src/java.base/share/classes/sun/net/www/http/HttpCaptureOutputStream.java

/*
 * Copyright (c) 2009, 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
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package sun.net.www.http;
import java.io.*;

/**
 * A Simple FilterOutputStream subclass to capture HTTP traffic.
 * Every byte written is also passed to the HttpCapture class.
 *
 * @author jccollet
 */
public class HttpCaptureOutputStream extends FilterOutputStream {
    private HttpCapture capture = null;

    public HttpCaptureOutputStream(OutputStream out, HttpCapture cap) {
        super(out);
        capture = cap;
    }

    @Override
    public void write(int b) throws IOException {
        capture.sent(b);
        out.write(b);
    }

    @Override
    public void write(byte[] ba) throws IOException {
        for (byte b : ba) {
            capture.sent(b);
        }
        out.write(ba);
    }

    @Override
    public void write(byte[] b, int off, int len) throws IOException {
        for (int i = off; i < len; i++) {
            capture.sent(b[i]);
        }
        out.write(b, off, len);
    }

    @Override
    public void flush() throws IOException {
        try {
            capture.flush();
        } catch (IOException iOException) {
        }
        super.flush();
    }
}