Converts the given list of characters to a request header.
Converts the given list of characters to a request header. If the string is a known request header, then it is used. If not, then it if it is a known general header, then it is used. If not then it is an entity header.
Converts the given string to a request header.
Converts the given string to a request header. If the string is a known request header, then it is used. If not, then it if it is a known general header, then it is used. If not then it is an entity header.
Converts the given entity header into a request header.
Converts the given entity header into a request header.
Converts the given general header into a request header.
Converts the given general header into a request header.