vendor/psr/http-message/src/UriInterface.php

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<?php
namespace Psr\Http\Message;

/**
 * Value object representing a URI.
 *
 * This interface is meant to represent URIs according to RFC 3986 and to
 * provide methods for most common operations. Additional functionality for
 * working with URIs can be provided on top of the interface or externally.
 * Its primary use is for HTTP requests, but may also be used in other
 * contexts.
 *
 * Instances of this interface are considered immutable; all methods that
 * might change state MUST be implemented such that they retain the internal
 * state of the current instance and return an instance that contains the
 * changed state.
 *
 * Typically the Host header will be also be present in the request message.
 * For server-side requests, the scheme will typically be discoverable in the
 * server parameters.
 *
 * @link http://tools.ietf.org/html/rfc3986 (the URI specification)
 */
interface UriInterface
{
    /**
     * Retrieve the scheme component of the URI.
     *
     * If no scheme is present, this method MUST return an empty string.
     *
     * The value returned MUST be normalized to lowercase, per RFC 3986
     * Section 3.1.
     *
     * The trailing ":" character is not part of the scheme and MUST NOT be
     * added.
     *
     * @see https://tools.ietf.org/html/rfc3986#section-3.1
     * @return string The URI scheme.
     */
    public function getScheme();

    /**
     * Retrieve the authority component of the URI.
     *
     * If no authority information is present, this method MUST return an empty
     * string.
     *
     * The authority syntax of the URI is:
     *
     * <pre>
     * [user-info@]host[:port]
     * </pre>
     *
     * If the port component is not set or is the standard port for the current
     * scheme, it SHOULD NOT be included.
     *
     * @see https://tools.ietf.org/html/rfc3986#section-3.2
     * @return string The URI authority, in "[user-info@]host[:port]" format.
     */
    public function getAuthority();