Thread: Sync with Sage Pastel

When executing the below code I am getting errors:

C#/VB.NET Code:

public void CallEvent(string runtimeParams)
        {
            try
            {
                Customer ThisCustomer = ((AspDotNetStorefrontPrincipal)HttpContext.Current.User).ThisCustomer;
 
                if (this.CalloutURL.Trim() != "" && this.Active)
                {
                    String str = AppLogic.RunXmlPackage(this.m_XmlPackage, null, ThisCustomer, 1, "", runtimeParams, false, false);
                    byte[] data = Encoding.UTF8.GetBytes(str);
 
                    HttpWebRequest webRequest = (HttpWebRequest)System.Net.WebRequest.Create(this.m_CalloutURL); //Webrequest must be fully qualified to avoid compile warnings in VB
                    webRequest.Credentials = CredentialCache.DefaultCredentials;
                    webRequest.Method = "POST";
                    webRequest.ContentLength = data.Length;
                    webRequest.ContentType = "application/x-www-form-urlencoded";
 
 
                    // For Async Call
                    // Create the state object.
                    ManualResetEvent WaitHndle = new ManualResetEvent(false);
                    RequestState rs = new RequestState(WaitHndle, this.Debug);
 
 
                    // Put the request into the state object so it can be passed around.
                    rs.Request = webRequest;
                    rs.DataToSend = data;
 
                    webRequest.BeginGetRequestStream(new AsyncCallback(ReadCallbackRequest), rs);
 
 
                    // Issue the async request
                    IAsyncResult r = (IAsyncResult)webRequest.BeginGetResponse(new AsyncCallback(AspdnsfEventHandler.RespCallback), rs);
 
                    ThreadPool.RegisterWaitForSingleObject(r.AsyncWaitHandle, new WaitOrTimerCallback(AspdnsfEventHandler.ScanTimeoutCallback), rs, (30 * 1000), true); //30 sec timeout
 
                    allDone.WaitOne();
                    rs.ResponseStream.Close();
 
                }
            }
            catch (WebException ex) { string str = ex.ToString(); }
            catch (Exception ex) { string sr = ex.ToString(); }
        } 


The errors I am getting are as follows:

You must write ContentLength bytes to the request stream before calling [Begin]GetResponse.

Can anybody help

just to add some detail:

the code mentioned in this thread is part of the aspdotnetstorefront wsi automation system. When setting the wsi to execute when checkout complete no action occurs and the web site that is suppose to receive the call is not recieving anything.

When i debugged the system i noticed that in the line :

IAsyncResult r = (IAsyncResult)webRequest.BeginGetResponse(new AsyncCallback(AspdnsfEventHandler.RespCallback), rs);

an error is being raised and the call is not being made.

I installed the whole aspdotnetstorefront and also wsi as per user manual and also enabled the settings in the web.config file. When i call the ipx.asmx of gthe web site no errors are raised and this means that all is working fine, but still no calls to my site are being raised.

Pls help.

Kenneth

The code displayed here is the standard code of aspdotnetstorefront for the call event. I used the source code of aspdotnetstorefront to see why no calls are being made to the external website.

I have re-installed all the system step by step as described in the manual and also enabled the wsi as per manual. Still no calls being made to my external website. I am currently using the latest version of aspdotnetstorefront as downloaded from your website.

Is it possible to obtained a detailed installation procedure on how to install aspdotnetstorefront and enable wsi events.

I know that this thread is almost one year old but I just run into exactly similar problem using 8.0.1.4 ML.

The callback used to work just fine while the site was on .Net 3.5. But when we switched to .Net 4.0 callback has started failing with "You must write ContentLength bytes to the request stream before calling [Begin]GetResponse." error.

Everything else seems to be working just.

Did anyone else experience similar issue?

UPDATE:
I've fixed the problem by adding <httpRuntime requestValidationMode="2.0" /> to the site (.Net 4.0 based) that receives callbacks from store.

Originally Posted by scode

I know that this thread is almost one year old but I just run into exactly similar problem using 8.0.1.4 ML.

The callback used to work just fine while the site was on .Net 3.5. But when we switched to .Net 4.0 callback has started failing with "You must write ContentLength bytes to the request stream before calling [Begin]GetResponse." error.

Everything else seems to be working just.

Did anyone else experience similar issue?

I believe that there are two separate problems, one each at the sending and receiving ends. First, if you run the store under .net 4.0 then you get the You must write ContentLength bytes to the request stream before calling [Begin]GetResponse." error because BeginGetResponse is being called before ReadCallbackRequest completes. This can be fixed if you have source code by moving the call to BeginGetResponse into ReadCallbackRequest. Refer to http://msdn.microsoft.com/en-us/libr...(v=VS.90).aspx, the obvious source of this code. Refer to http://www.developerfusion.com/code/...ttpwebrequest/ for some insight into the use of RegisterWaitForSingleObject. With this suggested fix you should use the AsyncWaitHandle from the IAsyncResult returned by BeginGetRequestStream in the call to RegisterWaitForSingleObject. I am also mystified by the use of two separate ManualResetEvent's, allDone and WaitHndle. Since the response from the event listener is ignored except for debugging, I think that it would be a "good idea" to (optionally) run the transaction in a separate thread to completely eliminate the customer experiencing the delays of the web round trip. Will probably give that a try.

Is there an established policy about posting substantial chunks of source?

The ValidationMode issue is at the Listener end.