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/*
 * @(#)HttpConnection.java	1.7 07/01/02
 *
 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package sun.net.httpserver;

import java.io.*;
import javax.net.ssl.*;
import java.nio.channels.*;
import java.util.logging.Logger;
import com.sun.net.httpserver.*;
import com.sun.net.httpserver.spi.*;

/**
 * encapsulates all the connection specific state for a HTTP/S connection
 * one of these is hung from the selector attachment and is used to locate
 * everything from that.
 */
class HttpConnection {

    HttpContextImpl context;
    SSLEngine engine;
    SSLContext sslContext;
    SSLStreams sslStreams;

    /* high level streams returned to application */
    InputStream i;

    /* low level stream that sits directly over channel */
    InputStream raw;
    OutputStream rawout;

    SocketChannel chan;
    SelectionKey selectionKey;
    String protocol;
    long time;
    int remaining;
    boolean closed = false;
    Logger logger;
    
    public String toString() {
	String s = null;
	if (chan != null) {
	    s = chan.toString();
	}
	return s;
    }

    HttpConnection () {
    }

    void setChannel (SocketChannel c) {
	chan = c;
    }

    void setContext (HttpContextImpl ctx) {
	context = ctx;
    }

    void setParameters (
	InputStream in, OutputStream rawout, SocketChannel chan,
	SSLEngine engine, SSLStreams sslStreams, SSLContext sslContext, String protocol,
	HttpContextImpl context, InputStream raw
    )
    {
	this.context = context;
	this.i = in;
	this.rawout = rawout;
	this.raw = raw;
	this.protocol = protocol;
	this.engine = engine;
	this.chan = chan;
	this.sslContext = sslContext;
	this.sslStreams = sslStreams;
	this.logger = context.getLogger();
    }

    SocketChannel getChannel () {
	return chan;
    }

    synchronized void close () {
	if (closed) {
	    return;
	}
	closed = true;
	if (logger != null && chan != null) {
	    logger.finest ("Closing connection: " + chan.toString());
	}
	    
        if (!chan.isOpen()) {
	    ServerImpl.dprint ("Channel already closed");
	    return;
        }
	try {
	    /* need to ensure temporary selectors are closed */
	    if (raw != null) {
		raw.close();
	    }
	} catch (IOException e) {
	    ServerImpl.dprint (e);
	}
	try {
	    if (rawout != null) {
		rawout.close();
	    }
	} catch (IOException e) {
	    ServerImpl.dprint (e);
	}
	try {
	    if (sslStreams != null) {
		sslStreams.close();
	    }
	} catch (IOException e) {
	    ServerImpl.dprint (e);
	}
	try {
	    chan.close();
	} catch (IOException e) {
	    ServerImpl.dprint (e);
	}
    }

    /* remaining is the number of bytes left on the lowest level inputstream
     * after the exchange is finished
     */
    void setRemaining (int r) {
	remaining = r;
    }

    int getRemaining () {
	return remaining;
    }

    SelectionKey getSelectionKey () {
	return selectionKey;
    }

    InputStream getInputStream () {
	    return i;
    }

    OutputStream getRawOutputStream () {
	    return rawout;
    }

    String getProtocol () {
	    return protocol;
    }

    SSLEngine getSSLEngine () {
	    return engine;
    }

    SSLContext getSSLContext () {
	    return sslContext;
    }

    HttpContextImpl getHttpContext () {
	    return context;
    }
}