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-rw-r--r--lib/http2.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/http2.c b/lib/http2.c
index c6588b577..ba088b712 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -37,6 +37,10 @@
/* include memdebug.h last */
#include "memdebug.h"
+#if (NGHTTP2_VERSION_NUM < 0x000300)
+#error too old nghttp2 version, upgrade!
+#endif
+
/*
* HTTP2 handler interface. This isn't added to the general list of protocols
* but will be used at run-time when the protocol is dynamically switched from