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package com.sun.grizzly.util;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SelectableChannel;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLEngineResult;
import javax.net.ssl.SSLEngineResult.HandshakeStatus;
/**
* SSL over NIO utility to encrypt {@link ByteBuffer} and flush them.
* All the SSLEngine operations are delegated to class {@link SSLUtils}
*
* @author Jeanfrancois Arcand
*/
public final class SSLOutputWriter{
/**
* Encrypt the response and flush it using {@link OutputWriter}
* @param channel {@link SelectableChannel} to flush
* @param bb {@link ByteBuffer}
* @return number of bytes written
* @throws java.io.IOException
*/
public static long flushChannel(SelectableChannel channel, ByteBuffer bb)
throws IOException{
WorkerThread workerThread = (WorkerThread)Thread.currentThread();
SSLEngine sslEngine = workerThread.getSSLEngine();
ByteBuffer outputBB = workerThread.getOutputBB();
return flushChannel(channel,bb,outputBB,sslEngine);
}
/**
* Encrypt the response and flush it using {@link OutputWriter}
* @param channel {@link SelectableChannel} to flush
* @param bb input {@link ByteBuffer}
* @param outputBB output {@link ByteBuffer}
* @param sslEngine {@link SSLEngine}
* @return number of bytes written
* @throws java.io.IOException
*/
public static long flushChannel(SelectableChannel channel, ByteBuffer bb,
ByteBuffer outputBB, SSLEngine sslEngine) throws IOException{
long nWrite = 0;
while (bb.hasRemaining()) {
SSLEngineResult result = SSLUtils.wrap(bb,outputBB,sslEngine);
switch (result.getStatus()) {
case OK:
if (result.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
SSLUtils.executeDelegatedTask(sslEngine);
}
break;
default:
throw new IOException("SSLOutputWriter: " + result.getStatus());
}
if (outputBB.hasRemaining()) {
nWrite += OutputWriter.flushChannel(channel,outputBB);
}
}
outputBB.clear();
return nWrite;
}
}