Http3ControlStreamFrameTypeValidator Class — netty Architecture

Source Code

codec-http3/src/main/java/io/netty/handler/codec/http3/Http3ControlStreamFrameTypeValidator.java lines 21–43

final class Http3ControlStreamFrameTypeValidator implements Http3FrameTypeValidator {

    static final Http3ControlStreamFrameTypeValidator INSTANCE = new Http3ControlStreamFrameTypeValidator();

    private Http3ControlStreamFrameTypeValidator() { }

    @Override
    public void validate(long type, boolean first) throws Http3Exception {
        switch ((int) type) {
            case Http3CodecUtils.HTTP3_PUSH_PROMISE_FRAME_TYPE:
            case Http3CodecUtils.HTTP3_HEADERS_FRAME_TYPE:
            case Http3CodecUtils.HTTP3_DATA_FRAME_TYPE:
                if (first) {
                    throw new Http3Exception(Http3ErrorCode.H3_MISSING_SETTINGS,
                            "Missing settings frame.");
                }
                throw new Http3Exception(Http3ErrorCode.H3_FRAME_UNEXPECTED,
                        "Unexpected frame type '" + type + "' received");
            default:
               break;
        }
    }
}