Clicktail installed from provided .deb package (version 1.0.20180402) generates HTTP requests like:

`POST /?query=INSERT+INTO+clicktail.apache_log+FORMAT+JSONEachRow HTTP/1.1`
`Host: XXX:8123`
`User-Agent: libclick-go/1.4.0 clicktail/dev (regex)`
`Content-Length: 2425`
`Authorization: Basic XXX`
`Content-Encoding: gzip`
`Content-Type: application/json`
`X-Honeycomb-Team: `
`Accept-Encoding: gzip`

Header X-Honeycomb-Team contains only space before terminal characters:
`58 2d 48 6f 6e 65 79 63 6f 6d 62 2d 54 65 61 6d 3a 20 0d 0a`

Clickhouse server 21.4.5.46 doesn't accept those requests and returns: 
`HTTP/1.1 400 Bad Request`

There is no requirement in RFC 7230 https://tools.ietf.org/html/rfc7230#section-3.2 for field-value to contains any data. Shouldn't be those requests accepted?
++pos;
        }
        else
        {
            const uint8_t * upos = reinterpret_cast<const uint8_t *>(pos);
            if (pos + 1 < end && upos[0] == 0xC2 && (upos[1] == 0x85 || upos[1] == 0xA0))
            {
                pos += 2;
            }
            else if (pos + 2 < end
                &&    ((upos[0] == 0xE1 && upos[1] == 0xA0 && upos[2] == 0x8E)
                    || (upos[0] == 0xE2
                        &&    ((upos[1] == 0x80
                            &&    ((upos[2] >= 0x80 && upos[2] <= 0x8A)
                                || (upos[2] >= 0xA8 && upos[2] <= 0xA9)
                                || (upos[2] >= 0x8B && upos[2] <= 0x8D)
                                || (upos[2] == 0xAF)))
                            || (upos[1] == 0x81 && (upos[2] == 0x9F || upos[2] == 0xA0))))
                    || (upos[0] == 0xE3 && upos[1] == 0x80 && upos[2] == 0x80)
                    || (upos[0] == 0xEF && upos[1] == 0xBB && upos[2] == 0xBF)))
            {
                pos += 3;
            }
            else
                break;
        }
    }
    return pos;
}
inline bool equalsCaseInsensitive(char a, char b)