1 files changed, 4 insertions, 16 deletions
diff --git a/epan/nghttp2/nghttp2_helper.c b/epan/nghttp2/nghttp2_helper.c
index c75e082424..feec30d0aa 100644
--- a/epan/nghttp2/nghttp2_helper.c
+++ b/epan/nghttp2/nghttp2_helper.c
@@ -51,21 +51,6 @@ uint32_t nghttp2_get_uint32(const uint8_t *data) {
   return g_ntohl(n);
 }
 
-void *nghttp2_memdup(const void *src, size_t n, nghttp2_mem *mem) {
-  void *dest;
-
-  if (n == 0) {
-    return NULL;
-  }
-
-  dest = nghttp2_mem_malloc(mem, n);
-  if (dest == NULL) {
-    return NULL;
-  }
-  memcpy(dest, src, n);
-  return dest;
-}
-
 /* Generated by gendowncasetbl.py */
 static const uint8_t DOWNCASE_TBL[] = {
     0 /* NUL  */,   1 /* SOH  */,   2 /* STX  */,   3 /* ETX  */,
@@ -230,7 +215,7 @@ int nghttp2_adjust_local_window_size(int32_t *local_window_size_ptr,
 
 int nghttp2_should_send_window_update(int32_t local_window_size,
                                       int32_t recv_window_size) {
-  return recv_window_size >= local_window_size / 2;
+  return recv_window_size > 0 && recv_window_size >= local_window_size / 2;
 }
 
 const char *nghttp2_strerror(int error_code) {
@@ -309,6 +294,9 @@ const char *nghttp2_strerror(int error_code) {
     return "The user callback function failed";
   case NGHTTP2_ERR_BAD_CLIENT_MAGIC:
     return "Received bad client magic byte string";
+  case NGHTTP2_ERR_FLOODED:
+    return "Flooding was detected in this HTTP/2 session, and it must be "
+           "closed";
   default:
     return "Unknown error code";
   }