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• RMI applet is making requests on random ports and blocked consequently

  - by Dan

  /// I have set up RMI system successfully on local ubuntu srver. Registry port 1099 and remote object export on 1100(fixed by calling super(1100)) Now I am trying to make it work on Ubuntu over internet with a public IP. I could bind service properly with public ip.But the client applet is trying to connect to ubuntu server at random ports. Below is the error thrown by client applet: // Exception network: Connecting public-ip:1100 with proxy=DIRECT network: Connecting public-ip/cgi-bin/java-rmi.cgi?forward=1099 with proxy=DIRECT network: Connecting public-ip:3733 with proxy=DIRECT network: Connecting public-ip:3721 with proxy=DIRECT // java.rmi.ConnectException: Connection refused to host: public-ip; nested exception is: java.net.ConnectException: Connection refused: connect at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)Source) at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ... // // I have only 2 ports open on server, i.e., 1099(registry) and 1100(export). How can I fix ports in applet requests such that it does always connect server on same open port? // // Another issue.As I have bound service on public IP i.e. //public-ip:1099/ServiceName, a job running on server to send message to clinets is not able to make request to RMI service. public-ip URL does not work on same machine,i.e., server.Do you think I should use fixed socket factory?If so please give me code snippet and guide me how i can set it up. //Exception java.rmi.ConnectException: Connection refused to host: public-ip; nested exception is: java.net.ConnectException: Connection refused at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:128) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:194) at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:148) at $Proxy5.getUserID(Unknown Source) at rmi.source.xxxxxx$JobScheduler.run(xxxxServerImpl.java:293) at java.util.TimerThread.mainLoop(Timer.java:555) at java.util.TimerThread.run(Timer.java:505) Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:337) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:198) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at java.net.Socket.(Socket.java:425) at java.net.Socket.(Socket.java:208) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613) ... 9 more Coould you please help me? Thanks a lot in advance. Dan

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• Cocoa-Touch framework for speaking to a TCP socket?

  - by Coocoo4Cocoa

  I have a daemon running on a server that's latched onto a TCP/IP port. I'm looking to see if there's currently any support iPhone/Cocoa-touch frameworks that gives a nice OO wrapper for speaking to the daemon over an IP socket. I need to be able to interactively query the daemon with commands and retrieve back information. If there isn't any OO wrappers for such a task, what's the next best bet?

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• Strategy for developing namespaced and non-namespaced versions of same PHP code

  - by porneL

  I'm maintaining library written for PHP 5.2 and I'd like to create PHP 5.3-namespaced version of it. However, I'd also keep non-namespaced version up to date until PHP 5.3 becomes so old, that even Debian stable ships it ;) I've got rather clean code, about 80 classes following Project_Directory_Filename naming scheme (I'd change them to \Project\Directory\Filename of course) and only few functions and constants (also prefixed with project name). Question is: what's the best way to develop namespaced and non-namespaced versions in parallel? Should I just create fork in repository and keep merging changes between branches? Are there cases where backslash-sprinkled code becomes hard to merge? Should I write script that converts 5.2 version to 5.3 or vice-versa? Should I use PHP tokenizer? sed? C preprocessor? Is there a better way to use namespaces where available and keep backwards compatibility with older PHP?

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• Restart Delphi Application Programmatically

  - by Smasher

  It should not be possible to run multiple instances of my application. Therefore the project source contains: CreateMutex (nil, False, PChar (ID)); if (GetLastError = ERROR_ALREADY_EXISTS) then Halt; Now I want to restart my application programmatically. The usual way would be: AppName := PChar(Application.ExeName) ; ShellExecute(Handle,'open', AppName, nil, nil, SW_SHOWNORMAL) ; Application.Terminate; But this won't work in my case because of the mutex. Even if I release the mutex before starting the second instace it won't work because shutdown takes some time and two instance cannot run in parallel (because of common resources and other effects). Is there a way to restart an application with such characteristics? (If possible without an additional executable) Thanks in advance.

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• iphone,cocoa, how do you think on KVC and KVO in cocoa ?

  - by Robin

  if your app use this solution , do do you plan port the app to other platform ? for example, iPhone app -- Android or Backberry. I do not want user it , but some code is exist ...

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• Feed paper on POS Printer C#

  - by evargas

  I've been trying to programatically feed the paper on a pos printer (Epson TM-U220D). The problem I have is that the last line of the document don't get printed, instead, it is printed as the first line of the next document printed. I tried POS for .NET sending the "ESC|flF" command, also tried to send the raw esc/pos command using the serial port, but it doesn't work. Any ideas?

