problem about serversocket-Collection of common programming errors
Apurv
java android sockets serversocket
I am new to android and i am trying to create a server socket . the code follows.i am getting the warning continuously . can it be fixed ? can i ignore it?03-28 15:47:34.460: W/System.err(3185): java.net.BindException: bind failed: EADDRINUSE (Address already in use)03-28 15:47:34.460: W/System.err(3185): at libcore.io.IoBridge.bind(IoBridge.java:89)03-28 15:47:34.460: W/System.err(3185): at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:150)03-28 15:47:34.460: W/System.err(3185):
MagicConch
java httpwebrequest serversocket
HttpURLConnection uc = null ; URLPath = “”; URL url = new URL(URLPath); uc = (HttpURLConnection) url.openConnection(); uc.setReadTimeout(10000); uc.connect(); FileOutputStream fos = new FileOutputStream(savePath); InputStream in = uc.getInputStream(); byte[] buffer = new byte[1024]; int Length = 0; long FinishedLenth = 0;while((Length = in.read(buffer)) > 0) {FinishedLenth = FinishedLenth + Length;fos.write(buffer, 0, Length); } uc.disconnect(); in.close(); fos.close(); This is my function co
Haris
java serversocket
Hi I have created a server socket for reading byte array from socket using getInputStream, But getInputStream.read is not exiting after endof data reaches. Below is my code.class imageReciver extends Thread {private ServerSocket serverSocket;InputStream in;public imageReciver(int port) throws IOException{serverSocket = new ServerSocket(port);}public void run(){Socket server = null;server = serverSocket.accept();in = server.getInputStream();ByteArrayOutputStream baos = new ByteArrayOutputStream
Adam me
java serversocket ioexception
How to restart ServerSocket after IOException?My server socket sometimes gets an EOFException and then stops accepting new connections. To solve this I have tried closing the old server socket and creating a new one after the exception is thrown. However even after the new server socket is created, new connections are not accepted. Can some one see why this does not work?public Server() throws IOException { try {listen(port);}catch (IOException e) {System.out.println(“Server() – IO except
user1611395
java sockets bufferedreader serversocket printwriter
I’m trying to read data from socket using threading run method:@Override public void run() {while(true){try{String o = “”;socketServer = new ServerSocket(port);System.out.println(“Waiting for connection on port “+port+”.”);Socket socket = new Socket();socket = socketServer.accept();System.out.println(“Connection got.”);BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));int c;while(( c = input.read()) != -1)o += (char)c;PrintWriter output = new PrintWriter(s
Nileema
java queue serversocket backlog
I have a Java program that creates a server socket and accepts connections from various clients. I am interested in finding out the number of connections that are in queue (waiting to be processed by the server). I have used the default constructor without specifying the backlog parameter. At runtime, is it possible to know how many connections are pending for the server? I want to implement a monitor process, which will check how full the queue is and based on that, trigger clone processes for
user979051
java multithreading sockets serversocket
I’m creating an update client via Sockets and I’m getting a Broken Pipe on the server side. The server accepts a client socket and responds to the same socket with either a message or a large byte array (~180MB). The error does not happen when testing locally (both client and server on the same machine) and it seems that it happens while sending the byte array. I’m not specifying a time out on the client socket and don’t know why it is closing before reading the full response. Its my first ti
abourg28
java sockets serversocket
My new laptop (Alienware m17x) throws a java.net.SocketException: Invalid argument: connect when I run the following basic code:Server.java:public static void main (String[] args) throws Exception {ServerSocket serverSocket = new ServerSocket (8888);Socket socket = serverSocket.accept(); }Client.java:public static void main (String[] args) throws Exception {Socket socket = new Socket (“localhost”, 8888); }Every time I run Client.java (after starting Server.java) I get this socket exception. Here
Bleeding Fingers
java ios security godaddy serversocket
All and Happy New Year. I wanted to know that I have my Java J2SE socket server which I want to be hosted on my dedicated godaddy account. I will connect my iOS socket client to it like a chat application. How can I ensure that my Java socket server is running all the time on my godaddy server like an apache server? So any of my client application can connect to it. And also, is it a good idea to write socket server and hosted it on server( I’m talking about security issue) ?
