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Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for the Android platform. Android unfortunately ships with a stripped-down version of Bouncy Castle, which prevents easy upgrades - Spongy Castle overcomes this and provides a full, up-to-date version of the Bouncy Castle cryptographic libs.

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package org.spongycastle.crypto.tls;

import java.io.IOException;
import java.io.InputStream;

/**
 * An InputStream for an TLS 1.0 connection.
 */
class TlsInputStream
    extends InputStream
{
    private byte[] buf = new byte[1];
    private TlsProtocol handler = null;

    TlsInputStream(TlsProtocol handler)
    {
        this.handler = handler;
    }

    public int available()
        throws IOException
    {
        return this.handler.applicationDataAvailable();
    }

    public int read(byte[] buf, int offset, int len)
        throws IOException
    {
        return this.handler.readApplicationData(buf, offset, len);
    }

    public int read()
        throws IOException
    {
        if (this.read(buf) < 0)
        {
            return -1;
        }
        return buf[0] & 0xff;
    }

    public void close()
        throws IOException
    {
        handler.close();
    }
}