* Overview                                            -*-outline-*-
This library provides a simple HTTP client interface for scsh. Besides
a bare-bones HTTP request interface, it provides a simple interface
for GET and POST requests which can handle proxies and HTTP basic
authorization.

* Structure: HTTP-SIMPLE
** Procedure: http-get url [headers]
Returns the body of the resource located with the URL, which must be a
HTTP URL. The optional argument HEADERS can be a list of name-value
pairs of headers to use for this request. Some headers are added by
default if not given this way.

** Procedure: http-post url body [headers]
The same as above, but uses POST instead of GET, and uses BODY as the
body for the POST.

* Structure: HTTP-UTILS
** Procedure: base64-encode str
Return STR base64-encoded.

** Procedure: url-encode str
Percent-encode some characters in STR.

** Procedure: url-query-string query-vars
Return a properly url-encoded query string. QUERY-VARS is a list of
name-value pairs. Returned is the typical "foo=bar&baz=qux" string.

* Structure HTTP-REQUEST
The main request sending structure. See the source for more
enlightenment.