Problem reading input stream of urlconnection within portal

Question

Hi,
This may be a generic server issue rather than portal but since it's my portal app that's displaying the problem I'll post it here.
Part of my Portal attempts to POST to a remote server to retrieve some search results.
In environments A & B (both standalone instances) this works fine.
In environment C this works on the managed instances in the cluster but not the admin instance.
In environment D (again standalone) it fails, but if I add a managed instance it works from the managed instance.
The problem I'm seeing is that I get a stuck thread and the thread dump shows it is blocked attempting to read the resulting input from a urlconnection. (Using a buffered input stream).
I've copied the code to a standalone class that runs fine from the same server(s). I've pasted this code below, the contents of the test() method were copied directly from my webapp (urls changed here for clarity).
Does anyone know of any securitymanager issues that may cause this?
Or anything else for that matter?
Code sample:
package src.samples;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
public class POSTTest {
     public static boolean test()
     URL url = null;
     try {
     url = new URL
("http://hostx:80/myapp/search.html");
     catch (MalformedURLException e)
     e.printStackTrace();
     return false;
     URLConnection urlConn;
     DataOutputStream printout;
     BufferedReader input;
     urlConn = null;
     try {
     urlConn = url.openConnection();
     catch (IOException e)
     e.printStackTrace();
     return false;
     // Let the run-time system (RTS) know that we want input.
     urlConn.setDoInput (true);
     // Let the RTS know that we want to do output.
     urlConn.setDoOutput (true);
     // No caching, we want the real thing.
     urlConn.setUseCaches (false);
     // Specify the content type.
     urlConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
     // Send POST output (this is a POST because we write then read as per the JDK Javadoc)
     printout = null;
     String body = "";
     try {
     System.out.println("url=" + url.toString());
     printout = new DataOutputStream (urlConn.getOutputStream ());
     String content = "param1=A&param2=B&param3=C&param4=D&param5=E";
     System.out.println("urlParams= " + content);
     printout.writeBytes (content);
     System.out.println("written parameters");
     printout.flush ();
     System.out.println("flushed parameters");
     printout.close ();
     System.out.println("closed parameter stream");
     // <b>Get response data - this is where it blocks indefinitely</b>
     input = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
     System.out.println("got input");
     String str;
     while (null != ((str = input.readLine()))) {
     body = body + str + "\n";
     System.out.println("read input:");
     System.out.println(body);
     input.close ();
     System.out.println("closed input stream");
     catch (IOException e) {
     System.out.println("IOException caught: read failed");
     e.printStackTrace();
     return false;
     return true;
     * @param args
     public static void main(String[] args) {
          System.out.println("Test result= " + test());

Answer 1

In your recuperar() method, read the FTP input stream into a byte array. (You can do that by copying it to a ByteArrayOutputStream and then getting the byte array from that object.) Then, return a ByteArrayInputStream based on those bytes. After you call completePendingCommand(), of course.
That's one way.
PC&#178;