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<?php
namespace Ratchet\RFC6455\Handshake;
use Psr\Http\Message\RequestInterface;
/**
* A standard interface for interacting with the various version of the WebSocket protocol
* @todo Look in to extension support
*/
interface NegotiatorInterface {
const GUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
/**
* Given an HTTP header, determine if this version should handle the protocol
* @param RequestInterface $request
* @return bool
*/
function isProtocol(RequestInterface $request);
/**
* Although the version has a name associated with it the integer returned is the proper identification
* @return int
*/
function getVersionNumber();
/**
* Perform the handshake and return the response headers
* @param RequestInterface $request
* @return \Psr\Http\Message\ResponseInterface
*/
function handshake(RequestInterface $request);
/**
* Add supported protocols. If the request has any matching the response will include one
* @param array $protocols
*/
function setSupportedSubProtocols(array $protocols);
/**
* If enabled and support for a subprotocol has been added handshake
* will not upgrade if a match between request and supported subprotocols
* @param boolean $enable
* @todo Consider extending this interface and moving this there.
* The spec does says the server can fail for this reason, but
* it is not a requirement. This is an implementation detail.
*/
function setStrictSubProtocolCheck($enable);
}