[CB-6096] WP8 Project - XHRHelper.HandleCommand failing with 'System.InvalidOperationException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.3.0
• Fix Version/s: 3.5.0
• Component/s: cordova-wp8 (DEPRECATED)
• Labels: 3.3.0 InvalidOperationException ajax cordova phonegap wp8 xhrhelper

Environment

Development Environment: Visual Studio 2012 (with Update 4), Windows 8.1 Pro x64, Target Environment: Windows Phone 8.0, Other libraries - jquery

• Assignee: Jesse MacFadyen
• Reporter: Mehmet Zahid Aydin
• Created: 24/Feb/14 14:46
• Updated: 23/Aug/18 07:19
• Resolved: 20/Mar/14 07:51

Description

I need jquery/ajax to ping SAP-Server.

I get the following exceptions:
System.InvalidOperationException occured of type "System.ni.dll"
Exception of Type System.InvalidOperationException in Microsoft.Phone.Interop.ni.dll

In these cases I received a 404 error.
Value of commandSt was changed during debugging.
commandStr: "XHRLOCAL/Http://sapfd1.flexus.net:8030/sap/public/ping?=1362547834285"
or
commandStr: "XHRLOCAL/Http://sapfd1.flexus.net:8030/sap/public/ping"

Part of JavaScript

function checkPublicPing() {
		var successful = false;
        var publicPingPath = "sap/public/ping";
        var serverURI = "http://sapfd1.flexus.net:8030";

		$.ajax({
			async : false,
			url : serverURI + publicPingPath,
			cache : false
		}).fail(function(error) {
			successful = false;
		}).done(function(data, textStatus, xhr) {
			successful = true;
		});
		return successful;
	}

Part of cordovalib/XHRHelper.cs

 public bool HandleCommand(string commandStr)
        {
//commandStr: "XHRLOCAL/Http:/sapfd1.flexus.net:8030/sap/public/ping?_=1362547834285"

            if (commandStr.IndexOf("XHRLOCAL") == 0)
            {
                string url = commandStr.Replace("XHRLOCAL/", "");
// url: {Http:/sapfd1.flexus.net:8030/sap/public/ping?_=1362547834285}

                Uri uri = new Uri(url, UriKind.RelativeOrAbsolute);
// uri: {Http:/sapfd1.flexus.net:8030/sap/public/ping?_=1362547834285}

                using (IsolatedStorageFile isoFile = IsolatedStorageFile.GetUserStoreForApplication())
                {
                    if (isoFile.FileExists(uri.AbsolutePath))
                    {
//uri.AbsolutePath: InvalidOperationException Typ "Sytem.ni.dll"

                        using (TextReader reader = new StreamReader(isoFile.OpenFile(uri.AbsolutePath, FileMode.Open, FileAccess.Read)))
                        {
                            string text = reader.ReadToEnd();
                            Browser.InvokeScript("__onXHRLocalCallback", new string[] { "200", text });
                            return true;
                        }
                    }
                }

Please advise.

Issue Links

• relates to: CB-5391 XHR failing
• relates to: CB-6299 Ajax of local files not working when requested via absolute URL