Problem download big files after deploy

[Manuel]

Hi there,

In my silverlight application I need download some files with more than 50 MB.

I create a webService to do that, here are the code that call the webService:

                BasicHttpBinding bind = new BasicHttpBinding();
                EndpointAddress endpoint = new EndpointAddress("../WebServ/webServiceSGA.asmx");

                bind.MaxBufferSize = 2147483647;
                bind.MaxReceivedMessageSize = 2147483647;

client.downloadDocumentoReuniaoCompleted += new EventHandler<servicoWebSGA.downloadDocumentoReuniaoCompletedEventArgs>(client_downloadDocumentoReuniaoCompleted);

client.downloadDocumentoReuniaoAsync(AppGlobais.Globais.reuniaoGlobal.IdProp.ToString(),
    DocumentoReuniaoSeleccionado.UrlFicheiroProp, (int)DocumentoReuniaoSeleccionado.VersaoDocumentoProp,         AppGlobais.Globais.configuracaCaminhoDocumentos.CaminhoDocumentos);

And here are the code of webService:


[WebMethod]
        public byte[] downloadDocumentoReuniao(string reuniaoID, string nomeFicheiro, int versaoDocumento,string caminho)
        {
            string ficheiroPath;
            string erro = "";
            StringBuilder sb = new StringBuilder();


            erro = "INICIO: ";
            sb.Append(erro);

            try
            {
                string caminhoPastaReunioes = caminho;
                string caminhoFicheiro = caminhoPastaReunioes + "reuniao_" + reuniaoID + "\\documentosReuniao\\";
                string caminhoFicheiroComVersao = caminhoFicheiro + Util.DevolveNomeFicheiroComVersao(nomeFicheiro, versaoDocumento, 2);

                if (File.Exists(caminhoFicheiroComVersao))
                {
                    byte[] dmp = LeFicheiro(caminhoFicheiroComVersao);

                    erro = "tamanho: " + dmp.Length.ToString();
                    sb.Append(erro);

                    using (StreamWriter outfile = new StreamWriter(Util.DevolvePathRaizAplicacao() + "\\Reunioes\\Log_downloadFicheiroWS.txt"))
                    {

                        outfile.WriteLine(sb.ToString());
                        outfile.Close();
                    }

                    return dmp;
                }
                else
                {
                    erro = "Erro a ler ficheiro";
                    sb.Append(erro);

                    using (StreamWriter outfile = new StreamWriter(Util.DevolvePathRaizAplicacao() + "\\Reunioes\\Log_downloadFicheiroWS.txt"))
                    {

                        outfile.WriteLine(sb.ToString());
                        outfile.Close();
                    }

                    return null;
                }
            }
            catch (Exception Erro)
            {

                erro = "CATCH: " + Erro.Message;
                sb.Append(erro);

                using (StreamWriter outfile = new StreamWriter(Util.DevolvePathRaizAplicacao() + "\\Reunioes\\Log_downloadFicheiroWSCatch.txt"))
                {

                    outfile.WriteLine(sb.ToString());
                    outfile.Close();
                }

                throw Erro;




                return null;
            }


            
        }

And here are the callBack method that will receive the byte[] from webService:

 void client_downloadDocumentoReuniaoCompleted(object sender, servicoWebSGA.downloadDocumentoReuniaoCompletedEventArgs e)
        {
            try
            {
         
                if (e.Result != null)
                {
                    MessageBox.Show("Audio completo\n" + e.Result.Length.ToString());
                    try
                    {
                        Stream audio = new MemoryStream(e.Result);
                        MediaEl.SetSource(audio);
                        this.MediaEl.Play();

                    }
                    catch (Exception ex)
                    { MessageBox.Show("Ocorreu um erro com o ficheiro de áudio."); }
                    
                }
                else
                {
                    MessageBox.Show("Não foi possível fazer download do ficheiro de áudio.");
                }

 }
            catch(Exception ex)
            {
                MessageBox.Show("Ocorreu um erro no callback do método descarregarGravacao\n" + ex.Message + "\n" + ex.StackTrace);
            }
        }

And the problem occures here, in this catch with this message:

an exception occurred during the operation, making the result invalid.  Check InnerException for exception details.

ErrorCallStack:
   at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()

To check what occure in server side, I create a simple log file, to see if the webService can open and read the file, and yes. No problem in server side, however, when goes to callBack give me that error.

I tried search about it with no luck. I read that maybe server has a restriction of response size I don´t know...

Here are my web.config:

<system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="WebBehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="ReportServiceBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
        <behavior name="SGA.Web.Service.DownloadFileBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    
    
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"
      multipleSiteBindingsEnabled="true" />

    <services>
      <service behaviorConfiguration="ReportServiceBehavior" name="Telerik.Reporting.Service.ReportService">
        <endpoint address="" binding="basicHttpBinding" contract="Telerik.Reporting.Service.IReportService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="resources" behaviorConfiguration="WebBehavior"
          binding="webHttpBinding" contract="Telerik.Reporting.Service.IResourceService"/>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />

      </service>

Another thing, this problem only happen after deploy the application. If I try download in localhost works fine, but if I deploy in other machine -- ERROR.

Can you give me some clue about it?

Thanks in advance,

[Manuel]

Hi,

Apparently I solve the problem, I add transfereMode to:

bind.TransferMode = TransferMode.StreamedResponse;

Now I can download, but is a little bit small.

Thanks,