Examples of io.netty.buffer.ByteBuf.readBytes()

io.netty.buffer.ByteBuf.readBytes()
Transfers this buffer's data to a newly created buffer starting at the current {@code readerIndex} and increases the {@code readerIndex}by the number of the transferred bytes (= {@code length}). The returned buffer's {@code readerIndex} and {@code writerIndex} are{@code 0} and {@code length} respectively. @param length the number of bytes to transfer @return the newly created buffer which contains the transferred bytes @throws IndexOutOfBoundsException if {@code length} is greater than {@code this.readableBytes}

            try {
                if (buf.hasArray()) {
                    return buf.array();
                } else {
                    byte[] result = new byte[buf.readableBytes()];
                    buf.readBytes(result);
                    return result;
                }
            } finally {
                buf.release();
            }

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        ByteBuf finalPayloadWrapped = Unpooled.wrappedBuffer(uncompressedFrame1.content(),
                uncompressedFrame2.content(), uncompressedFrame3.content());
        assertEquals(300, finalPayloadWrapped.readableBytes());


        byte[] finalPayload = new byte[300];
        finalPayloadWrapped.readBytes(finalPayload);
        assertTrue(Arrays.equals(finalPayload, payload));
        finalPayloadWrapped.release();
    }


    @Test

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        final ByteArrayOutputStream out = new ByteArrayOutputStream(length);
        doAnswer(new Answer<Void>() {
            @Override
            public Void answer(InvocationOnMock in) throws Throwable {
                ByteBuf buf = (ByteBuf) in.getArguments()[2];
                buf.readBytes(out, buf.readableBytes());
                return null;
            }
        }).when(serverListener).onDataRead(any(ChannelHandlerContext.class), eq(3),
                any(ByteBuf.class), eq(0), Mockito.anyBoolean());
        try {

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        boolean result = channel.writeOutbound(request);
        assertThat(result, is(true));


        ByteBuf written = channel.readOutbound();
        assertThat(written.readableBytes(), is(DEFAULT_HEADER_SIZE + extrasLength));
        written.readBytes(DEFAULT_HEADER_SIZE);
        assertThat(written.readBytes(extrasLength).toString(CharsetUtil.UTF_8), equalTo(extrasContent));
        written.release();
    }


    @Test

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        assertThat(result, is(true));


        ByteBuf written = channel.readOutbound();
        assertThat(written.readableBytes(), is(DEFAULT_HEADER_SIZE + extrasLength));
        written.readBytes(DEFAULT_HEADER_SIZE);
        assertThat(written.readBytes(extrasLength).toString(CharsetUtil.UTF_8), equalTo(extrasContent));
        written.release();
    }


    @Test
    public void shouldEncodeKey() {

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        boolean result = channel.writeOutbound(request);
        assertThat(result, is(true));


        ByteBuf written = channel.readOutbound();
        assertThat(written.readableBytes(), is(DEFAULT_HEADER_SIZE + keyLength));
        written.readBytes(DEFAULT_HEADER_SIZE);
        assertThat(written.readBytes(keyLength).toString(CharsetUtil.UTF_8), equalTo(key));
        written.release();
    }


    @Test

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        assertThat(result, is(true));


        ByteBuf written = channel.readOutbound();
        assertThat(written.readableBytes(), is(DEFAULT_HEADER_SIZE + keyLength));
        written.readBytes(DEFAULT_HEADER_SIZE);
        assertThat(written.readBytes(keyLength).toString(CharsetUtil.UTF_8), equalTo(key));
        written.release();
    }


    @Test
    public void shouldEncodeContent() {

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        ByteBuf written = channel.readOutbound();
        assertThat(written.readableBytes(), is(DEFAULT_HEADER_SIZE));
        written = channel.readOutbound();
        assertThat(written.readableBytes(), is(content1.content().readableBytes()));
        assertThat(
                written.readBytes(content1.content().readableBytes()).toString(CharsetUtil.UTF_8),
                is("Netty")
        );
        written.release();


        written = channel.readOutbound();

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        written.release();


        written = channel.readOutbound();
        assertThat(written.readableBytes(), is(content2.content().readableBytes()));
        assertThat(
                written.readBytes(content2.content().readableBytes()).toString(CharsetUtil.UTF_8),
                is(" Rocks!")
        );
        written.release();
    }

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        KeyFactory rsaKF = KeyFactory.getInstance("RSA");
        KeyFactory dsaKF = KeyFactory.getInstance("DSA");


        ByteBuf encodedKeyBuf = PemReader.readPrivateKey(keyFile);
        byte[] encodedKey = new byte[encodedKeyBuf.readableBytes()];
        encodedKeyBuf.readBytes(encodedKey).release();


        char[] keyPasswordChars = keyPassword == null ? EmptyArrays.EMPTY_CHARS : keyPassword.toCharArray();
        PKCS8EncodedKeySpec encodedKeySpec = generateKeySpec(keyPasswordChars, encodedKey);


        PrivateKey key;

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