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POAdd a thread to handle only 1 socket per time
 

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  1. POAdd a thread to handle only 1 socket per time
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    <p>How can i add a Thread in that code to allow only 1 connection per Time... and when it finish .close(); open again to wait another? i tryed a lot of others things, like WHILE, if, and others variables, but failed to block the .accept(); while a connection is open ;/, and i dont know how to make it one threaded</p> <pre><code>import java.awt.Desktop; import java.io.*; import java.lang.reflect.Array; import java.net.*; import java.util.ArrayList; import javax.swing.JOptionPane; import javax.swing.JTextField; public class Provider { ServerSocket providerSocket; Socket connection = null; ObjectOutputStream out; String ocupado = "0"; ObjectInputStream in; String caminhodoarquivo; Provider(){} void run() { try{ providerSocket = new ServerSocket(2004, 1); System.out.println("---------------Aguardando por certidões----------------"); connection = providerSocket.accept(); out = new ObjectOutputStream(this.connection.getOutputStream()); out.flush(); sendMessage(ocupado); in = new ObjectInputStream(connection.getInputStream()); System.out.println("Certidão de: " + connection.getInetAddress().getHostName()); String ocupado = "1"; try{ caminhodoarquivo = (String)in.readObject(); System.out.println("Certidão: " + caminhodoarquivo); JTextField paginainicial = new JTextField(); JTextField paginafinal = new JTextField(); Object[] message = { "Número da Primeira Folha: ", paginainicial, "Número Última Folha: ", paginafinal, }; int option = JOptionPane.showConfirmDialog(null, message, "Dados da Certidão", JOptionPane.OK_CANCEL_OPTION); ocupado = "1"; if (option == JOptionPane.OK_OPTION) { String primeirafolha = paginainicial.getText(); String ultimafolha = paginafinal.getText(); metodos metodosBD = new metodos(); metodosBD.atualizafolha(primeirafolha, ultimafolha, caminhodoarquivo); System.out.println("Dados inseridos."); Desktop.getDesktop().print(new File(caminhodoarquivo)); ocupado = "0"; } else { System.out.println("Certidão Cancelada."); } } catch(ClassNotFoundException classnot){ System.err.println("Data received in unknown format"); out.close(); in.close(); providerSocket.close(); } } catch(IOException ioException){ ioException.printStackTrace(); } finally{ //4: Closing connection try{ in.close(); out.close(); providerSocket.close(); } catch(IOException ioException){ ioException.printStackTrace(); } } } void sendMessage(String msg) { try{ out.writeObject(msg); out.flush(); } catch(IOException ioException){ ioException.printStackTrace(); } } public static void main(String args[]) { Provider server = new Provider(); while(true){ server.run(); } } } </code></pre> <blockquote> <p>Edit for the answer of user2511414</p> </blockquote> <p>1) Server is running ok and recieve perfectly the first connection and finish it when i close the confirmdialog, and i can open another perfectly = OK</p> <p>2) When i connect client1, maintain the confirmdialog open, and try connect the second client i recive this error in CLIENT2:</p> <pre><code>java.net.SocketException: Software caused connection abort: recv failed at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(Unknown Source) at java.net.SocketInputStream.read(Unknown Source) at java.io.ObjectInputStream$PeekInputStream.read(Unknown Source) at java.io.ObjectInputStream$PeekInputStream.readFully(Unknown Source) at java.io.ObjectInputStream$BlockDataInputStream.readShort(Unknown Sour ce) at java.io.ObjectInputStream.readStreamHeader(Unknown Source) at java.io.ObjectInputStream.&lt;init&gt;(Unknown Source) at certidoesOrganizado.PrimeiroPDF$Requester.run(PrimeiroPDF.java:151) at certidoesOrganizado.PrimeiroPDF.enviacaminho(PrimeiroPDF.java:132) at certidoesOrganizado.PrimeiroPDF.geracertidao(PrimeiroPDF.java:466) at certidoesOrganizado.PrimeiroPDF.pegadados(PrimeiroPDF.java:302) at certidoesOrganizado.gui$6.actionPerformed(gui.java:204) </code></pre> <p>and in the server i recive this one:</p> <pre><code>java.net.SocketException: Socket is closed at java.net.Socket.getOutputStream(Unknown Source) at Provider.run(Provider.java:21) at java.lang.Thread.run(Unknown Source) Exception in thread "Thread-4" java.lang.NullPointerException at Provider.run(Provider.java:59) at java.lang.Thread.run(Unknown Source) </code></pre> <p>and the Client2 doesnt recive a "Server is busy message"</p> <p>3) While the client1 ConfirmDialog is still open and after the fail of Client2 i try the CLIENT3, it connect succefully and i end with 2 Joption.ShowConfirmDialog opened... :(</p> <p>and everything start again, im using this in CLIENT's to do the connection:</p> <p>in a method to call the connection: </p> <pre><code>Requester client = new Requester(); client.run(); </code></pre> <p>Class Requester:</p> <pre><code>} class Requester{ Socket requestSock et; ObjectOutputStream out; ObjectInputStream in; String message; Requester(){} void run() { try{ requestSocket = new Socket("localhost", 2004); System.out.println("Tentando Conexão"); out = new ObjectOutputStream(requestSocket.getOutputStream()); out.flush(); System.out.println("out.flush"); in = new ObjectInputStream(requestSocket.getInputStream()); try { message = (String)in.readObject(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } do{ message = "oi"; sendMessage(arquivonomecompleto); }while(message.equals("bye")); } catch(UnknownHostException unknownHost){ System.err.println("You are trying to connect to an unknown host!"); } catch(IOException ioException){ ioException.printStackTrace(); } finally{ //4: Closing connection try{ in.close(); out.close(); requestSocket.close(); } catch(IOException ioException){ ioException.printStackTrace(); } } } void sendMessage(String msg) { try{ out.writeObject(msg); out.flush(); //System.out.println("client&gt;" + msg); } catch(IOException ioException){ ioException.printStackTrace(); } } } </code></pre>
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