Sharepoint List webservice error on CheckoutFile method with SSL

Question

Howdy,

I am trying to checkout a file from a SharePoint document library before downloading to my client application for edit.

//documentPath = https://192.168.1.10/Utility/Phys/Document%20Library/document.xml
//listWebServiceURL = https://192.168.1.10/Utility/Phys/Document%20Library/_vti_bin/lists.asmx
private void CheckOutFile(string documentPath)
{
    string listWebServiceUrl = this.GetListServiceURL(documentPath);
    bool checkedOut;

    using (Lists listWebService = new Lists())
    {
        listWebService.Credentials = CredentialCache.DefaultCredentials;
        listWebService.Url = listWebServiceUrl;
        checkedOut = listWebService.CheckOutFile(documentPath, "true", string.Empty);
    }
}

When the checkedOut = listWebService.CheckOutFile(documentPath, "true", string.Empty); line runs I get a SOAPServerException.

((System.Xml.XmlElement)((System.Web.Services.Protocols.SoapException)(ex)).Detail).InnerText Object reference not set to an instance of an object.

Any help on this would be appreciated.

Thank you,
Keith

EDIT: I have tested the above code against a SharePoint library that does not use SSL and it seems to work fine.

Answer 1

I believe you have to provide a time value in the last argument in listWebService.CheckOutFile. It may be complaining about the string.Empty. Try putting in a string like; "12 May 2009 22:00:00 GMT"

Answer 2

OK. Do you have an example of the document path that is being passed into the method?

Curious to see Relative or absolute url, file extension etc.

Answer 3

Maybe this is an alternate access mapping problem (The "Object Not Set" error is a telltale sign)? You've got one for https://192.168.1.10/ in Central Administration->Operations->Global Configuration->Alternate Access Mappings, ya?