ConnectException: Connection refused (No firewall)

Hi
In my program i need to connect to another PC on the network. I'm currently trying this tutorial: http://java.sun.com/docs/books/tutorial/networking/sockets/clientServer.html
The server PC listens to port 4444 without any problem (No error Message "Could not listen on port: 4444" )
But when the client wants to connect to port 4444, I get this "Connection Refused: connect" error.
On both PC's the firewall has been disabled, so normally all ports should be open???
Some standard ports on the server machine (135,139, 445,...) are open, and I can connect to these ports without any problem.
Anybody has an idea what this problem can be?
Thanks in advance!

Hmmm, reboot did the trick :/
After rebooting, things worked fine. ^^

Similar Messages

Java.rmi.ConnectException: Connection refuse

Hi all,
I have built a simple RMI client server application.I can run client & server fine locally.
However if I test this appplication over the internet, I get this exception on the client:
java.rmi.ConnectException: Connection refused to host: 169.254.157.53; nested exception is:
java.net.ConnectException: Connection timed out: connectConnection refused to host:169.254.157.53
The RMI server is running on my PC and the client on a friend's remote PC.Both PCs are connected to Internet.
I don't have any firewall running on my PC (including windows XP firewall). The server RMI lookup on the client happens correctly,
the exception is raised when the client tries to call the remote method on the server.
Here is an extract of my RMI server code (it works locally):
public static void main(String[] args) throws Exception {
          try {
          // args[0] contains the database server name given as command line argument, arg[1] contains binary path that contains weather jpeg files
          CPrimaryWeatherServer test = new CPrimaryWeatherServer(args[0], args[1]);
          Naming.rebind("rmi://localhost:1099/WeatherPrimaryService", test);
          System.out.println("Serveur m�t�o principal d�marr�");
          } catch (Exception e){ System.out.println(e.getMessage());}
Here is an extract of my RMI client code (it works locally):
try{
                    rec=1;
                    leftClik=1;
                    System.out.println("Before RMI lookup");
                    IPrimaryWeatherServerService serveur =(IPrimaryWeatherServerService)Naming.lookup("rmi://"+primWS+":1099/WeatherPrimaryService");
                    System.out.println("After RMI lookup");
                    System.out.println("Before server method call");
                    z=serveur.getFullWeatherData(); --> exception is raised here
                    System.out.println("After RMI server method call");
I am directly connected to Internet using an ethernet card connected to an ADSL modem.169.254.157.53 is the automatic IP of my network card different from the IP given by my ISP. By the way, the client tries to contact me using my DNS name that resolves correctly to my ISP IP adress.
Thanks a lot for help,

because I am guessing that a local IP address is being embedded into the stub so the clien't can't find the remote server. I am guessing because you didn't provide the exception or its text. Anyway the suggestion will cause the correct public IP address/hostname to be embedded into the stub.

RMI Connection Refused through Firewall

Hi,
I am having problems making an RMI connection through a firewall. On the server outside the firewall I have my servlet application running in an OC4J container and inside the firewall I have an EJB listening on port 6666. I have setup the firewall to allow connections through on port 6666. If I telnet from the machine outside the firewall on port 6666 I am able to make a connection to the EJB. So I know the firewall has been setup to handle the connection.
I run the servlet application and when it tries to make the connection it gives an error:
javax.naming.NamingException: Lookup error: java.net.ConnectException: Connection refused; nested exception is:
java.net.ConnectException: Connection refused
When I do a snoop on the external machine to see what data is trying to be sent to the internal machine there is no data. When doing the telnet test there was data.
I have the same servlet application deployed on a machine internally and it is able to make a connection to the EJB. The only problem is either the configuration of the application server on the external machine or the firewall configuration.
Anyone able to help me see what I am missing?
Thanks
Shawn Clark

not sure what you mean by having a 'EJB listening' on port 6666. Do you mean actually having a socket listening within the EJB code? If so then that is a suspicious EJB activity.
If not then i guess you mean the ORMI listening port of the OC4J application. This is normally set on port 23791 to allow the RMI communication to flow.
-lp

