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Não foi possível criar um canal seguro para SSL/TLS, erro ocorre na segunda vez que chamo o webservice RRS feed

  • Pergunta

  • Estou tendo este problema na segunda vez que chamo o webservice.

    Sempre na primeira vez funciona, porém na segunda não...

    Alguem poderia me ajudar?

    o erro ocorre nessa linha:

     var teste = tipoInstance.GetMethod(methodName).Invoke(wsvcClass, args);


    Segue o codigo:

    ConnectionLib.WsProxy opa = new ConnectionLib.WsProxy();
                opa.CallWebService("https://urldoservico"
                    , "NfseServicesService" //nome do servico
                    , "EnviarLoteRpsSincrono" //nome do metodo
                    , new object[]{ File.ReadAllText(@"arquivo.xml") }
                    , new X509Certificate2(@"C:\Projetos\Branch\Framework\NFE\Certificado\certificado.pfx", "senhadocertificado"));


    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Reflection;
    using System.CodeDom;
    using System.CodeDom.Compiler;
    using System.Security.Permissions;
    using System.Web.Services.Description;
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    using System.Net.Security;
    
    namespace ConnectionLib
    {
        class BressamWebClient : WebClient
        {
            public bool CertificateValidation(object sender,
                X509Certificate certificate,
                X509Chain chain,
                SslPolicyErrors sslPolicyErros)
            {
                return true;
            }
    
            X509Certificate Certificado;
            public BressamWebClient(X509Certificate Certificado)
            {
                this.Certificado = Certificado;
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CertificateValidation);
            }
            protected override WebRequest GetWebRequest(Uri address)
            {
                var request = base.GetWebRequest(address);
                (request as HttpWebRequest).ClientCertificates.Add(this.Certificado);
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CertificateValidation);
    
                return request;
            }
        }
        public class WsProxy
        {
            public bool CertificateValidation(object sender,
                X509Certificate certificate,
                X509Chain chain,
                SslPolicyErrors sslPolicyErros)
            {
                return true;
            }
    
            [SecurityPermissionAttribute(SecurityAction.Demand, Unrestricted = true)]
            public object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args, X509Certificate certificado)
            {
                using (BressamWebClient client = new BressamWebClient(certificado))
                {
                    // Connect To the web service
                    using (System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl"))
                    {
                        // Now read the WSDL file describing a service.
                        ServiceDescription description = ServiceDescription.Read(stream);
                        ///// LOAD THE DOM /////////
                        // Initialize a service description importer.
                        ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
                        ServiceDescriptionImporter importer = new ServiceDescriptionImporter();
                        //importer.ProtocolName = "Soap"; // Use SOAP 1.2.
                        importer.AddServiceDescription(description, string.Empty, string.Empty);
                        // Generate a proxy client.
                        importer.Style = ServiceDescriptionImportStyle.Client;
                        // Generate properties to represent primitive values.
                        importer.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties;
                        // Initialize a Code-DOM tree into which we will import the service.
                        CodeNamespace nmspace = new CodeNamespace();
                        CodeCompileUnit unit1 = new CodeCompileUnit();
                        unit1.Namespaces.Add(nmspace);
                        // Import the service into the Code-DOM tree. This creates proxy code that uses the service.
                        ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit1);
                        if (warning == 0) // If zero then we are good to go
                        {
                            // Generate the proxy code
                            using (CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp"))
                            {
                                // Compile the assembly proxy with the appropriate references
                                string[] assemblyReferences = new string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" };
                                CompilerParameters parms = new CompilerParameters(assemblyReferences);
                                parms.GenerateExecutable = false;
                                parms.GenerateInMemory = true;
                                parms.TreatWarningsAsErrors = false;
                                parms.WarningLevel = 4;
                                CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1);
                                // Check For Errors
                                if (results.Errors.Count > 0)
                                {
                                    foreach (CompilerError oops in results.Errors)
                                    {
                                        System.Diagnostics.Debug.WriteLine("========Compiler error============");
                                        System.Diagnostics.Debug.WriteLine(oops.ErrorText);
                                    }
                                    throw new System.Exception("Compile Error Occured calling webservice. Check Debug ouput window.");
                                }
                                // Finally, Invoke the web service method
                                object wsvcClass = results.CompiledAssembly.CreateInstance(serviceName);
    
    
                                Type tipoInstance = wsvcClass.GetType();
                                object oClientCertificates = tipoInstance.InvokeMember("ClientCertificates", System.Reflection.BindingFlags.GetProperty, null, wsvcClass, new Object[] { });
                                Type tipoClientCertificates = oClientCertificates.GetType();
                                tipoClientCertificates.InvokeMember("Add", System.Reflection.BindingFlags.InvokeMethod, null, oClientCertificates, new Object[] { certificado });
    
                                    var teste = tipoInstance.GetMethod(methodName).Invoke(wsvcClass, args);
    
                                stream.Close();
                                return teste;
                            }
                        }
                        else
                        {
                            stream.Close();
                            return null;
                        }
                    }
                }
            }
        }
    }


    System.Reflection.TargetInvocationException: Uma exceção foi acionada pelo destino de uma chamada. ---> System.Net.WebException: A solicitação foi anulada: Não foi possível criar um canal seguro para SSL/TLS.
       em System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
       em System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request)
       em System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
       em NfseServicesService.EnviarLoteRpsSincrono(String xml)
       --- Fim do rastreamento de pilha de exceções internas ---
       em System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
       em System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
       em System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
       em System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
       em ConnectionLib.WsProxy.CallWebService(String webServiceAsmxUrl, String serviceName, String methodName, Object[] args, X509Certificate certificado) na c:\Users\RaphaelN.Bressam.bressampc\Documents\Visual Studio 2013\Projects\WindowsFormsApplication1\WindowsFormsApplication1\BressamProxy.cs:linha 110



    sábado, 22 de março de 2014 21:57

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