I have java 6 embedded HttpServer. It has a handle which allows clients to download a big text file. The problem is that whenthe server has more then 10 simultaneous clients, i get out of memory exception. I'm prety sure that the problem is around the Http Server.
HttpServer m_server = HttpServer.create(new InetSocketAddress(8080), 0);
m_server.createContext("/DownloadFile", new DownloadFileHandler() );
public class DownloadFileHandler implements HttpHandler {
private static byte[] myFile = new String("....................").getBytes(); //string about 8M
@Override
public void handle(HttpExchange exchange) throws IOException {
exchange.sendResponseHeaders(HTTP_OK, myFile .length); OutputStream responseBody = exchange.getResponseBody();
responseBody.write(myFile );
responseBody.close();
}
}
Now the exception i get is:
java.lang.OutOfMemoryError: Java heap space
at java.nio.HeapByteBuffer.<init>(Unknown Source)
at java.nio.ByteBuffer.allocate(Unknown Source)
at sun.net.httpserver.Request$WriteStream.write(Unknown Source)
at sun.net.httpserver.FixedLengthOutputStream.write(Unknown Source)
at java.io.FilterOutputStream.write(Unknown Source)
at sun.net.httpserver.PlaceholderOutputStream.write(Unknown Source)
at com.shunra.javadestination.webservices.DownloadFileHandler.handle(Unknown Source)
at com.sun.net.httpserver.Filter$Chain.doFilter(Unknown Source)
at sun.net.httpserver.AuthFilter.doFilter(Unknown Source)
at com.sun.net.httpserver.Filter$Chain.doFilter(Unknown Source)
at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(Unknown Source)
at com.sun.net.httpserver.Filter$Chain.doFilter(Unknown Source)
at sun.net.httpserver.ServerImpl$Exchange.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "pool-1-thread-24" java.lang.OutOfMemoryError:
The suggestion regarding the getBytes() doesn't change the exception. i have tried to hold a static reference to byte[] instead of creating it each time. And I still get the same exception.