Jndi ConnectException Connection refused

Please can someone help me to understand why I am getting a ConnectException with the following code.
String PROVIDER_URL = "ormi://localhost:23791";
String INITIAL_CONTEXT_FACTORY = "com.evermind.server.rmi.RMIInitialContextFactory";
Properties prop = new Properties();
prop.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
prop.put(Context.PROVIDER_URL, PROVIDER_URL);
InitialContext context = new InitialContext(prop);
return (MimirLoginSessionEJBLocalHome) context.lookup(
"java:comp/env/ejb/local/MimirLoginSessionEJB");
javax.naming.NamingException: Lookup error: java.net.ConnectException: Connection refused: connect; nested exception is:
     java.net.ConnectException: Connection refused: connect [Root exception is java.net.ConnectException: Connection refused: connect]
com.evermind.server.rmi.RMIContext.lookup(RMIContext.java:153)

yes it is!!! sorry i need to sleep.
do you know why now i am trying to exec the client and get this error?
javax.ejb.EJBException: EJB Exception: ; nested exception is:
     java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection; nested exception is: java.rmi.RemoteException: EJB Exception: ; nested exception is:
     java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
java.rmi.RemoteException: EJB Exception: ; nested exception is:
     java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
     at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:234)
     at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:348)
     at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:259)
     at test.model.SessionEJB_qxt9um_SessionEJBRemoteImpl_1032_WLStub.getDescripcionextraFindAll(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:73)
     at $Proxy0.getDescripcionextraFindAll(Unknown Source)
     at test.client.SessionEJBRemoteClient.main(SessionEJBRemoteClient.java:36)
Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
the Model Project has got the MySQL jar library
Thank you!

ConnectException, connection refused

I have an RMI server/client Web applet program working, with the server running on a RHEL4 linux server, and other linux clients.
When I try to run the applet from a browser on a Windows client, I get a connection refused error. I am not setting a security manager,
and both boxes are using Java 1.6.07. The exception and its stack trace are as follows:
java.rmi.ConnectException: Connection refused to host: 100.20.100.10; nested exception is:
     java.net.ConnectException: Connection refused: connect
java.rmi.ConnectException: Connection refused to host: 100.20.100.10; nested exception is:
     java.net.ConnectException: Connection refused: connect
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
     at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
     at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
     at sun.rmi.server.UnicastRef.newCall(Unknown Source)
     at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
     at java.rmi.Naming.lookup(Unknown Source)
     at Client.RepositoryClient.init(RepositoryClient.java:85)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.net.ConnectException: Connection refused: connect
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.checkConnector(Unknown Source)
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source)
     ... 9 more
Any ideas?

Never mind... had edited code and somehow had a Naming.lookup instead of using the object returned by LocateRegistry.getRegistry(URL).
I'm on to the debugging of the access denied issue now...
Sorry, I'm a newbie but I'm learning fast.

Help me pls in ConnectException: Connection refused to host

hi all,
i'm getting the following exception could any one help me out from this.
i have opened two particular ports that r listening for RMI
C:\j2sdk1.4.0-rc\bin\Test>java -Djava.security.policy=allper.policy CallClient
java.rmi.ConnectException: Connection refused to host: xxx.xxx.xxx.xxx; nested ex
ception is: java.net.ConnectException: Connection timed out: connect at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:567) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171) at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:313)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Naming.java:83)
at Client.add(Client.java:146)
at CallClient.main(CallClient.java:47)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:295)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:161)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:148)
at java.net.Socket.connect(Socket.java:425)
at java.net.Socket.connect(Socket.java:375)
at java.net.Socket.<init>(Socket.java:290)
at java.net.Socket.<init>(Socket.java:118)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:122)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:562)
... 7 more
looking for ur help
-shafeeq

hi,
actually it is giving syntax error if i include like this in the client code
systemProperties.put("sun.rmi.transport.connectTimeout",15000);
systemProperties.put("sun.rmi.server.disableHttp","false");
pls guide me how exactly i should include in the client codings.
pls help
-shafeeq
Note: from http://java.sun.com/j2se/1.4/docs/guide/rmi/sunrmiproperties.html/#connectionTimeout
sun.rmi.transport.proxy.connectTimeout (1.1 and later)
The value of this property represents the maximum length of time (in milliseconds) that the RMI runtime will wait for a connection attempt (createSocket) to complete, before attempting to contact the server using HTTP. This property is only used when the http.proxyHost property is set and the value of java.rmi.server.disableHttp is false. The default value is 15000 milliseconds (15 seconds).

