hexadecimal value 0x1F, is an invalid character. Line 1, position 1

Question

I am getting some odd inconsistent results. This web method was working fine earlier. I had only added some UI stuff (jquery-ui and twitter-bootstrap). I tried removing all that UI stuff, but I still get this error. I'm not sure if there is something wrong with the JIRA server or if I'm not creating my requests correctly.

I've tried doing the following (based on this):

use System.Web.HttpUtility.HtmlDecode
textVar = textVar.Replace((char)(0x1F), ' ').Trim();

However, neither have worked.

This code doesn't throw an exception, but he var response in the C# code has this error stack trace. Output:

RestSharp response status: Error -
 HTTP response: Forbidden -
 Forbidden -
 '', hexadecimal value 0x1F, is an invalid character. Line 1, position 1. -
 System.Xml.XmlException: '', hexadecimal value 0x1F, is an invalid character. Line 1, position 1.
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
   at System.Xml.XmlTextReaderImpl.ThrowInvalidChar(Char[] data, Int32 length, Int32 invCharPos)
   at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.Linq.XDocument.Load(XmlReader reader, LoadOptions options)
   at System.Xml.Linq.XDocument.Parse(String text, LoadOptions options)
   at System.Xml.Linq.XDocument.Parse(String text)
   at RestSharp.Deserializers.XmlDeserializer.Deserialize[T](IRestResponse response)
   at RestSharp.RestClient.Deserialize[T](IRestRequest request, IRestResponse raw) -

The empty quote '' is actually some other character that looks similar to: [US]. Is there something I can do to fix this or does this seem to be a JIRA sever issue?

My minimized example:

private static string serverUrl = "https://www.url.com/jira";
private static string baseUrl = "/rest/api/2/";
private static string searchCommand = "search";

public static void QuickTest()
{
    string username = HttpContext.Current.Session["jira_username"].ToString();
    string pw = HttpContext.Current.Session["jira_password"].ToString();

    //also tried hardcoding these values. didn't work either
    //username = "";
    //pw = "";

    //create client     
    RestClient client = new RestClient(serverUrl)
    {
        Authenticator = new HttpBasicAuthenticator(username, pw)
    };
    //create query
    string jql = "assignee=msalim";
    //string jql = "assignee%3Dmsalim"; //didn't work either

    //create request
    var request = new RestRequest();
    request.Resource = Path.Combine(baseUrl, searchCommand);
    request.AddParameter(new RestSharp.Parameter()
    {
        Name = "jql",
        Value = jql,
        Type = ParameterType.GetOrPost
    });

    request.Method = Method.GET;

    //get response
    var response = client.Execute<Issues>(request);
    string errorMessage = string.Format("RestSharp response status: {0} -\n HTTP response: {1} -\n {2} -\n {3} -\n {4} -\n ", response.ResponseStatus, response.StatusCode, response.StatusDescription, response.ErrorMessage, response.ErrorException);
    System.Diagnostics.Debug.WriteLine(errorMessage);
}

Also, I've tried entering both of these in my Firefox browser and they return the expected results:

https://www.url.com/jira/rest/api/2/search?jql=assignee%3Dmsalim

https://www.url.com/jira/rest/api/2/search?jql=assignee=msalim

You need to see actual response to figure out what is going wrong - i.e. use Fiddler to capture... Note that you should be able to do that from command line app too and don't need any JavaScript in your post (you may also simplify C# sample to use constant Url). — Alexei Levenkov, Apr 16 '15 at 19:13
@AlexeiLevenkov I've simplified the code. Did you mean to check the response's request after executing? — But I'm Not A Wrapper Class, Apr 16 '15 at 19:48
Instead of deserializing directly to an `Issues` object, have you tried `client.Execute(request)` to see the raw content? Or is that where you did the replace earlier? — pilotcam, Apr 16 '15 at 20:15
@pilotcam That just gives me the same error with less info. The `Content` is always an unreadable string. — But I'm Not A Wrapper Class, Apr 16 '15 at 20:43
Incidentally, wouldn't you want to use Url.Combine instead of Path.Combine? Is it possible your request path is invalid? — pilotcam, Apr 16 '15 at 20:49
@CyberneticTwerkGuruOrc - yes, service response. I assume you've managed to run request manually and see response (probably HTML with "come again another day" sort of text), but if you could not - setting process' proxy to Fiddler localhost:8888 would let you capture most complicated request/response pairs. — Alexei Levenkov, Apr 16 '15 at 21:35

score 0 · Accepted Answer · edited May 23 '17 at 12:30

0

This solution led me to the problem. I tried a coworker's login and password for JIRA and it worked perfectly. The server under serverUrl had banned me from logging in again because I had made so many requests. Now I have to communicate with server admin to figure this out. Another thing to note is that each request I made counted as a "failed login" according to JIRA.

edited May 23 '17 at 12:30

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answered Apr 16 '15 at 21:17

But I'm Not A Wrapper Class

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hexadecimal value 0x1F, is an invalid character. Line 1, position 1

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