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Tomcat example source code file (SocketReceive.java)

This example Tomcat source code file (SocketReceive.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

bigdecimal, bigdecimal, decimalformat, decimalformat, exception, inputstream, io, math, net, network, serversocket, serversocket, socket, socketreceive, text, thread, thread

The Tomcat SocketReceive.java source code

/*
 * 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.catalina.tribes.test.transport;

import java.net.ServerSocket;
import java.net.Socket;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.math.BigDecimal;

public class SocketReceive {
    static long start = 0;
    static double mb = 0;
    static byte[] buf = new byte[8192 * 4];
    static boolean first = true;
    static int count = 0;
    static DecimalFormat df = new DecimalFormat("##.00");
    static BigDecimal total = new BigDecimal(0);
    static BigDecimal bytes = new BigDecimal(32871);

    
    public static void main(String[] args) throws Exception {
    
        ServerSocket srvSocket = new ServerSocket(9999);
        System.out.println("Listening on 9999");
        Socket socket = srvSocket.accept();
        socket.setReceiveBufferSize(43800);
        InputStream in = socket.getInputStream();
        Thread t = new Thread() {
            public void run() {
                while ( true ) {
                    try {
                        Thread.sleep(1000);
                        printStats(start, mb, count, df, total);
                    }catch ( Exception x ) {}
                }
            }
        };
        t.setDaemon(true);
        t.start();

        while ( true ) {
            if ( first ) { first = false; start = System.currentTimeMillis();}
            int len = in.read(buf);
            if ( len == -1 ) {
                printStats(start, mb, count, df, total);
                System.exit(1);
            }
            if ( bytes.intValue() != len ) bytes = new BigDecimal((double)len);
            total = total.add(bytes);
            mb += ( (double) len) / 1024 / 1024;
            if ( ((++count) % 10000) == 0 ) {
                printStats(start, mb, count, df, total);
            }
        }
        
    }

    private static void printStats(long start, double mb, int count, DecimalFormat df, BigDecimal total) {
        long time = System.currentTimeMillis();
        double seconds = ((double)(time-start))/1000;
        System.out.println("Throughput "+df.format(mb/seconds)+" MB/seconds messages "+count+", total "+mb+" MB, total "+total+" bytes.");
    }
}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat SocketReceive.java source code file:

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