c# - 将 C# 服务引用与代理一起使用

Question

我正在尝试在 C# 项目中使用 ServiceReference。该项目旨在测试连接。我有一位客户正在尝试将 C# 应用程序连接到我一位同事的一项 Web 服务。无法建立连接，他认为这是我们自己的错误。

我正在尝试编写一个简单的 C# 项目。故事讲够了……现在需要信息了。

1. 客户使用代理服务器
2. 出于测试原因，我尝试连接到此 Web 服务 http://www.w3schools.com/webservices/tempconvert.asmx
3. 我使用 .Net Framework 4.0
4. 我的项目编译成 Windows 窗体应用程序。

这里是我的方法的源代码:

    private void button2_Click(object sender, EventArgs e)
    {
        try
        {
            //Create Client
            ServiceReference1.TempConvertSoapClient client = new ServiceReference1.TempConvertSoapClient(@"TempConvertSoap",@"http://www.w3schools.com/webservices/tempconvert.asmx");
            if (client.ClientCredentials != null)
            {
                //Use Values which are typed in in the GUI
                string user = tbUser.Text;
                string password = tbPassword.Text;
                string domain = tbDomain.Text;

                //Check what information is used by the customer.
                if (!string.IsNullOrEmpty(user) && !string.IsNullOrEmpty(password) && !string.IsNullOrEmpty(domain))
                {
                    client.ClientCredentials.Windows.ClientCredential = new NetworkCredential(user, password, domain);
                }
                if (!string.IsNullOrEmpty(user) && !string.IsNullOrEmpty(password))
                {
                    client.ClientCredentials.Windows.ClientCredential = new NetworkCredential(user, password);
                }
            }
            //Oh nooo... no temperature typed in
            if (string.IsNullOrEmpty(tbFahrenheit.Text))
            {
                //GOOD BYE
                return;
            }
            //Use the webservice 
            string celsius =  client.FahrenheitToCelsius(tbFahrenheit.Text); //<-- Simple Calculation
            tbCelsius.Text = celsius;
        }
        catch(Exception ex) 
        {
            //Something 
            MessageBox.Show(ex.ToString());
        }

    }

这是我的问题:我如何设置此服务引用或客户端的代理？没有用于此目的的属性或 setter 。我用 ClientCredentials 试过了

Answer 1

好吧，我自己找到了答案。希望它能对某人有所帮助 ;)。

这部分创建一个绑定(bind)。这可以稍后在网络服务中使用

    private void button2_Click(object sender, EventArgs e)
    {
        BasicHttpBinding binding = new BasicHttpBinding("TempConvertSoap");

        if (!string.IsNullOrEmpty(tbProxy.Text))
        {
            binding.Security.Mode = BasicHttpSecurityMode.TransportCredentialOnly;
            binding.Security.Transport.ProxyCredentialType = HttpProxyCredentialType.Basic;


            string proxy = string.Format("http://{0}", tbProxy.Text);
            if (!string.IsNullOrEmpty(tbPort.Text)) 
            {
               proxy = string.Format("{0}:{1}",proxy,tbPort.Text);
            }

            binding.UseDefaultWebProxy = false;
            binding.ProxyAddress = new Uri(proxy);


        }
        EndpointAddress endpoint = new EndpointAddress(@"http://www.w3schools.com/webservices/tempconvert.asmx");

这里开始我设置绑定(bind)的旧部分。

            try
        {
            //Create Client
            ServiceReference1.TempConvertSoapClient client = new ServiceReference1.TempConvertSoapClient(binding, endpoint);
            if (client.ClientCredentials != null)
            {
                //Use Values which are typed in in the GUI
                string user = tbUser.Text;
                string password = tbPassword.Text;
                string domain = tbDomain.Text;



                client.ClientCredentials.UserName.UserName = user;
                client.ClientCredentials.UserName.Password = password;
                client.ClientCredentials.Windows.ClientCredential.Domain = domain;

                //Check what information is used by the customer.
                if (!string.IsNullOrEmpty(user) && !string.IsNullOrEmpty(password) && !string.IsNullOrEmpty(domain))
                {
                    client.ClientCredentials.Windows.ClientCredential = new NetworkCredential(user, password, domain);
                }
                if (!string.IsNullOrEmpty(user) && !string.IsNullOrEmpty(password))
                {
                    client.ClientCredentials.Windows.ClientCredential = new NetworkCredential(user, password);
                }
            }
            //Oh nooo... no temperature typed in
            if (string.IsNullOrEmpty(tbFahrenheit.Text))
            {
                //GOOD BYE
                return;
            }
            //Use the webservice 

            //THIS ONE IS IMPORTANT
            System.Net.ServicePointManager.Expect100Continue = false;
            string celsius =  client.FahrenheitToCelsius(tbFahrenheit.Text); //<-- Simple Calculation
            tbCelsius.Text = celsius;
        }
        catch(Exception ex) 
        {
            //Something 
            tbCelsius.Text = ex.Message;
            MessageBox.Show(ex.ToString());
        }

    }

我使用 Squid 作为我的代理，并在代理之外使用了防火墙。成功配置后，我遇到了错误 (417) Expectation failed。在研究过程中，我发现了一行代码帮助我“解决”了这个问题

System.Net.ServicePointManager.Expect100Continue = false;