commons-net.jar is the bytecode of Apache Commons Net library, which implements the client side of many basic Internet protocols.

Apache Commons Net Source Code files are provided in the binary packge (commons-net-3.8.0-bin.zip). You can download it at Apache Commons Net Website.

The source code of commons-net-3.8.0.jar is provided below:

⏎ org/apache/commons/net/io/SocketInputStream.java

/*
 * 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.
 */

package org.apache.commons.net.io;

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;

/**
 * This class wraps an input stream, storing a reference to its originating
 * socket.  When the stream is closed, it will also close the socket
 * immediately afterward.  This class is useful for situations where you
 * are dealing with a stream originating from a socket, but do not have
 * a reference to the socket, and want to make sure it closes when the
 * stream closes.
 *
 *
 * @see SocketOutputStream
 */

public class SocketInputStream extends FilterInputStream
{
    private final Socket socket;

    /**
     * Creates a SocketInputStream instance wrapping an input stream and
     * storing a reference to a socket that should be closed on closing
     * the stream.
     *
     * @param socket  The socket to close on closing the stream.
     * @param stream  The input stream to wrap.
     */
    public SocketInputStream(final Socket socket, final InputStream stream)
    {
        super(stream);
        this.socket = socket;
    }

    /**
     * Closes the stream and immediately afterward closes the referenced
     * socket.
     *
     * @throws IOException  If there is an error in closing the stream
     *                         or socket.
     */
    @Override
    public void close() throws IOException
    {
        super.close();
        socket.close();
    }
}

⏎ org/apache/commons/net/io/SocketInputStream.java

Or download all of them as a single archive file:

File name: commons-net-3.8.0-sources.jar
File size: 437325 bytes
Release date: 2020-01-22
Download 

⇒ Download and Install commons-net.jar Binary Package

⇐ What Is commons-net.jar

⇑ Downloading and Reviewing commons-net.jar

⇑⇑ FAQ for Apache commons-net.jar