GuessCurrentAppURL tries to guess the current full app URL (with sub-path) by http headers.

GuessCurrentHostURL tries to guess the current full host URL (no sub-path) by http headers, there is no trailing slash.

IsRelativeURL detects if a URL is relative (no scheme or host).

MakeAbsoluteURL tries to make a link to an absolute URL: * If link is empty, it returns the current app URL.

NewRequest returns *Request with specific method.

ServeSetHeaders sets necessary content serve headers.

TimeoutDialer returns functions of connection dialer with timeout settings for http.Transport Dial field.

Request provides more useful methods for requesting one url than http.Request.

Settings is the default settings for http client.