Webservice oneway and new SPSite (myUrl)
I have a problem with the oneway web method that opens the moss site (possibly because in the oneway web method the context is null)
Can I rewrite this code to remove the referenced link exception? (without the oneway attribute I have no exception)
[SoapDocumentMethod(OneWay = true)]
[WebMethod(Description = "TestOneWay")]
public voidTestOneWay(string webUrl)
{
using (SPSite site = new SPSite(webUrl))
{
....
}
}
an exception:
[2304] Error:Object reference not set to an instance of an object.
[2304] w3wp.exe Error: 0 :
[2304StackTrace: at System.Web.Hosting.ISAPIWorkerRequestInProc.GetAdditionalServerVar(Int32 index)
[2304] at System.Web.Hosting.ISAPIWorkerRequestInProc.GetServerVariable(String name)
[2304] at System.Web.HttpRequest.AddServerVariableToCollection(String name)
[2304] at System.Web.HttpRequest.FillInServerVariablesCollection()
[2304] at System.Web.HttpServerVarsCollection.Populate()
[2304] at System.Web.HttpServerVarsCollection.Get(String name)
[2304] at System.Collections.Specialized.NameValueCollection.get_Item(String name)
[2304] at Microsoft.SharePoint.SPGlobal.CreateSPRequestAndSetIdentity(Boolean bNotGlobalAdminCode, String strUrl, Boolean bNotAddToContext, Byte[] UserToken, String userName, Boolean bIgnoreTokenTimeout, Boolean bAsAnonymous)
[2304] at Microsoft.SharePoint.SPRequestManager.GetContextRequest(SPRequestAuthenticationMode authenticationMode)
[2304] at Microsoft.SharePoint.Administration.SPFarm.get_RequestNoAuth()
[2304] at Microsoft.SharePoint.SPSite.CopyUserToken(SPUserToken userToken)
[2304] at Microsoft.SharePoint.SPSite.SPSiteConstructor(SPFarm farm, Guid applicationId, Guid contentDatabaseId, Guid siteId, SPUrlZone zone, Uri requestUri, String serverRelativeUrl, Boolean hostHeaderIsSiteName, Uri redirectUri, Pairing pairing, SPUserToken userToken)
[2304] at Microsoft.SharePoint.SPSite..ctor(SPFarm farm, Uri requestUri, Boolean contextSite, SPUserToken userToken)
[2304] at Microsoft.SharePoint.SPSite..ctor(String requestUrl)
[2304] at Reply.Moss2EAI.SPHandler.GetAllFlowConfiguration(String webUrl, String flowConList)
[2304] at Reply.Moss2EAI.EaiMossIntegration.GetMessagesFromEai(String webUrl, String listName, String applicationName)
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I found a workaround for my problem. Create a new HttpContext. Now the question is: is this the right decision or are there consequences that I am not considering?
the method I use to change the context is this:
//Call this before call new SPSite()
private static void ChangeContext(string webUrl)
{
Trace.TraceInformation("ChangeContext");
HttpContext current = HttpContext.Current;
HttpRequest request = new HttpRequest("", webUrl, "");
HttpContext.Current = new HttpContext(request, new HttpResponse(new StringWriter(CultureInfo.CurrentCulture)));
HttpContext.Current.User = current.User;
}
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The only thing I can see is that you are actually using the new HttpContext.
Ok ... duh :)
In any case, it will have consequences if you also have input and output settings. For example, if you are using WebServiceExtensions (WSE) with your own in and out filters. In this case, you have to store the data in the HttpContext (that is, in your input and output filters) and use it. Just so that you only use one httpContext instead of creating a second, and prevent any future bugs while extending your software.
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