Accessing Java HttpServer from PHP;

Question

Hello all,
I have created an httpserver using 'com.sun.net.httpserver'. Everything works fine except one thing.
When i make this simple call from PHP (http://localhost:8081/something outputs an XML file):-
$url = 'http://localhost:8081/something'; 
$xml = simplexml_load_file($url); 
print_r($xml); Nothing appears and it times out after sometime.
However, while the browser is 'trying' to get the result (from PHP file) if i 'stop' my HttpServer (Java) the result suddenly appears. I am very sure i close all the streams i opened. Does anyone have any idea?
Thanks
Neville

Answer 1

So on doing some debugging i realized that the http thread that started executing may have not exited correctly. That may explain the fact that when i shut the java server down explicitly while the 'php' code waits for some response, the response suddenly appears.
While creating the server i am using:-
server.setExecutor(Executors.newCachedThreadPool());In ThreadPoolExecutor.class
Runnable getTask() { ....
if (state == SHUTDOWN)  // Help drain queue
    r = workQueue.poll();
else if (poolSize > corePoolSize || allowCoreThreadTimeOut)
    r = workQueue.poll(keepAliveTime, TimeUnit.NANOSECONDS);
else
   r = workQueue.take();
if (r != null)
    return r;
if (workerCanExit()) {
...Using the debugger tool took me to the class ThreadPoolExecutor.class which seems to be the bottleneck; This condition is true (poolSize > corePoolSize || allowCoreThreadTimeOut(=false)) and it starts polling. I think maybe this is causing the problem and if it exited maybe the result would appear. Even if the corePoolSize is more than poolsize it seems to be getting stuck in r = workQueue.take();.
I dont know how it works ok with a browser but hangs when PHP request comes into the picture. Strange...
Thanks
Neville