Invocation time Exception (java.rmi.ConnectException: Connection refused to

Hi folks,
SERVER = LINUX
CLIENT = WINDOWS 200
JAVA VERSION : 1.4.2
Object obj = Naming.lookup("rmi://x.x.x.x:5578/MyServer");
System.out.println("Object ="+obj); // Works fine and return stub as shown in o/p
MyServer_Stub server = (MyServer_Stub)obj;
server.validate(); // throws following Connection refused exception
-----OUTPUT-----
Object =com.MyServer_Stub[RemoteStub [ref: [endpoint:[x.x.x.x:42360](remote),objID:[a981ca:10722cb9411:-8000, 0]]]]
java.rmi.ConnectException: Connection refused to host: x.x.x.x.x; nested exception is:
     java.net.ConnectException: Connection refused: connect
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:567)
     at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
     at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
     at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:101)[
     at com.MyServer_Stub.validate(Unknown Source)/b]
     at tescasees.testbyexample.rmi.MyServerChangesTestApplication.main
Caused by: java.net.ConnectException: Connection refused: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
     at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
     at java.net.Socket.connect(Socket.java:452)
     at java.net.Socket.connect(Socket.java:402)
     at java.net.Socket.<init>(Socket.java:309)
     at java.net.Socket.<init>(Socket.java:124)
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:562)
     ... 5 more
Exception in thread "main"
[b] Why does java system throws exception at invoke time not connection time at lookup time</b]
Any suggestion...
Regards,
Manoj

> Are you getting this from a lookup()? If so it means the Registry you are looking for at rmi://x.x.x.x:5578 is not present.
I am getting it at the time when I invoke the method validate on the object returned from lookup.
--Manoj

Java.rmi.ConnectException: Connection refused to host: 10.41.8.140; nested exception is:

Agile:9.2.2.1
linux-x86_64

What is the Port in which you are ruinning the RMI?
You need to mention the port.
Simply chek if you have proper connectivity to the Server and the RMI Service as the speicifed port, try the debugging commands from command prompt like:
D:>telnet <Server IP Address> <Port Number>
If this command clears the windows into a blank window as if waiting for you input then it means that you have access to the Server and the RMI service is running on the machine.
If not, it is either NOT accessible or RMI Service is not working.
Thanks and regards,
Pazhanikanthan. P

What does java.rmi.ConnectException: Connection refused to host mean? ¶

Several users have run into a java.rmi.ConnectException message during deployment, and need some information on how to troubleshoot this. We'll be adding this to our documentation, but thought it might be useful now.
In NoSQL DB R2.0, the show plan -id <id> command displays plan status and any errors that may have occurred. If you see this exception listed in the error section, it means that the Admin service was unable to reach one of the NoSQL DB components while the system was trying to execute an administrative command.
The first step is check on the overall status of the store. One way to do that is to use the show topology command, followed by the verify command. The show topology command will display the layout of the store, while verify will check the status of each component. A component that can't be reached will display a status of UNREACHABLE.
In general, NoSQL DB attempts to make any troubleshooting information you need available through the Admin CLI, through commands like show plan, show events, show faults. A ConnectException message means that a communication channel either was not established, or failed, and in those cases, troubleshooting information may not have been conveyed to the Admin service. This is particularly true if there was a communication failure during initial deployment of a component.
The next step would be to look in the NoSQL log files for more detailed error information. Look first in the aggregated storewide log, which can be found in the node that is hosting the master admin service, under the KVROOT/<storename>/logs/<storename>*.log. You can locate the master Admin through the "verify" command. This log file contains information from all the different components in the store.
Suppose Replication Node rg1-rn3, on Storage Node sn3, is not responsive. Look through the <storename>.log for entries made by those components. Each log entry is prefixed with the name of the component that issued the log message. Sometimes the aggregated storewide log has too much information, or sometimes information from a component was not transmitted to the Admin, and therefore isn't included in the aggregated log. In that case, it can be more helpful to look at the Replication Node or Storage Node logs directly, which can be found on their host, in the <KVROOT>/<storename>/logs directory.
If the problem occurs during an initial deployment, it can be particularly helpful to review the Storage Node logs to make sure that the Storage Node Agent on that node was created correctly, and that the process came up as expected, according to the installation directions, and the Replication Node logs. Some of the common reasons why a Replication Node might not come up are that here is inadequate heap and memory on the node, or that a initial configuration parameter is misspelled or has an invalid value, or that the time skew between components is greater than NoSQL's acceptable limit.

