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package com.sun.enterprise.web.portunif;
import com.sun.enterprise.web.connector.grizzly.ByteBufferInputStream;
import com.sun.enterprise.web.portunif.util.ProtocolInfo;
import com.sun.enterprise.web.portunif.util.Redirector;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
/**
* Redirect the request to the proper protocol, which can be http or https.
*
* @author Jeanfrancois Arcand
*/
public class HttpProtocolHandler implements ProtocolHandler{
private static final int DEFAULT_HTTP_HEADER_BUFFER_SIZE = 48 * 1024;
/**
* The protocols supported by this handler.
*/
protected String[] protocols = {"https","http"};
/**
* Util to redirect protocol.
*/
private Redirector redirector;
public HttpProtocolHandler() {
}
/**
* Redirect the request to the protocol defined in the
* protocolInfo. Protocols supported are http and https.
*
* @param protocolInfo The protocol that needs to be redirected.
*/
public void handle(ProtocolInfo protocolInfo) throws IOException {
if (redirector == null){
redirector = new Redirector();
}
if (protocolInfo.protocol.equalsIgnoreCase("https")) {
redirector.redirectSSL(protocolInfo);
} else {
redirector.redirect(protocolInfo);
}
protocolInfo.keepAlive = false;
/* ======================================================
* Java HTTP(S) client sends request in 2 chunks: header, payload
* We need to make sure client started to send payload before redirecting/closing
* the connection. Otherwise client can not receive "HTTP 302 redirect" response.
*/
ByteBuffer tmpBuffer = protocolInfo.byteBuffer;
tmpBuffer.clear();
ByteBufferInputStream is = new ByteBufferInputStream(tmpBuffer);
try {
is.setReadTimeout(2);
is.setSelectionKey(protocolInfo.key);
int count = 0;
while (tmpBuffer.hasRemaining() && count < DEFAULT_HTTP_HEADER_BUFFER_SIZE) {
tmpBuffer.position(tmpBuffer.limit());
int readBytes = is.read();
if (readBytes == -1) break;
count += readBytes;
}
} catch(IOException e) {
// ignore
} finally {
is.close();
}
//=========================================================
}
/**
* Returns an array of supported protocols.
* @return an array of supported protocols.
*/
public String[] getProtocols() {
return protocols;
}
/**
* Invoked when the SelectorThread is about to expire a SelectionKey.
* @return true if the SelectorThread should expire the SelectionKey, false
* if not.
*/
public boolean expireKey(SelectionKey key){
return true;
}
}