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• New Bluetooth API question

  - by Ralphz

  I have written a small app that puts my bluetooth in discoverable mode for a long time (G1 - API 1.6). I use that along with small program on windows to lock/unlock the computer if the phone is close by. Recently i try to port this app to my nexus one but it seems like i have to pop up the message every 300s to enable device to go to discoverable mode. does anyone know how i can suppress that? I'm ok with saying ok for the first time but not every 300s :)

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• Avoid copying of data between user and kernel space and vice-versa

  - by bala1486

  Hello, I am developing a active messaging protocol for parallel computation that replaces TCP/IP. My goal is to decrease the latency of a packet. Since the environment is a LAN, i can replace TCP/IP with simpler protocol to reduce the packet latency. I am not writing any device driver and i am just trying to replace the TCP/IP stack with something simpler. Now I wanted to avoid copying of a packet's data from user space to kernel space and vice-versa. I heard of the mmap(). Is it the best way to do this? If yes, it will be nice if you can give links to some examples. I am a linux newbie and i really appreciate your help.. Thank you... Thanks, Bala

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• How to play MP3's from socket connections in Flash AS3?

  - by Ole Jak

  How to play mp3's from socket connections in Flash AS3? I have some simple programm which is listening to some port (TCP). I connect to it using as3 sockets and it starts sending me mp3 data How to play that data?

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• php mysql database users connection handling

  - by aviv

  What is the best way to handle mysql database users connection in PHP? I have a web server running a PHP application on MySQL. I have created a database user for the application: dbuser1 with limited access - only for query, insert and update tables. No alter table. Now the question is, should i use the same dbuser1 widely in my scripts, so if there are 100 current people using my system and hence 100 scripts running parallel they all connect to the database with the same dbuser1? or should i create a few users and assign each script a different user or load-balance between the dbusers ?

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• Send Mail through Jsp page.

  - by sourabhtaletiya

  hi friends ,i have tried alot to send mail via jsp page but i am not succeded. A error is coming javax.servlet.ServletException: 530 5.7.0 Must issue a STARTTLS command first. x1sm5029316wbx.19 <html> <head> <title>JSP JavaMail Example </title> </head> <body> <%@ page import="java.util.*" %> <%@ page import="javax.mail.*" %> <%@ page import="javax.mail.internet.*" %> <%@ page import="javax.activation.*" %> <% java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); Properties props = System.getProperties(); props.put("mail.smtp.starttls.enable","true"); props.put("mail.smtp.starttls.required","true"); String host = "smtp.gmail.com"; String to = request.getParameter("to"); String from = request.getParameter("from"); String subject = request.getParameter("subject"); String messageText = request.getParameter("body"); boolean sessionDebug = false; props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.transport.protocol", "smtp"); props.put("mail.smtp.port", "25"); props.put("mail.smtp.auth", "true"); props.put("mail.debug", "true"); props.put("mail.smtp.socketFactory.port","25"); props.put("mail.smtp.starttls.enable","true"); Session mailSession = Session.getDefaultInstance(props, null); mailSession.setDebug(sessionDebug); Message msg = new MimeMessage(mailSession); props.put("mail.smtp.starttls.enable","true"); msg.setFrom(new InternetAddress(from)); InternetAddress[] address = {new InternetAddress(to)}; msg.setRecipients(Message.RecipientType.TO, address); msg.setSubject(subject); msg.setSentDate(new Date()); msg.setText(messageText); props.put("mail.smtp.starttls.enable","true"); Transport tr = mailSession.getTransport("smtp"); tr.connect(host, "sourabh.web7", "june251989"); msg.saveChanges(); // don't forget this props.put("mail.smtp.starttls.enable","true"); tr.sendMessage(msg, msg.getAllRecipients()); tr.close(); // Transport.send(msg); /* out.println("Mail was sent to " + to); out.println(" from " + from); out.println(" using host " + host + ".");*/ %> </table> </body> </html>

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• How to integrate Windows Azure, Spring.NET and NHibernate?

  - by paologios

  Hi, we have a ASP.NET web application which makes use of NHibernate and Spring.NET (to do the session and transaction management stuff). Now we want to port parts of it to a Windows Azure application without making lots of changes to the used components. I already found this article of stackoverflow so I hope to get NHibernate running on Azure. My question: Has anybody experiences in running Spring.NET on Azure (with or without NHibernate) ??

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• how to upload a file from php to amqp

  - by user2462648

  i want to know... how can i send a file to a rabbitmq queue from php. i have gone through many examples most of them didnt work. below is a consumer producer example which is near to working. Below is a the publisher.php <?php require_once('../php-amqplib/amqp.inc'); include('../config.php'); $conn = new AMQPConnection(HOST, PORT, USER, PASS, VHOST); $channel = $conn->channel(); $channel->exchange_declare('upload-pictures','direct', false, true, false); $metadata = json_encode(array( 'image_id' => $argv[1], 'user_id' => $argv[2], 'image_path' => $argv[3] )); $msg = new AMQPMessage($metadata, array('content_type' => 'text/plain','delivery_mode' => 2)); $channel->basic_publish($msg, 'upload-pictures'); $channel->close(); $conn->close(); ?> consumer.php <?php require_once('../php-amqplib/amqp.inc'); include('../config.php'); $conn = new AMQPConnection(HOST, PORT, USER, PASS,VHOST); $channel = $conn->channel(); $queue = 'add-points'; $consumer_tag = 'consumer'; $channel->exchange_declare('upload-pictures','direct', false, true, false); $channel->queue_declare('add-points',false, true, false, false); $channel->queue_bind('add-points', 'upload-pictures'); $consumer = function($msg){}; $channel->basic_consume($queue,$consumer_tag,false,false,false,false,$consumer); ?> according to the example provided in the rabbitmq manual, i need to run consumer(php consumer.php) first in one terminal and the publisher (php publisher.php 1 2 file/path.png) in another terminal, i will get a "Adding points to user: 2" message in the consumer terminal. iam not getting this message at all. can you suggest where iam going wrong

