Method validateFrame

java/org/apache/coyote/http2/Http2Parser.java:705–740

(FrameType expected, FrameType frameType, int streamId, int flags, int payloadSize)

     * not all frame types, use your judgement.
     */
    protected void validateFrame(FrameType expected, FrameType frameType, int streamId, int flags, int payloadSize)
            throws Http2Exception {

        if (log.isTraceEnabled()) {
            log.trace(sm.getString("http2Parser.processFrame", connectionId, Integer.toString(streamId), frameType,
                    Integer.toString(flags), Integer.toString(payloadSize)));
        }

        if (expected != null && frameType != expected) {
            throw new StreamException(sm.getString("http2Parser.processFrame.unexpectedType", expected, frameType),
                    Http2Error.PROTOCOL_ERROR, streamId);
        }

        int maxFrameSize = input.getMaxFrameSize();
        if (payloadSize > maxFrameSize) {
            throw new ConnectionException(sm.getString("http2Parser.payloadTooBig", Integer.toString(payloadSize),
                    Integer.toString(maxFrameSize)), Http2Error.FRAME_SIZE_ERROR);
        }

        if (headersCurrentStream != -1) {
            if (headersCurrentStream != streamId) {
                throw new ConnectionException(
                        sm.getString("http2Parser.headers.wrongStream", connectionId,
                                Integer.toString(headersCurrentStream), Integer.toString(streamId)),
                        Http2Error.COMPRESSION_ERROR);
            }
            if (frameType == FrameType.RST) {
                // NO-OP: RST is OK here
            } else if (frameType != FrameType.CONTINUATION) {
                throw new ConnectionException(sm.getString("http2Parser.headers.wrongFrameType", connectionId,
                        Integer.toString(headersCurrentStream), frameType), Http2Error.COMPRESSION_ERROR);
            }
        }

        frameType.check(streamId, payloadSize);
    }


    /**