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?
{
    return static_cast<unsigned char>(c) <= 31;
}
inline bool isPrintableASCII(char c)
{
    uint8_t uc = c;
    return uc >= 32 && uc <= 126;   
}
inline bool isPunctuationASCII(char c)
{
    uint8_t uc = c;
    return (uc >= 33 && uc <= 47)
        || (uc >= 58 && uc <= 64)
        || (uc >= 91 && uc <= 96)
        || (uc >= 123 && uc <= 125);
}
inline bool isValidIdentifier(const std::string_view & str)
{
    return !str.empty() && isValidIdentifierBegin(str[0]) && std::all_of(str.begin() + 1, str.end(), isWordCharASCII);
}
inline char toLowerIfAlphaASCII(char c)
{
    return c | 0x20;
}
inline char toUpperIfAlphaASCII(char c)
{
    return c & (~0x20);
}
inline char alternateCaseIfAlphaASCII(char c)