pblm in establishing communication bt applet and its server over internet

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prabhu - 24 Mar 2006 14:57 GMT

HI ,
I am Prabhakaran. I am having pblm in establishing communication
bt applet and its server over internet. I am using socket programming
for client server communication. I am using apache tomcat 4.0 for
serving those applet classes. I am running Java server program in the
same machine. Whenever i am testing applet /server communication in LAN
it is working fine But in the internet ,the connection is not
established bt applet and server.

Friends,plz reply me soon. I am giving a public IP to my
Server host & also I am opening all ports in server. Applet is
downloaded in clinet host whenever the page is requested but connection
is not established....

Plz help me ..Reply soon

Ur's friendly,
Prbhu...

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Roedy Green - 24 Mar 2006 19:51 GMT

> Whenever i am testing applet /server communication in LAN
>it is working fine But in the internet ,the connection is not
>established bt applet and server.

The usual problem is the security sandbox is getting in the way. It
thinks you are trying to talk to a server other than the one you were
loaded from. To start, are you sure they are the same IP?

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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prabhu - 25 Mar 2006 06:12 GMT

HI Roedy,
Thanks for reply. Ya server to which applet has to talk and the
server from where it is loaded are the same host(IP) .

Then what may be the problem.

Reply to this Message

Roedy Green - 25 Mar 2006 08:27 GMT

>HI Roedy,
> Thanks for reply. Ya server to which applet has to talk and the
>server from where it is loaded are the same host(IP) .
>
> Then what may be the problem.

what is the error message/exception?

Show some code.

Do you know about the "downstream" problem? See
http://mindprod.com/jgloss/applet.html
and search for "downstream"
.

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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prabhu - 25 Mar 2006 12:46 GMT

Hi,
I am getting "No host to route" exceception in the client
side.
I did a simple socket program

Client side
Socket client=new Socket("IP",9999);

Server side

ServerSocket ss=new ServerSocket(9999);
Socket s=ss.accept();
System.out.println("Connection Accepted");

This is my coding . I am not getting "Connection accepted " in the
server side. But all applet files are downloaded in the client browser.

I am catching the exception in the client side and
displaying it in one text box. It is displaying as
"java.net.NoRouteToHostException: No route to host: connect."

Reply to this Message

Roedy Green - 25 Mar 2006 23:32 GMT

> Socket client=new Socket("IP",9999);
>
>Server side
>
> ServerSocket ss=new ServerSocket(9999);

check your firewalls on both ends that they will let though that
socket.

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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pblm in establishing communication bt applet and its server over internet

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