web service

[fdefod]

olá pessoal,

Estou desenvolvendo um aplicativo que compara arquivo de duas maquinas(Local e remota). Na máquina remota eu rodo uma web service que gera um hash do arquivo e me retorna uma string. na local eu tb gero um hash e comparo com o que foi retornado da maq. remota.

O prblema é que a quantida de arquivos é muito grande. e quando eu coloco pra rodar dá o seguinte erro:

An existing connection was forcibly closed by the remote host

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Aguem sabe dizer como resolver isso??

Codigo que chama webservice!

for (int i = 0; i < array.Count; i++)  //20.000 arquivos +-
                {
                       WebReference.Service obj = new WebReference.Service();
                   
                    row = dtSample.NewRow();
                    string arquivo = array[i].ToString();
                    string lisboa= HttpUtility.UrlDecode(obj.DownloadFile(arquivo));
                    obj.Dispose();
                    if (txtExtensao.Text.Equals(String.Empty))
                    {
                        //    if (arquivo[arquivo.Length - 4].Equals('.') )
                        //       row["TIPO"] = arquivo.Substring(arquivo.LastIndexOf(".") + 1);
                        //   else
                        //        row["TIPO"] = "pasta";

                        for (int j = 0; j < intelig.Count; j++)
                        {
                            if (arquivo.Equals(intelig[j].ToString())&&Comparar(arquivo,lisboa)==true)
                            {
                                if (rblStatus.Items[1].Selected || rblStatus.Items[2].Selected)
                                {
                                    row["ARQUIVO EM LISBOA"] = array[i].ToString();
                                    row["INTELIG"] = "ok";
                                    dtSample.Rows.Add(row);
                                }
                                break;
                            }
                            else if (j == intelig.Count - 1)
                            {
                                if (rblStatus.Items[0].Selected || rblStatus.Items[2].Selected)
                                {
                                    row["ARQUIVO EM LISBOA"] = array[i].ToString();
                                    row["INTELIG"] = "falha";
                                    dtSample.Rows.Add(row);
                                }
                            }

                        }
                    }