Several users have run into a java.rmi.ConnectException message during deployment, and need some information on how to troubleshoot this. We'll be adding this to our documentation, but thought it might be useful now.
In NoSQL DB R2.0, the show plan -id <id> command displays plan status and any errors that may have occurred. If you see this exception listed in the error section, it means that the Admin service was unable to reach one of the NoSQL DB components while the system was trying to execute an administrative command.
The first step is check on the overall status of the store. One way to do that is to use the show topology command, followed by the verify command. The show topology command will display the layout of the store, while verify will check the status of each component. A component that can't be reached will display a status of UNREACHABLE.
In general, NoSQL DB attempts to make any troubleshooting information you need available through the Admin CLI, through commands like show plan, show events, show faults. A ConnectException message means that a communication channel either was not established, or failed, and in those cases, troubleshooting information may not have been conveyed to the Admin service. This is particularly true if there was a communication failure during initial deployment of a component.
The next step would be to look in the NoSQL log files for more detailed error information. Look first in the aggregated storewide log, which can be found in the node that is hosting the master admin service, under the KVROOT/<storename>/logs/<storename>*.log. You can locate the master Admin through the "verify" command. This log file contains information from all the different components in the store.
Suppose Replication Node rg1-rn3, on Storage Node sn3, is not responsive. Look through the <storename>.log for entries made by those components. Each log entry is prefixed with the name of the component that issued the log message. Sometimes the aggregated storewide log has too much information, or sometimes information from a component was not transmitted to the Admin, and therefore isn't included in the aggregated log. In that case, it can be more helpful to look at the Replication Node or Storage Node logs directly, which can be found on their host, in the <KVROOT>/<storename>/logs directory.
If the problem occurs during an initial deployment, it can be particularly helpful to review the Storage Node logs to make sure that the Storage Node Agent on that node was created correctly, and that the process came up as expected, according to the installation directions, and the Replication Node logs. Some of the common reasons why a Replication Node might not come up are that here is inadequate heap and memory on the node, or that a initial configuration parameter is misspelled or has an invalid value, or that the time skew between components is greater than NoSQL's acceptable limit.

Connection refused to host: connection timed out

I have been struggling with this problem a couple of days now so I really hope someone can help me. I am trying to get rmi to work in a NAT environment. We use a firewall, so I have opened port 1099 and 2020 which I use as a fixed port for communication (just to be sure it is not a firewall thing); I use the following code:
//server
public class ComputeEngine extends UnicastRemoteObject
implements Compute
public ComputeEngine() throws RemoteException {
super();
public String getMessage() {
return "you have successfully connected to the server";
public static void main(String[] args) {
if (System.getSecurityManager() == null) {
System.setSecurityManager(new RMISecurityManager());
try {
String port = args[0];
try {
RMISocketFactory.setSocketFactory(new FixedPortRMISocketFactory(Integer.parseInt(port)));
} catch (IOException e) {
e.printStackTrace();
LocateRegistry.createRegistry( 1099 );
catch (RemoteException e1) {
e1.printStackTrace();
String name = "rmi://localhost/Compute";
try {
Compute engine = new ComputeEngine();
Naming.rebind(name, engine);
System.out.println("ComputeEngine bound");
while(true); //stay alive
} catch (Exception e) {
System.err.println("ComputeEngine exception: " + e.getMessage());
e.printStackTrace();
public Socket createSocket(String host, int port)
throws IOException {
System.out.println("creating socket to host : " + host + " on port " + port);
return new Socket(host, port);
* Create a server socket on the specified port (port 0 indicates
* an anonymous port) and writes out some debugging info
* @param port the port number
* @return the server socket on the specified port
* @exception IOException if an I/O error occurs during server socket
* creation
* @since JDK1.1
public ServerSocket createServerSocket(int port)
throws IOException {
port = (port == 0 ? portnumber : port);
System.out.println("creating ServerSocket on port " + port);
return new ServerSocket(port);
//client
public class ComputePi {
public static void main(String args[]) {
if (System.getSecurityManager() == null) {
System.setSecurityManager(new RMISecurityManager());
try {
String name = "rmi://" + args[0] + "/Compute";
Compute comp = (Compute) Naming.lookup(name);
System.out.println("connected to server");
System.out.println(comp.getMessage());
} catch (Exception e) {
System.err.println("ComputePi exception: " + e.getMessage());
e.printStackTrace();
I start the client with:
java -Djava.security.policy=policy.all -jar client.jar 194.2.4.6:1099
I start the server with:
java -Djava.rmi.server.codebase="file:/C:\RMI\\server.jar" -Djava.rmi.server.hostname="194.2.4.6" -Djava.security.policy=policy.all -jar server.jar 2020
As you can see I set the "-Djava.rmi.server.hostname" property which should be a solution to the NAT problem. However I keep getting the following exception!!??!!:
ComputePi exception: Connection refused to host: 194.2.4.6; nested exception is:
     java.net.ConnectException: Connection timed out: connect
java.rmi.ConnectException: Connection refused to host: 194.2.4.6; nested exception is:
     java.net.ConnectException: Connection timed out: connect
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
     at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
     at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
     at sun.rmi.server.UnicastRef.newCall(Unknown Source)
     at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
     at java.rmi.Naming.lookup(Unknown Source)
     at client.ComputePi.main(ComputePi.java:14)
Caused by: java.net.ConnectException: Connection timed out: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source)
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source)
     ... 7 more
Can anyone help me with this, please??????
kind regards,
Christiaan

