I'm trying to connect to the Vines XMPP server from Java using the Smack API. However, when I use the following connection code:
ConnectionConfiguration connectionConfiguration = new ConnectionConfiguration("localhost", 5222);
this.connection = new XMPPConnection(connectionConfiguration);
connection.connect();
connection.login(AUCTION_LOGIN, AUCTION_PASSWORD, AUCTION_RESOURCE);
I receive the following error message:
Caused by: Session establishment not offered by server:
at org.jivesoftware.smack.SASLAuthentication.bindResourceAndEstablishSession(SASLAuthentication.java:456)
I understand the issue to be related to sessions now being deprecated from the XMPP protocol. I've been unsuccessful in finding a way to use the ConnectionConfiguration class and others to work around this problem.
You appear to be using an old, vulnerable Smack version (i.e. < 4.0.0).
The current stable Smack version does not throw such an exception, as it considers session binding to be option. It can even be completly disabled with setLegacySessionDisabled(true).
Related
So i have this task to log activities to a file, but it has to be done
remotely on the server side, Remote logging.
NOTE : Remote Logging has to be in latest version of Log4j2(2.10)
My task was simple
Send logging info to a port.
Log info from port to a file.
My Discoveries
Socket Appender exist which help send info to a port. This is it, you dont need to create a client side code or anything.
Socket appender configuration in log4j2.properties
appender.socket.type = Socket
appender.socket.name= Socket_Appender
appender.socket.host = "IP address"
appender.socket.port = 8101
appender.socket.layout.type = SerializedLayout
appender.socket.connectTimeoutMillis = 2000
appender.socket.reconnectionDelayMillis = 1000
appender.socket.protocol = TCP
Adapting from here. But this is also log4j 1.x adaptation.
I found out that before log4j 2.6 to listen to a port we used TcpSocketServer which started a server using LogEventBridgeThis helped reach that conclusion. This class was in core.net.server which is no longer available.Assuming it is not used anymore and the only similar/closest class, TcpSocketManager.Other links that helped. How to use SocketAppend?
Then i tried this
public static final Logger LOG=LogManager.getLogger(myapp.class.getName());
main(){
LOG.debug("DEBUG LEVEL");
}
and got the following error
main ERROR TcpSocketManager (TCP:IPAddress:8111) caught exception
and will continue: java.net.SocketTimeoutException: connect timed out
I know this work because i made it read to a socket but there was no one listening, but somehow i messed up big time and there was a code change.
I need help how to go ahead. Thank You in advance
The socket server to remotely receive log events has been moved to a separate repository: https://github.com/apache/logging-log4j-tools
This still needs to be released.
I am trying to run a simple program of jcloud. The program is as follows:
String provider = "openstack-nova";
String identity = "Tenant:usename"; // tenantName:userName
String credential = "pass";
novaApi = ContextBuilder.newBuilder(provider).endpoint("http://openstack.infosys.tuwien.ac.at/identity/v2.0")
.credentials(identity, credential).modules(modules).buildApi(NovaApi.class);
regions = novaApi.getConfiguredRegions();
The openstack.infosys is connect via SOCKS proxy on port 7777. I have also enlisted the same on eclipse(Window->Preferences->General->Network Config->SOCKS(Manual)) . However, everytime I run the code I get the following error:
ERROR o.j.h.i.JavaUrlHttpCommandExecutorService - Command not considered safe to retry because request method is POST:
Which is then caused by
Caused by: java.net.SocketTimeoutException: connect timed out
I am able to access the horizon web interface of the same without any issues.
Can someone please help me in understanding what is the possible problem.
You need to tell Apache jclouds about your proxy configuration when creating the context. Have a look at these properties, and pass the ones you need to the overrides method of the ContextBuilder:
Proxy type
Proxy host
Proxy port
Proxy user
Proxy password
My current project includes using of a JavaMail for confirming an user email. The problem I have is that, using eclipse, every time I build & deploy my web application on the local Glassfish server the JavaMail crashes with the following exception:
Severe: java.lang.SecurityException: Access to default session denied
at javax.mail.Session.getDefaultInstance(Session.java:333)
at utils.MailService.sendEmailSSL(MailService.java:58)
And here the code snipped where I'm obtaining the session and which is throwing the above exception:
Session session = Session.getDefaultInstance(
props,
new javax.mail.Authenticator(){
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(usr, pwd);
}
});
The workaround I've found so far is restarting Glassfish and after that JavaMail functions properly again. The problem is it is very annoying and time consuming doing a restart even after the smallest change in my code.
