不安全的 Internet 客户端和服务
下面的插图演示了一个公共的、不安全的 Windows Communication Foundation (WCF) 客户端和服务的示例。
.gif "不安全的 Internet 客户端和服务方案")
| 特征 | 说明 |
|---|---|
安全模式 |
无 |
传输 |
HTTP |
绑定 |
在代码中使用 BasicHttpBinding，或在配置中使用 <basicHttpBinding>元素。 |
互操作性 |
与现有的 Web 服务客户端和服务进行互操作 |
身份验证 |
None |
完整性 |
None |
保密性 |
None |
服务
下面的代码和配置将独立运行。执行下列操作之一：
使用代码（而不使用配置）创建独立服务。
使用提供的配置创建服务，但不定义任何终结点。
代码
下面的代码演示如何创建不安全的终结点。默认情况下，BasicHttpBinding 将安全模式设置为 None。
Dim httpUri As New Uri("https://localhost/Calculator")
' Create the ServiceHost.
Dim myServiceHost As New ServiceHost(GetType(Calculator), httpUri)
' Create a binding that uses HTTP. By default,
' this binding has no security.
Dim b As New BasicHttpBinding()
' Add an endpoint to the service.
myServiceHost.AddServiceEndpoint(GetType(ICalculator), b, "")
' Open the service and wait for calls.
AddMexEndpoint(myServiceHost)
myServiceHost.Open()
Console.Write("Listening....")
Console.ReadLine()
' Close the service when a key is pressed.
myServiceHost.Close()
Uri httpUri = new Uri("https://localhost/Calculator");
// Create the ServiceHost.
ServiceHost myServiceHost = new ServiceHost(typeof(Calculator), httpUri);
// Create a binding that uses HTTP. By default,
// this binding has no security.
BasicHttpBinding b = new BasicHttpBinding();
// Add an endpoint to the service.
myServiceHost.AddServiceEndpoint(typeof(ICalculator), b, "");
// Open the service and wait for calls.
AddMexEndpoint(ref myServiceHost);
myServiceHost.Open();
Console.Write("Listening....");
Console.ReadLine();
// Close the service when a key is pressed.
myServiceHost.Close();
服务配置
下面的代码使用配置设置相同的终结点。
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<behaviors />
<services>
<service behaviorConfiguration="" name="ServiceModel.Calculator">
<endpoint address="https://localhost/Calculator"
binding="basicHttpBinding"
bindingConfiguration="Basic_Unsecured"
name="BasicHttp_ICalculator"
contract="ServiceModel.ICalculator" />
</service>
</services>
<bindings>
<basicHttpBinding>
<binding name="Basic_Unsecured" />
</basicHttpBinding>
</bindings>
<client />
</system.serviceModel>
</configuration>
客户端
下面的代码和配置将独立运行。执行下列操作之一：
使用代码（和客户端代码）创建独立客户端。
创建不定义任何终结点地址的客户端。而使用将配置名称作为参数的客户端构造函数。例如：
Dim cc As New CalculatorClient("EndpointConfigurationName")CalculatorClient cc = new CalculatorClient("EndpointConfigurationName");
代码
下面的代码演示一个访问不安全终结点的基本 WCF 客户端。
' Create an instance of the BasicHttpBinding.
' By default, there is no security.
Dim myBinding As New BasicHttpBinding()
' Create the address string, or get it from configuration.
Dim httpUri As String = "https://localhost/Calculator"
' Create an endpoint address with the address.
Dim myEndpoint As New EndpointAddress(httpUri)
' Create an instance of the WCF client. The client
' code was generated using the Svcutil.exe tool.
Dim cc As New CalculatorClient(myBinding, myEndpoint)
Try
cc.Open()
' Begin using the calculator.
Console.WriteLine(cc.Divide(100, 2))
' Close the client.
cc.Close()
Catch tex As TimeoutException
Console.WriteLine(tex.Message)
cc.Abort()
Catch cex As CommunicationException
Console.WriteLine(cex.Message)
cc.Abort()
Finally
Console.WriteLine("Closed the client")
Console.ReadLine()
End Try
// Create an instance of the BasicHttpBinding.
// By default, there is no security.
BasicHttpBinding myBinding = new BasicHttpBinding();
// Create the address string, or get it from configuration.
string httpUri = "https://localhost/Calculator";
// Create an endpoint address with the address.
EndpointAddress myEndpoint = new EndpointAddress(httpUri);
// Create an instance of the WCF client. The client
// code was generated using the Svcutil.exe tool.
CalculatorClient cc = new CalculatorClient(myBinding, myEndpoint);
try
{
cc.Open();
// Begin using the calculator.
Console.WriteLine(cc.Divide(100, 2));
// Close the client.
cc.Close();
}
catch (TimeoutException tex)
{
Console.WriteLine(tex.Message);
cc.Abort();
}
catch (CommunicationException cex)
{
Console.WriteLine(cex.Message);
cc.Abort();
}
finally
{
Console.WriteLine("Closed the client");
Console.ReadLine();
}
客户端配置
下面的代码将配置客户端。
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_ICalculator" >
<security mode="None">
</security>
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="https://localhost/Calculator/Unsecured"
binding="basicHttpBinding"
bindingConfiguration="BasicHttpBinding_ICalculator"
contract="ICalculator"
name="BasicHttpBinding_ICalculator" />
</client>
</system.serviceModel>
</configuration>