else
 #endif /* LWIP_HTTPD_SSI */
   {