My question: Is there a possibility to reset only the JavaMail service and bind this with the build event?
Off course any other suggestions are welcome too :)
If you can avoid using Session.getDefaultInstance. Use Session.getInstance and fix some of the common mistakes.
Is it possible to let the server send messages to all connected clients without waiting for any action from them? Let me explain it :-) I've been reading the docs/examples and I have found nothing that satifies my needs: the flow is always the same; a client connects (e.g: a GET call to a Rest API), the connection is suspendend and until a new API call is received (e.g.: a POST call) the server simply waits (or at least this is what I have understood). My use case is pretty different: I want the server to send some "notifications" once new data become available. This would be my use case (pretty simplifed):
Client A connects to server
Connection is suspended since no new data is available at the moment
The server gets notified new data is available from an external
source and broadcasts it to client A
Go to step 2
What I have achieved so far is getting the connection successfully established. The next step is to solve this server issue. I must say this technology is completely new to me so it is possible I misunderstood how something works. If that's the case, let me know!
This is my stack:
Spring 3.2.0 RELEASE
Jersey 1.8
Atmosphere Jersey 1.0.13
Tomcat 7.0.40
Thank you all in advance!
UPDATE: After following this I get this warning, which I have no idea how to get rid of:
2013-06-04 09:40:36,284 WARN [org.atmosphere.cpr.AtmosphereFramework] - Failed using comet support: org.atmosphere.container.Tomcat7AsyncSupportWithWebSocket, error: Tomcat failed to detect this is a Comet application because context.xml is missing or the Http11NioProtocol Connector is not enabled.
If that's not the case, you can also remove META-INF/context.xml and WEB-INF/lib/atmosphere-compat-tomcat.jar Is the Nio or Apr Connector enabled?
2013-06-04 09:40:36,285 WARN [org.atmosphere.cpr.AtmosphereFramework] - Using org.atmosphere.container.Tomcat7BIOSupportWithWebSocket
I followed the app structure commented here, so this should not be a problem. I have noticed that by changing the transport to "websocket" instead of "long-polling" shows no errors. The server finally sends data tough :)
I followed your link and modified the code a little.
When you are in the step 3 "The server gets notified new data is available from an external source and broadcasts it to client A", you have to write a line like this:
BroadcasterFactory.getDefault().lookup("/*").broadcast(response);
At first I used the TextMessage received from my ActiveMQ Queue but I get this error, so I used a Jackson class as an object response and everything worked fine.
SEVERE: A message body writer for Java class org.apache.activemq.command.ActiveMQTextMessage, and Java type class org.apache.activemq.command.ActiveMQTextMessage, and MIME media type application/json was not found
jun 03, 2014 11:32:21 AM com.sun.jersey.spi.container.ContainerResponse write
SEVERE: The registered message body writers compatible with the MIME media type are:
application/json (JSONJAXBElementProvider, JSONArrayProvider, JSONObjectProvider, JSONRootElementProvider, JSONListElementProvider, ...)
I am trying to write a GWT back-end using the RPC model for java servlets.
Is it possible to ssh tunnel within an RPC in order to communicate with a remote sql database?
The code I try to execute is below, using Jsch. The error occurs on "session.connect();"
String host="xxxxx.xxx.edu";
String user="username";
String password="password";
Session session= null;
try{
//Set StrictHostKeyChecking property to no to avoid UnknownHostKey issue
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
}
The runtime error I get on the 'session.connect()' line is as follows: (scroll right to see whole error)
com.jcraft.jsch.JSchException: java.security.AccessControlException: access denied (java.net.SocketPermission xxxxx.xxx.edu resolve)
at com.jcraft.jsch.Util.createSocket(Util.java:341)
at com.jcraft.jsch.Session.connect(Session.java:194)
at com.jcraft.jsch.Session.connect(Session.java:162)
at com.front.server.GameServiceImpl.createGame(GameServiceImpl.java:39)
The frustrating part about this is that I copied/pasted the exact same code into a simple java program and it works. So I know the code is correct; obviously the jetty server which GWT creates for local testing has a problem executing the code. What else can I do / what should I be doing in this situation with GWT? Shouldn't the back-end of a GWT application have the capacity to ssh??
I suggest you try running your gwt app with a different web container (Tomcat, JBoss). You can still make use of debugging functionality by running the hosted mode with the -noserver flag.
See here