If the hpack decoder sees an invalid header index, it emits value "### ERR ###" that was used during debugging instead of rejecting the block. This is harmless, and was detected by h2spec. To backport to 1.8.
If the hpack decoder sees an invalid header index, it emits value "### ERR ###" that was used during debugging instead of rejecting the block. This is harmless, and was detected by h2spec. To backport to 1.8.