Constant libnghttp2_sys::NGHTTP2_ERR_INVALID_HEADER_BLOCK

pub const NGHTTP2_ERR_INVALID_HEADER_BLOCK: nghttp2_error

The received frame contains the invalid header block (e.g., There are duplicate header names; or the header names are not encoded in US-ASCII character set and not lower cased; or the header name is zero-length string; or the header value contains multiple in-sequence NUL bytes).