Databases
StackOverflow2013
Postsdbo
POJava socket giving premature end of stream
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POJava socket giving premature end of stream
    primarykey
    data
    text
    <p>I'm setting up a comet server that connects to a XMPP server. Here's how it goes down:</p> <p>A client connects with the comet server and, among other things, a socket connection is opened:</p> <pre><code>try { radio = new Socket("server", 5222); out = new PrintWriter(radio.getOutputStream(), true); in = new BufferedReader(new InputStreamReader(radio.getInputStream())); } catch (UnknownHostException e) { System.out.println("Unknown host: "+e); error = e.toString(); } catch(IOException e) { System.out.println("IO error: "+e); error = e.toString(); } </code></pre> <p>Next, a thread is started, which waits for data from the socket:</p> <pre><code>public void run() { System.out.println("Thread started."); String data; String error; Client remote; Client client; while(!done) { data = this.output(); remote = bayeux.getClient(remoteId); client = bayeux.getClient(clientId); if(data!=null) { Map&lt;String, Object&gt; packet = new HashMap&lt;String, Object&gt;(); packet.put("xml", data); remote.deliver(client, "/radio/from", packet, null); } error = this.error(); if(error!=null) { Map&lt;String, Object&gt; packet = new HashMap&lt;String, Object&gt;(); packet.put("details", error); remote.deliver(client, "/radio/error", packet, null); } /* try { Thread.sleep(500); } catch (InterruptedException e ) { System.out.println("Interrupted!"); } */ } try { in.close(); out.close(); radio.close(); } catch(IOException e) { System.out.println("Error disconnecting: "+e); error = e.toString(); } System.out.println("Thread stopped."); } public String output() { try { String data = in.readLine(); System.out.println("From: "+data); if(data==null) { System.out.println("End of stream!"); try { Thread.currentThread().sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } //error = "End of stream."; //this.disconnect(); } return data; } catch (IOException e) { error = e.toString(); System.out.println("IO error! "+e); } return null; } </code></pre> <p>Any input received from the client is forwarded to the XMPP server:</p> <pre><code> public void input(String xml) { System.out.println("To: "+xml); out.println(xml); } </code></pre> <p>So here's where the problem come in. The client opens the connection and sends the proper XML to the XMPP server to start a stream. <code>in.readLine();</code> hangs, as it should, until a response is received from the server. As soon as it is received, <code>in.readLine();</code> begins to return null, over and over again. This shouldn't happen; it should hang until it receives data. It seems unlikely that the server has closed out on me, it hasn't sent the <code>&lt;/stream:stream&gt;</code> to signal the end of an XMPP stream. Any ideas on what could be the problem?</p> <p>Thank you for your help!</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USTheron Luhn
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POJava socket giving premature end of stream
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POJava socket giving premature end of stream
      1. USSergey Tachenov
      1. VTFavorite
    1. COYou say it's unlikely that the server closes the connection, but just to be safe, did you really check what radio.isConnected() returns after readLine() returns null?
      singulars
      1. POJava socket giving premature end of stream
      1. USSergey Tachenov
    2. COIt's too bad you didn't just use BOSH (http://xmpp.org/extensions/xep-0206.html), or you could have used something off-the-shelf for either the client, the server, or both.
      singulars
      1. POJava socket giving premature end of stream
      1. USJoe Hildebrand
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload