HTTP/001.0010 200 OK Date: Sun, 06 Nov 1994 08:49:37 GMT Content-Type: text/plain Accept: text/plain, text/html, image/gif Accept: image/jpg Content-Language: en This message use a strange HTTP version number, which clients MUST be able to parse: The version of an HTTP message is indicated by an HTTP-Version field in the first line of the message. HTTP-Version = "HTTP" "/" 1*DIGIT "." 1*DIGIT Note that the major and minor numbers MUST be treated as separate integers and that each may be incremented higher than a single digit. Thus, HTTP/2.4 is a lower version than HTTP/2.13, which in turn is lower than HTTP/12.3. Leading zeros MUST be ignored by recipients and MUST NOT be sent.