Yes, i can ping it from the client.
I have also noticed that when i run my server with the option -Djava.rmi.server.hostname=IP the applications stops automatically after a few minuts...
I'm not using nothing about codebase. I have the stub and skel classes in server and client machines..
I add the complete exception:
Client exception: java.rmi.ConnectException: Connection refused to host: external_IP; nested exception is:
java.net.ConnectException: Connection timed out: connect
java.rmi.ConnectException: Connection refused to host: external_IP; nested exception is:
java.net.ConnectException: Connection timed out: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:567)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:101)
at example.hello.Server_Stub.sayHello(Unknown Source)
at example.hello.Client.main(Client.java:55)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
at java.net.Socket.connect(Socket.java:426)
at java.net.Socket.connect(Socket.java:376)
at java.net.Socket.<init>(Socket.java:291)
at java.net.Socket.<init>(Socket.java:119)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirect
SocketFactory.java:22)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMaster
SocketFactory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:562)
... 5 more

Javax.mail.MessagingException: Connection refused: connect on localhost

Hello,
I am using Tomcat5.0.28 for a javamail servlet program. I am giving the hostname as localhost. After entering the input details in my html file, i get the error- "javax.mail.MessagingException: Connection refused: connect; nested exception is: java.net.ConnectException: Connection refused: connect " .
can anybody help me regarding in solving error.
Thanks.

First, you're using a very old version of JavaMail. Please upgrade. Some of the properties you're setting aren't supported in that old version.
Second, you don't need the socket factory properties, get rid of them.
Finally, it looks like you're trying to connect on port 143 using SSL. Port 143 is the non-SSL port. That's probably not going to work. Still, it looks like something is refusing to let you connect at all. If you really can telnet from the same machine your program is running on to the same server machine on port 143, then you probably have some sort of firewall that's preventing your program from connecting. Please post the entire debug output if it still fails after correcting the problems above. (Move the setDebug call to before the getStore call.)

Tcp/ip bconnection to host has failed,connection refused

Exception in thread "main" com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host has failed. java.net.ConnectException: Connection refused: connect at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(Unknown Source) at com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(Unknown Source) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(Unknown Source) at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(UnknownSource)
Can anyone pls help me out .
I ve tried netstat -an port 1433 is not listed
firewall is diasbled .

You need to enable TCP services on SQL Server.

Java.sql.SQLException: Network error IOException: Connection refused:

hi...i am tryin to connect to sqlserver2000 ....i wanted a dsnless connection...i have downloaded jtds driver...set the classpath..no joy..i'm connecting to sqlserver's default port 1433..i also confirmed that sqlserver tcp is enabled...still gettin the same err:
java.sql.SQLException: Network error IOException: Connection refused: connect
at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java
:385)
at net.sourceforge.jtds.jdbc.ConnectionJDBC3.<init>(ConnectionJDBC3.java
:50)
at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:182)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at SQLServerConnect.getConnection(SQLServerConnect.java:27)
at SQLServerConnect.displayDbProperties(SQLServerConnect.java:44)
at SQLServerConnect.main(SQLServerConnect.java:80)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:364)
at java.net.Socket.connect(Socket.java:507)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at net.sourceforge.jtds.jdbc.SharedSocket.createSocketForJDBC3(SharedSoc
ket.java:304)
at net.sourceforge.jtds.jdbc.SharedSocket.<init>(SharedSocket.java:255)
at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java
:310)
... 7 more
Error Trace in getConnection() : Network error IOException: Connection refused:
connect
Error: No active Connection
i even tried connecting to the port 1433 thru telnet...err:Could not open connection to the host, on port 1433:connection failed...
i thought it cud b a firewall issue...disabled my windows firewall..no joy..
can ne body help me with this....need to solve this desparately
thanks in advance
jude

