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Message: [QUOTE="David G, post: 550356"] Hello, I have run across a really weird situation with the HttpURLConnection. I always seem to get the following error when connecting (via HttpURLConnection) to a lunux tomcat servlet engine: java.io.IOException: Server returned HTTP response code: 500 for URL: [URL]http://venus/david/utils/formTester.jsp?url=testurl&[/URL] However, when I make a connection to the exact same page on a windows tomcat it works. This is what I'm seeing. When ever I request a static page from tomcat (on linux), it works fine, but if I request a jsp it breaks with the 500 error above. For example: venus is a linux server and davidlg is my development windows 2000 pt.doGet("[URL]http://venus/index.html[/URL]"); // returns the html page pt.doGet("[URL]http://venus:8080/david/utils/password.jsp[/URL]"); // returns error 500 pt.doGet("[URL]http://venus:8080/david/utils/formTester.jsp?url=testurl[/URL]"); // returns error 500 pt.doGet("[URL]http://davidlg:8084/index.html[/URL]"); // returns html pt.doGet("[URL]http://davidlg:8084/apps/utils/password.jsp[/URL]"); // returns generated web page (simple page that looks for cgi parm and prints it) pt.doGet("[URL]http://davidlg:8084/apps/utils/formTester.jsp?url=testurl[/URL]");// returns generated web page (another simple page that prints a form with a cgi parm in it) Anybody have any ideas? This is driving me nuts... Here is my code that makes the connection: public String doGet(String urlString, Hashtable parms) throws ProtocolException, IOException, UnsupportedEncodingException { String name; String value; // make sure there is a ? between the page and parms. Enumeration e = parms.keys(); if (urlString.indexOf("?") < 0) { urlString += "?"; } else if (urlString.indexOf("?") != urlString.length() - 1) { urlString += "&"; } boolean useDepracated = false; log("java.version:" + System.getProperty("java.version")); useDepracated = (System.getProperty("java.version").indexOf("1.2")) == 0; if (useDepracated) { log( "Found earlier version of java (1.2.2), using the" + " depricated version of url encode:"); } while (e.hasMoreElements()) { name = (String)e.nextElement(); value = (String)parms.get(name); // encode the value: if (useDepracated) { value = URLEncoder.encode(value); } else { value = URLEncoder.encode(value, "UTF-8"); } urlString += name + "=" + value + "&"; log(name + "=" + value + "&"); } log("Sending the following to " + urlString); URL url = new URL(urlString); HttpURLConnection conn = (HttpURLConnection)url.openConnection(); conn.setRequestMethod("GET"); conn.setDoOutput(true); PrintWriter out = new PrintWriter(conn.getOutputStream()); out.println(); out.flush(); out.close(); // read the response: //conn.connect(); conn.getResponseMessage(); // OK, Forbidden, etc conn.getResponseCode(); // 200, 404, etc // this is where it throws the 500 error. BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream())); StringBuffer response = new StringBuffer(); String line; while ((line = in.readLine()) != null) { log(line); response.append(line); } in.close(); return response.toString(); } Thanks for any suggestions you have to offer. -David [/QUOTE]

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