tests: make the TCPDownloadFile test a bit more stressful

now it downloads a ~200MB file and validating md5 on it.

java/cli/com/cloudius/cli/tests/TCPDownloadFile.java

 package com.cloudius.cli.tests;
 
-import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
 import java.net.URL;
-import java.nio.channels.Channels;
-import java.nio.channels.ReadableByteChannel;
+import java.security.MessageDigest;
+
+import com.cloudius.util.MD5;
 
 public class TCPDownloadFile implements Test {
 
+    public static final String _url = "http://mirror.isoc.org.il/pub/fedora/releases/18/Fedora/x86_64/iso/Fedora-18-x86_64-netinst.iso";
+    public static final int _chunk_size = 0x10000;
+    public static final String _expected_md5 = "227acebbc5392a4600349ae0c2d0ffcf";
+        
     @Override
     public boolean run() {
+        
         try {
-            URL website = new URL("http://212.58.244.66/");
-            ReadableByteChannel rbc = Channels.newChannel(website.openStream());
-            FileOutputStream fos = new FileOutputStream("/tmp/bbc.co.uk.html");
-            fos.getChannel().transferFrom(rbc, 0, 1 << 24);
-            fos.close();
+            URL url = new URL(_url);
+            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
+            int rc = conn.getResponseCode();
+            
+            if (rc != HttpURLConnection.HTTP_OK) {
+                System.out.format("error: HTTP response code %d, not 200\n", rc);
+                return (false);
+            }
+            
+            int totlen = conn.getContentLength();
+     
+            InputStream is = conn.getInputStream();
+            MessageDigest m = MessageDigest.getInstance("MD5");
+            m.reset();
+
+            System.out.println("Begining file download...");
+            
+            int bytes=0;
+            int total_bytes = 0;
+            byte[] buf = new byte[_chunk_size];
+            do {
+                bytes = is.read(buf);
+                total_bytes += bytes;
+                System.out.format("\rDownloaded %.2f%%", 
+                        ((float)total_bytes / (float)totlen)*100);
+                if (bytes > 0) {
+                    m.update(buf, 0, bytes);
+                }
+            } while (bytes != -1);
+ 
+            System.out.println("\nFinished downloading");
+            
+            is.close();
+            conn.disconnect();
+            byte[] digest = m.digest();
+            
+            String dl_md5 = MD5.toHex(digest);
+            System.out.format("Downloaded md5: %s\n", dl_md5);
+            System.out.format("Expected md5: %s\n", _expected_md5);
+            
+            if (!dl_md5.equals(_expected_md5)) {
+                System.out.println("error: md5 does not match!");
+                return (false);
+            } else {
+                System.out.println("success: md5 match!");
+            }
+            
         } catch (Exception ex) {
             ex.printStackTrace();
             return (false);
         }
+        
         return (true);
     }
     

static/etc/hosts

 127.0.0.1 localhost osv.local
-212.58.244.66 www.bbc.co.uk
+192.115.211.70 mirror.isoc.org.il