Hi,I'm writing a server <-> client application and I have a problem while sending Objects.Generally, everything is fine as far as I don't want to send object back and forth. My problem by example:- Server creates an object for instance myObject = new MyObject();- Server puts an this ...

Hi,I am using a client socket to send messages to a commercial application. The client socket is initialized and the connection to the server established at the startup of the client application (keep alive and tcp no delay are set to true). In case of loss of connection I have added an ...

I have a server client app using SE Java.There are 6 types of clients that connect to the server using a socket.As it is now i just use 1 server socket to spin off a thread each time any client arrives.like so:import java.net.ServerSocket;import java.io.IOException;public final class ...

is there any body who guide me how can i establish a socket or any type of communication bridge through a phone line for sending data between to computer ?sample code may help me more than anything...

im new in java programming i dont understand how the virtual machine work & what the benefit of using it for this reason is the java work platform independently

I get this error when i try to read text from the server, My code is as followspackage VChat;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStream;import ...

I have a SOCKS ver4 proxy server and an application that runs on SOCKS ver 4 (Yahoo Messenger). I want to create an application that will serve as a transit between the 2. Meaning, I will be creating an API that will listen to the SOCKS application and forward the data to the SOCKS server.The ...

Hi,I am trying to find whether a server is running on the remote machine on a specified port. When the remote server is unreachable, the DatagramSocket.connect(InetAddress, int) always returns without even throwing exception. Even the method DatagramSocket.isConnected also returns true. ...

i have a textbox with button, if i execute a button it has to start the backend console program and if i submit the some data through textbox that console programhas to read that data and save it.how will do this..help me plz..thx

Hi all!I have a strange problem using sockets in SJSAS (version 9.0_01).I've deployed a servlet which uses sockets to check some ports on remote hosts (a sort of scanning).I've set my socket connection timeout, but timeout exception is never thrown.Sockets seem to be "hung up" in SJSAS.With ...

hello everyone,i have just started to implement a client-server paradigm for a secure communication channel... do you know of very good starting point of socket programming with java? a url or a book? i am looking for something that will guide me through the process of a simple client-server to ...

I've been using the below code since Java1.1 for downloading files from a http-server. But with Java6 it has stopped working. Or rather it downloads less bytes than the file actually is.Ex. when loading a file that is actually 28.043 bytes, it consistently only loads 28.011 bytes.connection is ...

Hi Gurus,I have requirement of when the client clicks on download link in browser then i had send the file from server to client. Can any body ve a code for this please send me.Thanks in advanceRavi

I have a client swing application that is reading from the socket InputStream in its own thread. This is a blocking read, via a BufferedReader.readLine() call.When someone presses a button or some other event is to trigger a socket write, would you suspect some sort of dead lock or non ...

Hi Experts,I am new to socket programming. I want to develop voice chat client application.Now i have few queries if it is solved it will help me great to develop my application. I am final year student of MCA please i have to complete this application in very short time Early reply help me ...

I am reading the documentation and it says the ServerSocket(12345) would bind to 12345 port. So does this mean any other application won't be able to use this port?I am trying to build a class which can hold on to a port and when required release it. The reason is that some other application ...

I want the connection between two client such that messages between two client are pass directly,without passing through serverWill it possible if yes then please tell me the procedure for doing that thank you for replies

Hi allIf I send the following command to RFID reader through TCP/IP.byte[] buf = { 0x01, 0x04, 0x06, 0x22, (byte)0xA0, 0x69, 0x72 };It returns the response packet as a byte stream including CRC, MSB and LSB . Besically i am not able to interpret the response packet so that I can ...

my server side program:import java.io.*;import java.net.*;import java.util.*;public class simpleserver{ArrayList clientoutputstream;public class clienthandler implements Runnable{BufferedReader reader;Socket sock;public clienthandler(Socket clientsocket){try{sock=clientsocket;InputStreamReader ...

hi friends, I am making a chatting messenger using socket programming in java,I have some problem in establishing chatting session between two clients,where server just provide socket address of the c2 to c1,and then two client connect to each other and then send message without passing that ...

I am trying to create a simple chat client (like yahoo mssg)import java.io.*;import java.net.*;import java.awt.*;import java.awt.event.*;import javax.swing.*;public class chat1 {JTextField text;PrintWriter write1;JTextAreatext1;BufferedReader read1;Socket sock; public static void main(String[] ...

I am final year student. I am making project on instant messenger,I am using Socket programming .I want from my application that when client1 want to chat with any of the online client2,he send that name of the client2 to the server then server send his socket address to the client1,& then ...

hello. i'm developing a messenger program. initial design had one client sending a message and the server echoing the message back to the client. it worked fine. now i'm making it for multiple clients. that is one client sending a message and multiple clients receiving the message like in ...

I'm new to HTTPS and SSL implementation, so my question may seem very basic to you all.I'm trying to read from an HTTPS url. I can successfully read a standard HTTP url. I've read a lot of the posts, but I can't seem to get a handle on how to do this. We are not concerned about verifying ...

Hello,I have been programming in Java for a while but today is my first shot at NIO.I'm implementing a custom protocol over TCP between a java server and several Java and C clients. The classical one-thread-per-client approach works with a couple of test connections, but I'm afraid it will ...