Ben Lawry
java networking serversocket
I want to create an application that can detect other instances of itself and prevent them from running. To accomplish this, I’m thinking of opening up a new ServerSocket on some application-specific port, and then relying on the exception that should be thrown if I try to bind to the same port more than once to “detect” and kill duplicate application instances. I know I could do something like write a file into the present-working-directory and “detect” it to accomplish the same sort of behav
Vivek Singh
java android sockets serversocket
i got a very unusual problem as my application works fine on emulator in which i’m using java socket programming to connect android device with server pc….but when i install my .apk file in my android mobile it gets crash…it does not connect with my server PC …. please suggest some solutions why this is happening…i’m posting my socket code here…try {socket = new Socket(InetAddress.getByName(“vivek-PC”).getHostAddress(), 8888);dataOutputStream = new DataOutputStream(socket.getOutputStre
Hristo Iliev
winapi winsock serversocket buffer-overflow
I have implemented a c++ winsock (win 32) with intention of crashing using an strcpy command. The socket itself is instantiated inside a thread. However, when I put the strcpy inside the recv loop, it does not seem to crash.I know there is nothing wrong with the compiler since writing one with just strcpy crashes, I am thinking it is related to recv since it initiates a block on the process.Here is the full code below for the sever, the crash I am trying to implement is in the form of strcpy(a,
alditis
php actionscript-3 wamp sandbox serversocket
I know this has been touched on a lot, however, despite it all, I just don’t get it. If you guys could bear with me :(So, I’ve got this Code: import flash.net.*; import fl.controls.*; import flash.events.MouseEvent; import flash.events.DataEvent; import flash.events.SecurityErrorEvent;var mySocket = new XMLSocket(); trace(Security.sandboxType) pushMsg.addEventListener(MouseEvent.CLICK, realsedButton); //mySocket.connect(“192.124.5.2”,9999); mySocket.addEventListener(Event.CONNECT, xmlsocket); my
Hieicker
java android exception serversocket
I have a implemented a server socket on my app. My application has two activities, the first is used only for show some informations to the user and to start the second one. The second activity contains the functionality of the app and the server socket. Now, i’m always receiving the error in the title of the topic using these steps: It is always generated if i do these steps: 1. Launch the application 2. Start the second activity 3. Come back to the first activity 4. Go again to the second a
Osmium USA
java sockets serversocket server-push
First off, if you helped me solve my problem with reading an undefined length HTTP response, I’d like to thank you. I took your advice and switched from HTTP responses to raw Java sockets. But I’m having a little problem with this too.The nature of a push server is to push things to the client as they are recieved (in my case the system uses a file labeled with the device id.) The problem is that with the KnockKnock example on the Java Tutorials, their code:while ((inputLine = in.readLine()) !=
Ankur Loriya
java sockets serversocket
This is the code where I connected two Socket without any ServerSocket:package primary;import java.awt.FlowLayout; import java.io.EOFException; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.net.InetAddress; import java.net.ServerSocket; import java.net.Socket; import java.net.UnknownHostException; import java.util.concurrent.*; import javax.swing.JFrame; import javax.swing.SwingUtilities;public class Client extends JFrame implements
Martijn Courteaux
java sockets client serversocket
Let’s say Java has two kind of sockets:server sockets “ServerSocket” client sockets or just “Socket”Imagine the situation of two processes:X = Client Y = ServerThe server process Y : has a “ServerSocket”, that is listening to a TCP port The client process X : sends a connection request through a “Socket” to Y.Y: Then the accept() method returns a new client type “Socket”, when it occurs, the two Sockets get “interconnected”,So: the socket in client process, is connected with the socket in the se
user2103459
java sockets networking tcp serversocket
I’m attempting to write a simple file transfer program using the Java Socket and ServerSocket libraries. I’ve used these libraries successfully once before, but in this case I seem to have a problem getting the server side to slow down long enough once the connection is made in order for the client side to make a request. The problem appears to be happening as the main method on the server side enters the second while loop, calls handleRequest(), and once in handleRequest(), throws a SocketExe
user1256477
java serversocket
I have a SSL server this is the code:public static void startServer(){System.setProperty(“javax.net.ssl.keyStore”, “keystore”);System.setProperty(“javax.net.ssl.keyStorePassword”, “pass”);SSLServerSocket server = (SSLServerSocket)null;try {SSLServerSocketFactory sslserversocketfactory = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();server = (SSLServerSocket) sslserversocketfactory.createServerSocket(4380);} catch(IOException e) {e.printStackTrace();}while(true){try {SSLSocket clie
Josh Sobel
java sockets networking serversocket
I am writing a telnet like program in java using the server socket and socket classes. This is my current code for the client program. The user types in the server name and the port they would like to connect on.static Socket getSocket() {while(true){System.out.println(“What server do you want to connect to on which port?”);String info = sc.nextLine();String host = info.split(” “)[0];int port = Integer.parseInt(info.split(” “)[1]);try {InetAddress ip = InetAddress.getByName(host);return new So
Satokaheni
java sockets jar serversocket
I wrote a simple instant messenger program and it worked perfectly fine in eclipse. I wanted to export it to a .jar and run it on multiple computers while my main computer hosted the java socketServer. The program works when running the server in a .jar but executing the client from eclipse. But when I run my client.jar it won’t connect to the server. Both parts of my code are very long. I’m operating using the socket(ipaddress, port#) using my actual IPv4 address. I’m also operating on the port
Mulder
java sockets websocket socket.io serversocket
Do you know how can I keep alive a socket connection if I do not do any actions on the socket? I just noticed that if my connection is on background and I do not operate it I get this:java.net.SocketException: Connection reset by peer: socket write errorat java.net.SocketOutputStream.socketWrite0(Native Method)at java.net.SocketOutputStream.socketWrite(Unknown Source)at java.net.SocketOutputStream.write(Unknown Source)at java.io.DataOutputStream.writeInt(Unknown Source)So, how can I control that
MagicConch
java exception stream serversocket
try{URLPath = “xxxxx”;URL url = new URL(URLPath);uc = (HttpURLConnection) url.openConnection();uc.setReadTimeout(30000);//timeout setuc.connect();// connectfos = new FileOutputStream(savePath);InputStream in = uc.getInputStream();byte[] buffer = new byte[1024];int Length = 0;long FinishedLenth = 0;while((Length = in.read(buffer)) > 0) {FinishedLenth = FinishedLenth + Length;fos.write(buffer, 0, Length);}in.close();uc.disconnect();fos.close();}This is my download code. And I have problem, when
Kevin
java port bind serversocket
This is my first question here, I’m going to try and give as much info as I can.I have a local installation of Apache 2.2 installed on my PC. I have it default to bind to port 100 (Don’t ask me why). When I run Apache, I cannot create a socket server with port of 100 because this port is already in use. What I want to do is duplicate this functionality in a Java Server I’m writing.Currently, I create a socket server like this: ServerSocket srv = new ServerSocket(100);The problem is, this doesn’t
tree-hacker
java sockets tcp buffer serversocket
I’m writing a networking program in Java. I use ServerSocket and Socket objects to send and receive messages using TCP. My program runs fine if run for a short time however if I run it for a longer time, I get the following error:java.net.SocketException: No buffer space available (maximum connections reached?): connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at jav
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