# NSAPI Functions

# See Also

NSAPI implements a subset of the functions from the Apache module for maximum compatibility.

Apache functions implemented by NSAPI
Apache function (only as alias) | NSAPI function | Description
--- | --- | ---
apache_request_headers() | nsapi_request_headers() | Fetch all HTTP request headers
apache_response_headers() | nsapi_response_headers() | Fetch all HTTP response headers
getallheaders() | nsapi_request_headers() | Fetch all HTTP request headers
virtual() | nsapi_virtual() | Make NSAPI sub-request

## Table of Contents

- nsapi_request_headers — Fetch all HTTP request headers
- nsapi_response_headers — Fetch all HTTP response headers
- nsapi_virtual — Perform an NSAPI sub-request