HiI have a servlet which does some calculation on address.This calculation had a SAX parser inside it.I want to present this servlet as a service.I called this servlet using URLConnection.During my testing i created a runnable class, which actually calls the servlet using the URLConnection from ...

Hi everyone,I have a server somewhere in the internet that listens on a certain port. This server is available only through dynamically changing IP addresses therefore the server updates its IP address to a dynamic DNS provider at a regular interval.I also have a client that connects to this ...

Hi,Don't you know, how is it possible, that when a TCP client running on PPC connects to server running on PC over ActiveSync, there are no packets captured by the Wireshark running also on this PC? I tried to listen on all of possible interfaces, but always with the same result. Thank ...

Hi, I am trying to connect to the echo port of my own system. The code I am using is provided here under. When I am executing this I am getting an IOException.I am running this on Windows XP machine...I belive this code is working fine when I exectuted on a windows 98 machine..Pls. suggest if I ...

i want toconnect to telnet using java, can anyone tell me how to do that

Hello, My name is Fabio, i live in Brazil.I need that two or more conect the ane server socket.Who can help me ?

Hello,Trying to write a network manager kind of program where the client initiates a number of connections to different servers. Need to manage these connections through the life time of the session ( time the client is connected to the server). The client connections originate from a single ...

HelloI have developed an application that opens a SSLSocket to connect to a remote server. It works on windows but not on Linux machines.Running the application on Linux machines (RH 7.3, RHEL4.3 and CentOS), I find the following exception when executing ...

i'm making a messenger client which has 4 classes.ClientSocketsSendReceivea thread t1 in client in binded to object of send. the run inside send will send messages using a PrintWriter object 'out' of sockect object soc which are delcared an inidialised in sockets. i have created an object of ...

I would like to know how to write a program to communicate with another program located at another server in different location. Just call it Program A and B.Program A and B must able to talk to each other, which it can send and receive a simple string. Is it possible to do this by using the ...

Hi,I am having a problem sending the following string over a stream from server to client.strUserName = "QTQ";param = "hi";Send the following: (""+CHAT2ALL+strUserName+(char)(220)+param); which when written or sent or recieved should be "104QTQ躧i" But when i send it the client recieves it as : ...

How would I make a client keep listening for a certain action..Basically I have created a Client-Server Chat app... on connection and disconnection the server creates a userlist using the vectorlist, thus keeps updating on connection/disconnection of a socket/user.... so serverside is ...

Ok so I am writing this small FTP applet so I can upload files to my website. All is going well except when I upload a large file, it uploads then as soon as its done uploading it disappears. I have no idea why. If the file is above about 3/4 a meg then it just disappears when its done ...

Hello,Scenario:I have one PLC (Programmable Logic Controller) that is a client.I wrote the server code, it works.PLCClient <->PLCServer( 1 to 1 )Now I have to implements my clients on PCs.The PCClient sends commands to PLCServer and it answers back.How can I do this kind of connection?I ...

Hi, I am using the following code to make connection with the server. The speciality of this server is that it has the code of peer.java.net.socket sock = new Socket(ip1,port1) ; Then i use this socket to make streams and do the following.1) Created a class which will handle all the operations ...

We are using Talarian Smart Socket. We are also using JDk 1.4 for our application. Since we migrated to JDK 1.6 there is change in the message format.. I guess it has to do with the binary conversion or bytes conversion. Do I need to upgrade Talarian Smart Socket verison for JDk 1.6

Do we have a way to configure windowing parameters for TCP from a Java program?I mean it is not for a specific Java networking application but for local low-level TCP client behavior in general.

Hi. I'm an engineering student and i'm working on my project titled 'Internet Access Control' for our college. Our college has a server connected to our network lab where internet is accessed. I'm using sockets programming and i would be glad if you tell me which classes i have to use ...

In server side programing like a Chat server whats the role played by the socket programming can any one tell me or give me the link where i can get the material

My server class is completed. When I run it...It gives me an error message java.net.BindException: Address already in use: JVM_BindI am having a localhost:81 ...I haven't assign any port 81 ...neither in router nor the IIS ...May I know what should I do to remove this message ...

Hi guys, I have a pretty simple webserver, just 3 classes, very simple, but now I need to add HTTP 1.1 keep alive feature. I have two problems, 1) I'm not completely sure I understand the keep alive feature 2) I have no idea how to impliment it with my current code.From my understanding HTTP ...

hi there, i have a problem with regards to socket programming.. im done with the client server thing in which the client communicates with the server and ther server response with a hard coded message in my program. now my problem is, how can i make a program like this:Client:Enter file to ...

Hi,I have an issue with a client/server app where the Server is running under 1.4.2_04 on Solaris 9 using NIO and in this case the Client is connecting in from a Windows XP machine using standard Sockets.If I bring up a selection of clients, I can see the connections in the ESTABLISHED state ...

How do I execute method on server from client?For example, when I start Client it gets message from server to choose option 1- send file, 2-disconect.When I choose 1, server sends the file?

Hello,I am writing a WebServer Class and would like browser to be my client...I am wander how I pass in the " http://xxx.xxx:80/~hello" to the server ...?Just don't really understand ...This is what I am writting now ...int port = 80;ServerSocket listener = new ServerSocket(port,1);Socket ...