src/main/java/org/java_websocket/drafts/Draft_6455.java
private HandshakeState containsRequestedProtocol(String requestedProtocol) {
		for( IProtocol knownProtocol : knownProtocols ) {
			if( knownProtocol.acceptProvidedProtocol( requestedProtocol ) ) {
				protocol = knownProtocol;
				log.trace("acceptHandshake - Matching protocol found: {}", protocol);
				return HandshakeState.MATCHED;
			}
		}
		return HandshakeState.NOT_MATCHED;
	}
private HandshakeState containsRequestedProtocol(String requestedProtocol) {
		for( IProtocol knownProtocol : knownProtocols ) {
			if( knownProtocol.acceptProvidedProtocol( requestedProtocol ) ) {
				protocol = knownProtocol;
				log.trace("acceptHandshake - Matching protocol found: {}", protocol);
				return HandshakeState.MATCHED;
			}
		}
		return HandshakeState.NOT_MATCHED;
	}
Check if the requested protocol is part of this draft
@param requestedProtocol the requested protocol
@return MATCHED if it is matched, otherwise NOT_MATCHED