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• liferay portal with asp.net

  - by harrisonmeister

  Hi This is a java noob related question. Have been looking at Liferay portal technology, however I'm a dotnet (c# or vb) developer by day. Does anyone know if you can use the install of liferay to host dotnet code, not just by using the iFrame method of redirecting to a different site - that just sucks in my opinion Alternatively is the saner option to go down the port my skills back to java? Thanks Mark

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• MySQL app with Cassandra in mind

  - by SODA

  I am planning to make a web app which will eventually use Cassandra. But now that I don't have it and don't have server(s) to run it from, I'd like to start by using MySQL. The question is, is it possible to structure data and queries in such a way that it would be fairly easy to later port it to Cassandra? Main idea, I guess, would be writing MySQL queries that would be possible to change to same Cassandra queries. Maybe you have a better suggestion?

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• Processing: popen() call to start subprocess?

  - by Mark Harrison

  Here's an example of opening and reading data from a TCP socket. Is there a a popen() call or equivalent that can start a child process and read its output? void setup() { c = new Client(this, "127.0.0.1", 12345); // Replace with your server's IP and port } void draw() { if (c.available() > 0) { input = c.readString(); http://www.processing.org/learning/libraries/sharedcanvasclient.html

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• Create java sandbox based on security policies

  - by argos

  I need to create environment to run potentially untrusted code. Program allowed to connect to preconfigured address:port and nothing else (even read the system time). I have compiled the class whitelist. I'd searched similar questions, but found only template that based on SecurityManager which AFAIK is deprecated. Can anybody give me a simple sample how to run code in sandbox based on security policies and AccessController?

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• Setting jvmargs in log4j.properties file

  - by Thomas

  Hey This is a bit of a weird request but I am trying to set some jvmargs in the log4j.properties file. At present I use ant to for example set some args.... jvmarg value="-Dmail.smtp.socketFactory.port=465" ... but it would be great to group a few of these logging relevant arguments into the .properties file. Does anyone know how to do this? Thanks in advance!

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• How do I forward a request to a different url in python

  - by tax

  import SimpleHTTPServer import SocketServer class myHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): def do_GET(self): print self.path if self.path == '/analog': return "http://someserver.com/analog" return SimpleHTTPServer.SimpleHTTPRequestHandler.do_GET(self) theport = 1234 Handler = myHandler pywebserver = SocketServer.TCPServer(("", theport), Handler) print "Python based web server. Serving at port", theport pywebserver.serve_forever()

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• how to check the mail functionality in local host server?

  - by udaya

  Hi I am sending email from my localhost There occurs a server error Failed to connect to mailserver at "smtp.bizmail.yahoo.com" port 465, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() when i host my project to the server my function works Now i need a solution such that the mail functionality must work in my localhost too

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• How to implement a timeout in read function call?

  - by sasayins

  Hi, I want to use serial com port for communication and I want to implement a timeout every time I call the read function call. int filedesc = open( "dev/ttyS0", O_RDWR ); read( filedesc, buff, len ); Thanks

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• UNIX find for finding file names NOT ending in specific extensions?

  - by Cristi Diaconescu

  Is there a simple way to recursively find all files in a directory hierarchy, that do not end in a list of extensions? E.g. all files that are not *.dll or *.exe UNIX/GNU find, powerful as it is, doesn't seem to have an exclude mode (or I'm missing it), and I've always found it hard to use regular expressions to find things that don't match a particular expression. I'm in a Windows environment (using the GnuWin32 port of most GNU tools), so I'm equally open for Windows-only solutions.

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• iPad / iPhone Sync (WLAN or Inet)

  - by tobi

  I have actually one app with a SQLite DB and i port this at the moment to the ipad. My idea is a sync between iPad and iPhone for one table... But the Problem is "Person A" edit/change, create or delete a data record on iphone and "Person B" make the same or delete the edited record from Person A on the same time. Has anybody a idea for this? Or a nice lib for this?

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• Where are the static methods in gcc's dump file.c.135r.jump

  - by Customizer

  When I run gcc with the parameter -fdump-rtl-jump, I get a dump file with the name file.c.135r.jump, where I can read some information about the intermediate representation of the methods in my C or C++ file. I just recently discovered, that the static methods of a project are missing in this dump file. Do you know, why they are missing in that representation and if there is a possibility to include the static methods in this file, too. Update (some additional information): The test program, I'm using here, is the Hybrid OpenMP MPI Benchmark. Update2: I just reproduced the problem with a serial application, so it has nothing to do with parallel sections.

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• is possible just deny download from TCP/IP?

  - by Kerberos

  Hi all! I want to deny my internet connection's download properties for all port. I mean i want to make just upload. is it possible? Thank you very much for your help, already now.

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