Hi, I have written an application and few month ago I got this error message : com.google.gwt.user.client.rpc.StatusCodeException: 0 At last I found an explanation (for my case which might not worth for yours but can give you ideas maybe).
I am developing my app on my laptop. So at home I have a network connection (I use wireless connection). Then I suspend my laptop (that has at this time an ip address and a network environment). When I am at my customer site, I then resume my laptop. No wireless network and not cable network available for people from outside but I didn't disable my previous network configuration. Then I try to connect to my app with my browser. So the browser is doing a call on a local machine with http://localhost:8080/blabla. And there this message is raised ! After it happened a few times, I tried the following : disable wireless on my laptop. Then the network configuration is changed. I just have a 127.0.0.1. And then I don't have anymore the error message. Are your users on laptops or desktops ? Are they connected with cable or wireless ? I don't know if this can match your case or not but may be the problem is really related to their network connection (may be lan). Hope this can give you some ideas to find out what your problem is. Boris Le 30 mars 2012 06:29, John Malpas <jmal...@calflora.org> a écrit : > I have several apps out there written in GWT 2.4 > Over the last few months, users have started to complain > about seemingly random RPC failures, both reading and writing. > I have never yet experienced these errors from my own computer, > but there are enough users writing in about it that > it seems that there must be something going wrong -- not just > one user with a questionable internet connection. > > The manifestation in the onFailure() method of an AsyncCallback > is usually > com.google.gwt.user.client.rpc.StatusCodeException: 0 > > I found one cooperative user who has been willing to beat on the > apps for me and send me results.He gets the errors with Firefox 8, IE 8, > and Chrome.When the RPC calls work, I see custom log messages in > the tomcat log. When the calls do not work, I see no evidence of any > activity > in either the tomcat log or the apache log, so it appears that the RPC > calls are not reaching the server. > > This morning I changed one of the apps to include a symbol table, > and to print out a stack trace in a dialog when the failure happens, and > then > asked my precious user to try it. He sent back this stack trace, > copied from the dialog: > > fail to write > CAUGHT com.google.gwt.user.client.rpc.StatusCodeException: 0 > 0 : Unknown.Em(StackTraceCreator.java:168) > 1 : Unknown.Jl(StackTraceCreator.java:421) > 2 : Unknown.RF(StatusCodeException.java:35) > 3 : Unknown.bH(RequestCallbackAdapter.java:209) > 4 : Unknown.bs(Request.java:287) > 5 : Unknown.Bs(RequestBuilder.java:395) > 6 : Unknown.anonymous(XMLHttpRequest.java:287) > 7 : Unknown._l(Impl.java:168) > 8 : Unknown.cm(Impl.java:213) > 9 : Unknown.anonymous(Impl.java:57) > > In broad strokes, I understand that the exception is > thrown because the browser is unable to do an XMLHttpRequest. > But more than that, why? I have looked up the line references > in the 2.4 source modules mentioned in the stack trace above, > but am still at a loss. The last one is this: > > public final native void setOnReadyStateChange(ReadyStateChangeHandler > handler) /*-{ > // The 'this' context is always supposed to point to the xhr object in > the > // onreadystatechange handler, but we reference it via closure to be > extra sure. > var _this = this; > this.onreadystatechange = $entry(function() { > 287: handl...@com.google.gwt.xhr.client.ReadyStateChangeHandler > ::onReadyStateChange(Lcom/google/gwt/xhr/client/XMLHttpRequest;)(_this); > }); > }-*/; > > Any suggestions would be greatly appreciated. > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-web-toolkit/-/2TVvDKQzwkkJ. > To post to this group, send email to google-web-toolkit@googlegroups.com. > To unsubscribe from this group, send email to > google-web-toolkit+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
