RE: [flexcoders] #2031: Socket Error

[Seth Hodgson]

When you hit a 2031 error, to troubleshoot further I'd recommend running 
Wireshark (formerly, Ethereal) to capture the TCP packets sent/received when 
you run your test.

Seth

From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
edward.syrett
Sent: Friday, June 27, 2008 1:47 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] #2031: Socket Error

I'm trying to send a simple string to a Printer Server on our network.    The 
text is a language called ZPL which is going to our little print server box 
that has a Zebra Label printer on its parallel port.

Here's my test app:


<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml"; 
layout="absolute">
    
    <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
            
            
            private function onPrintZpl():void 
            {
     &nbs! p;          var sData:String = "^XA^FWR^CI13" +
                    "^LH<LabelTop>,<LabelLeft>" +
                    "^FWB^FO512,899^XGPPI_LAN,1,1^FS^FWR" +
                    "^FO708,045^A0,40,40^FDUnit 7^FS" +
                    "^FO659,042^A0,40,40^FDKuehne + Nagel Logistics^FS" +
                    "^FO611,042^A0,40,40^FDAppletree Road^FS" +
                    "^FO562,042^A0,40,40^F! DChipping Warden^FS" +
      &! nbsp; &n bsp;           "^FO522,042^A0,40,40^FDBanbury^FS" +
                    "^FO476,042^A0,40,40^FDOxfordshire^FS" +
                    "^FO430,043^A0,40,40^FDOX17 1LL^FS" +
                    "^FO381,042^A0,40,40^FDUnited Kingdom^FS" +
                    "^BY3,3,10" +
                    "^FO141,043^B3R,N,100,Y,N^FD9999999999999^FS" +
                    "^XZ"
     &! nbsp;          
                try
                {
                    var socket:Socket = new Socket();
                    
                    //socket.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
                    
                    socket.connect("10.44.180.120", 9100);
                    socket.writeUTF(sData);            &n! bsp;&nbs p;      
socket.flush();
                    
                    socket.close();
                }
                catch(error:Error)
                {
                    Alert.show(error.message);
                }
            }
            
            private function onIOError(event:IOErrorEvent):void            {
            }
            
        ]]>
    </mx:Script>
    
    <mx:VBox width="100%" label="Printing">
        <mx:Button label="ZPL Print" click="onPrintZpl()"/>
    </mx:VBox>
        
</mx:WindowedApplication>

With the app as it stands, I can hit the "ZPL Print" button, the label is 
printed, but then the app throws this error:

[SWF] SocketTest.swf - 902,761 bytes after decompression
Error #2044: Unhandled IOErrorEvent:. text=Error #2031: Socket Error.
    at SocketTest/onPrintZpl()[C:\Development\Monarch\Test\SocketT! 
est\src\SocketTest.mxml:28]
    at! SocketT 
est/___SocketTest_Button1_click()[C:\Development\Monarch\Test\SocketTest\src\SocketTest.mxml:58]

If I uncomment the call to addEventListener() for IOErrorEvent.IO_ERROR, the 
app runs without any errors, but the label isn't printed.

Any comments/help gratefully received.

Thanks,

Ed.