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POCalculating network download speed
 

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    <p>I have written the follwing code to calculate download speed using java. But it is not giving correct results.What is the problem?.Is there a problem with my logic , or is it a problem with java networking classes usage?I think it is a problem with the usage of java networking classes.Can anybody tell me what exactly the problem is?</p> <pre><code>/*Author:Jinu Joseph Daniel*/ import java.io.*; import java.net.*; class bwCalc { static class CalculateBw { public void calculateUploadBw() {} public float calculateDownloadRate(int waitTime) throws Exception { int bufferSize = 1; byte[] data = new byte[bufferSize]; // buffer BufferedInputStream in = new BufferedInputStream(new URL("https://www.google.co.in/").openStream()); int count = 0; long startedAt = System.currentTimeMillis(); long stoppedAt; float rate; while (((stoppedAt = System.currentTimeMillis()) - startedAt) &lt; waitTime) { if ( in .read(data, 0, bufferSize) != -1) { count++; } else { System.out.println("Finished"); break; } } in .close(); rate = 1000 * (((float) count*bufferSize*8 / (stoppedAt - startedAt)) )/(1024*1024);//rate in Mbps return rate; } public float calculateAverageDownloadRate() throws Exception{ int times[] = {100,200,300,400,500}; float bw = 0,curBw; int i = 0, len = times.length; while (i &lt; len) { curBw = calculateDownloadRate(times[i++]); bw += curBw; System.out.println("Current rate : "+Float.toString(curBw)); } bw /= len; return bw; } } public static void main(String argc[]) throws Exception { CalculateBw c = new CalculateBw(); System.out.println(Float.toString(c.calculateAverageDownloadRate())); } } </code></pre>
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    1. USJinu Joseph Daniel
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    1. COPlease post your code here, not via a link.
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      1. USOliver Charlesworth
    2. COSo what results *is* it giving?
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      1. USStephen C
    3. COthe result is increasing when i increase time
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      1. USJinu Joseph Daniel
 

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