I am trying to implement tcp socket client
http://www.xulplanet.com/tutorials/mozsdk/sockets.php
It works fine, but when i entering illegal server name/port program doesn't
raising a error like 'TCP connect timeout' or connection failed..
this code(from manual):
try {
var transportService =
Components.classes["@mozilla.org/network/socket-transport-service;1"]
.getService(Components.interfaces.nsISocketTransportService);
var transport = transportService.createTransport(null,0,host,port,null);
var outstream = transport.openOutputStream(0,0,0);
outstream.write(outputData,outputData.length);
var stream = transport.openInputStream(0,0,0);
var instream =
Components.classes["@mozilla.org/scriptableinputstream;1"]
.createInstance(Components.interfaces.nsIScriptableInputStream);
instream.init(stream);
var dataListener = {
data : "",
onStartRequest: function(request, context){},
onStopRequest: function(request, context, status){
instream.close();
outstream.close();
listener.finished(this.data);
},
onDataAvailable: function(request, context, inputStream, offset,
count){
this.data += instream.read(count);
},
};
var pump = Components.
classes["@mozilla.org/network/input-stream-pump;1"].
createInstance(Components.interfaces.nsIInputStreamPump);
pump.init(stream, -1, -1, 0, 0, false);
pump.asyncRead(dataListener,null);
} catch (ex){
return ex;
}
return null;
It doesn't catch any errorsHow can i handle a errors?
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