/*

 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.net.httpserver;

import java.io.*;

import javax.net.ssl.*;

import java.nio.channels.*;

import java.lang.System.Logger;

import java.lang.System.Logger.Level;

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;

    volatile long creationTime; // time this connection was created

    volatile long rspStartedTime; // time we started writing the response

    int remaining;

    boolean closed = false;

    Logger logger;

    public enum State {IDLE, REQUEST, RESPONSE};

    volatile State state;

    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;

    }

    State getState() {

        return state;

    }

    void setState (State s) {

        state = s;

    }

    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.log (Level.TRACE, "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;

    }

}