/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.impl.conn;

import java.io.IOException;
import java.io.InputStream;
import java.io.InterruptedIOException;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;

import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.Header;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.config.MessageConstraints;
import org.apache.http.conn.SocketClientConnection;
import org.apache.http.entity.ContentLengthStrategy;
import org.apache.http.impl.DefaultBHttpClientConnection;
import org.apache.http.io.HttpMessageParserFactory;
import org.apache.http.io.HttpMessageWriterFactory;
import org.apache.http.protocol.HttpContext;

class SocketClientConnectionImpl extends DefaultBHttpClientConnection
                                 implements SocketClientConnection, HttpContext {

    private static final AtomicLong COUNT = new AtomicLong();

    private final String id;
    private final Log log;
    private final Log headerlog;
    private final Wire wire;
    private final Map<String, Object> attributes;

    private volatile boolean shutdown;

    public SocketClientConnectionImpl(
            int buffersize,
            final CharsetDecoder chardecoder,
            final CharsetEncoder charencoder,
            final MessageConstraints constraints,
            final ContentLengthStrategy incomingContentStrategy,
            final ContentLengthStrategy outgoingContentStrategy,
            final HttpMessageWriterFactory<HttpRequest> requestWriterFactory,
            final HttpMessageParserFactory<HttpResponse> responseParserFactory) {
        super(buffersize, chardecoder, charencoder,
                constraints, incomingContentStrategy, outgoingContentStrategy,
                requestWriterFactory, responseParserFactory);
        this.id = "http-outgoing-" + COUNT.incrementAndGet();
        this.log = LogFactory.getLog(getClass());
        this.headerlog = LogFactory.getLog("org.apache.http.headers");
        this.wire = new Wire(LogFactory.getLog("org.apache.http.wire"), this.id);
        this.attributes = new ConcurrentHashMap<String, Object>();
    }

    public SocketClientConnectionImpl(int buffersize) {
        this(buffersize, null, null, null, null, null, null, null);
    }

    @Override
    public void close() throws IOException {
        if (this.log.isDebugEnabled()) {
            this.log.debug(this.id + ": Close connection");
        }
        super.close();
    }

    @Override
    public void shutdown() throws IOException {
        if (this.log.isDebugEnabled()) {
            this.log.debug(this.id + ": Shutdown connection");
        }
        this.shutdown = true;
        super.shutdown();
    }

    @Override
    protected InputStream getSocketInputStream(final Socket socket) throws IOException {
        InputStream in = super.getSocketInputStream(socket);
        if (this.wire.enabled()) {
            in = new LoggingInputStream(in, this.wire);
        }
        return in;
    }

    @Override
    protected OutputStream getSocketOutputStream(final Socket socket) throws IOException {
        OutputStream out = super.getSocketOutputStream(socket);
        if (this.wire.enabled()) {
            out = new LoggingOutputStream(out, this.wire);
        }
        return out;
    }

    @Override
    protected void onResponseReceived(final HttpResponse response) {
        if (response != null && this.headerlog.isDebugEnabled()) {
            this.headerlog.debug(this.id + " << " + response.getStatusLine().toString());
            Header[] headers = response.getAllHeaders();
            for (int i = 0; i < headers.length; i++) {
                this.headerlog.debug(this.id + " << " + headers[i].toString());
            }
        }
    }

    @Override
    protected void onRequestSubmitted(final HttpRequest request) {
        if (request != null && this.headerlog.isDebugEnabled()) {
            this.headerlog.debug(id + " >> " + request.getRequestLine().toString());
            Header[] headers = request.getAllHeaders();
            for (int i = 0; i < headers.length; i++) {
                this.headerlog.debug(this.id + " >> " + headers[i].toString());
            }
        }
    }

    public Object getAttribute(final String id) {
        return this.attributes.get(id);
    }

    public Object removeAttribute(final String id) {
        return this.attributes.remove(id);
    }

    public void setAttribute(final String id, final Object obj) {
        this.attributes.put(id, obj);
    }

    @Override
    public void bind(final Socket socket) throws IOException {
        if (this.shutdown) {
            socket.close(); // allow this to throw...
            // ...but if it doesn't, explicitly throw one ourselves.
            throw new InterruptedIOException("Connection already shutdown");
        }
        super.bind(socket);
    }

    @Override
    public Socket getSocket() {
        return super.getSocket();
    }

    public SSLSession getSSLSession() {
        Socket socket = super.getSocket();
        if (socket instanceof SSLSocket) {
            return ((SSLSocket) socket).getSession();
        } else {
            return null;
        }
    }

}

@@ -5112,42 +5112,31 @@
 or (
-int i = 0; i %3C headers.length; i++
+Header header : headers
 ) %7B%0A
@@ -5189,36 +5189,32 @@
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-s%5Bi%5D
 .toString());%0A  
@@ -5551,42 +5551,31 @@
 or (
-int i = 0; i %3C headers.length; i++
+Header header : headers
 ) %7B%0A
@@ -5640,12 +5640,8 @@
 ader
-s%5Bi%5D
 .toS

Convert 'for' loops to enhanced 'for' loops.