:sig
StringMap split_http_headers(String s)

:params
s : HTTP request or header text
return value : parsed request/header fields

:see
>string
split_kv
parse_query
0_Request

:content
Parses HTTP request/header text into a `StringMap`.

For a request line, the returned map includes fields such as `REQUEST_METHOD`, `REQUEST_URI`, `SCRIPT_NAME`, `QUERY_STRING`, and `SERVER_PROTOCOL`. Header names are normalized to uppercase CGI-style keys, for example `Host` becomes `HTTP_HOST`.

Example:


Most page code should read `context.params` instead. Use this helper when parsing raw HTTP text in tests or protocol helpers.

:example
StringMap headers = split_http_headers("Host: example.test\r\nUser-Agent: uce\r\n");
print(headers["Host"], "\n");
