package jxm.JWS;

import javax.net.ssl.SSLException;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ByteChannel;

public interface WrappedByteChannel extends ByteChannel {
    public boolean isNeedWrite();

    public void writeMore() throws IOException;

    /**
     * returns whether readMore should be called to fetch data which has been decoded but not yet been returned.
     *
     * @see #read(ByteBuffer)
     * @see #readMore(ByteBuffer)
     */
    public boolean isNeedRead();

    /**
     * This function does not read data from the underlying channel at all. It is just a way to fetch data which has already be received or decoded but was but was not yet returned to the user.
     * This could be the case when the decoded data did not fit into the buffer the user passed to {@link #read(ByteBuffer)}.
     */
    public int readMore(ByteBuffer dst) throws SSLException;

    public boolean isBlocking();
}