Old, but still coming up in google searches. Here's the solution that worked for me:
Dynamic Port Allocation explained:
http://support.microsoft.com/kb/823938
How to: Configure a Server to Listen on a Specific TCP Port (SQL Server Configuration Manager)
http://support.microsoft.com/kb/823938
In case that dissappears:
To assign a TCP/IP port number to the SQL Server Database Engine
1. In SQL Server Configuration Manager, in the console pane, expand SQL Server 2005 Network Configuration, expand Protocols for <instance name>, and then double-click TCP/IP.
2. In the TCP/IP Properties dialog box, on the IP Addresses tab, several IP addresses appear, in the format IP1, IP2, up to IPAll. One of these are for the IP address of the loopback adapter, 127.0.0.1. Additional IP addresses appear for each IP Address on the computer. Right-click each address, and then click Properties to identify the IP address that you wish to configure.
3. If the TCP Dynamic Ports dialog box contains 0, indicating the Database Engine is listening on dynamic ports, delete the 0.
4. In the IPn Properties area box, in the TCP Port box, type the port number you wish this IP address to listen on, and then click OK.
5. In the console pane, click SQL Server 2005 Services.
6. In the details pane, right-click SQL Server (<instance name>) and then click restart, to stop and restart SQL Server.

Url connection refused to site

Hi,
I was using a program to connect to a website to pull down data and store in a file. Now I'm getting the following error:
java.net.ConnectException: Connection refused: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at sun.net.NetworkClient.doConnect(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.openServer(Unknown Source)
     at sun.net.www.http.HttpClient.<init>(Unknown Source)
     at sun.net.www.http.HttpClient.<init>(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.http.HttpClient.New(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at pcxtrade.URLAccess.<init>(URLAccess.java:23)
     at pcxtrade.URLAccess.main(URLAccess.java:50)
After working for a while I'm getting blocked. How can I go around it? Thank you very much

It would appear that either a) you have the wrong IP address and/or port of b) the server is explicitly disallowing your connection.
1) Find out the IP address and port.
2) Put a logging statement in right before your call to the API's connect method that spells out what URL you're connecting to.
3) Look again at the error message and see if it provides any more detail about the server/port than what you've provided here.
If the above tell you that you've got the wrong address/port, then put the right one in. If they tell you that you've got the right one, then see if you can connect via telnet or web browser. If the other connection method also fails, then you need to talk to the owner of the site, or your company's firewall admins or somebody. If the other methods let you get through, then it's your code, and you'll have to post the code here to get help debugging it.

MSSQL's JDBC random connection refused

I am having a random "unable to connect" error from my java application. Sometimes it's fine, apps running without any problem, but sometimes this exception comes up. I am writing this app at home and my SQL server is at office (behind a router with SPI firewall, but i have port forwarded TCP port 1433 for the connection). If I telnet to SQL server, i wont get any error message but a blank screen, it looks like the server side is waiting for my console input.
IDE: NetBeans IDE 6.0 (Build 200711261600)
JavaSDK: 1.6.0 build 1.6.0_03-b05
MSSQL JDBC Driver: should be latest (i downloaded off from MS website in early March)
MSSQL: MS SQL 2005 Developer Edition
com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host has failed. java.net.ConnectException: Connection refused: connect
any help would be appreciated
Jimmyson

this is a sample of my JDBC code:
    private boolean isOnline()
        Connection myConnection = null;
        String myServerPath =      "jdbc:sqlserver://" + dbAddress + ":" + dbPort + ";" +
                    "databaseName=" + dbDefaultDB + ";user=" + dbUsername +
                    ";password=" + dbPassword;
        try
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            myConnection = DriverManager.getConnection(myServerPath);
            myConnection.close();
            return true;
        catch (Exception e)
            e.printStackTrace();
            return false;
    }Sorry if my code is bad
Edited by: istudio on Mar 27, 2008 6:23 AM for formatting issue

ConnectException: Connection refused (No firewall)

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