GWT RequestBuilder not working in Chrome and FireFox

[the.wizard]

Hi everyone,
I have a problem with RequestBuilder. When I run my code that using
RequestBuilder in IE 8, it's working well, but in Chrome and FireFox,
it just keep returning empty string. When I tried to debug it, the
response is "com.google.gwt.http.client.Request$1@5a7667be", and have
no headers, the code is 0. I also get an exception like this :
07:33:50.734 [ERROR] [chameleonmain] Uncaught exception escaped

com.google.gwt.dev.shell.BrowserChannel$RemoteDeathError: Remote
connection lost
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:
354)
at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
218)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
136)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
561)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
269)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:
91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
172)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:
292)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
546)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
363)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.net.SocketException: Connection reset by peer: socket
write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:
92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:
123)
at java.io.DataOutputStream.flush(DataOutputStream.java:106)
at com.google.gwt.dev.shell.BrowserChannel
$ReturnMessage.send(BrowserChannel.java:1310)
at com.google.gwt.dev.shell.BrowserChannel
$ReturnMessage.send(BrowserChannel.java:1315)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:
340)
at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
218)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
136)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
561)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
269)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:
91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
172)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:
292)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
546)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
363)
at java.lang.Thread.run(Thread.java:662)

Is there any way to solve this problem?
Here is my code :
RequestBuilder request = new RequestBuilder(RequestBuilder.GET, url);
request.setHeader("Content-Type", "text/html");
RequestCallback callback = new RequestCallback() {
@Override
public void onResponseReceived(Request request, Response response) {
String userIdentity = response.getText();
}

@Override
public void onError(Request request, Throwable exception) {
exception.printStackTrace();
}
};
request.sendRequest(null, callback);

Please anyone kindly help me to solve this problem.
Thank you.

Regards,
Willy

[Alfredo Quiroga-Villamil]

SOP violation. You seem to be sending a request crossing domains.

Look up Same Origin Policy online for more info.

Regards,

Alfredo

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