c# - WCF 服务基址与端点地址

Question

下面两种情况有什么区别:

配置一:

<service name="WcfService1.Service1" behaviorConfiguration="MyServiceTypeBehaviors">
    <host>
        <baseAddresses>
            <add baseAddress="net.tcp://127.0.0.1:808/" />
        </baseAddresses>
    </host>
    <endpoint address="service"
              binding="netTcpBinding" 
              bindingConfiguration="MainBinding" 
              bindingName="MainBinding" 
              name="DefaultEndpoint" 
              contract="WcfService1.IService1" />
    <endpoint address="mex" 
              binding="mexTcpBinding" 
              contract="IMetadataExchange" />
</service>

配置 2:

<service name="WcfService1.Service1" behaviorConfiguration="MyServiceTypeBehaviors">
    <host>
        <baseAddresses>
            <add baseAddress="net.tcp://127.0.0.1:808/service" />
        </baseAddresses>
    </host>
    <endpoint address="net.tcp://127.0.0.1:808/service" 
              binding="netTcpBinding" 
              bindingConfiguration="MainBinding" 
              bindingName="MainBinding" 
              name="DefaultEndpoint" 
              contract="WcfService1.IService1" />
    <endpoint address="mex" 
              binding="mexTcpBinding" 
              contract="IMetadataExchange" />
  </service>

我的理解是在任何一种情况下，基地址 + 端点地址 都解析为相同的绝对地址

但为什么我在 Configuration 2 上收到错误:“No end point is listening at net.tcp://127.0.0.1:808/
但是配置 1运行服务没有任何错误!!!

编辑 1:

工作配置:

<host>
    <baseAddresses>
        <add baseAddress="net.tcp://127.0.0.1:808/" />
    </baseAddresses>
</host>
<endpoint address="service"
          binding="netTcpBinding" 
          bindingConfiguration="MainBinding" 
          bindingName="MainBinding" 
          name="DefaultEndpoint" 
          contract="WcfService1.IService1" />

非工作配置:

<host>
    <!--
    <baseAddresses>
        <add baseAddress="" />
    </baseAddresses>
    -->
 </host>
 <endpoint address="net.tcp://127.0.0.1:808/service"
           binding="netTcpBinding" 
           bindingConfiguration="MainBinding" 
           bindingName="MainBinding" 
           name="DefaultEndpoint" 
           contract="WcfService1.IService1" />
 <endpoint address="mex" 
           binding="mexTcpBinding" 
           contract="IMetadataExchange" />

在这种情况下，我删除了基地址并提供了完整的服务地址(没有 .svc 路径)，但出现套接字超时错误。在这种情况下有什么问题？未定义基地址时，终点地址是否始终需要带有 .svc 的完整地址？如果是这样，背后的原因可能是什么？

Answer 1

baseAddress就是这样，你的端点的基地址(除非明确指定)。所以每个 <endpoint>将从 <baseAddress> 继承(这就是为什么它们通常是 "" 和 "mex" 的原因)。例如

<host>
   <baseAddresses>
     <add baseAddress="http://127.0.0.1:1337/" />
   </baseAddresses>
</host>
...
<endpoint address="" contract="MyService.IMyContract" ... />
<endpoint address="mex" contract="IMetadataExchange" ... />

您现在有两个端点:

• http://127.0.0.1:1337/ - 服务端点
• http://127.0.0.1:1337/mex - 元数据端点

通过免除 <baseAddress>你需要 <endpoints>两者都是完全合格的(包括 mex(不是))。例如

<host>
   <baseAddresses/>
</host>
...
<endpoint address="net.tcp://127.0.0.1:1337/" contract="MyService.IMyContract" ... />
<endpoint address="http://127.0.0.1:1337/mex" contract="IMetadataExchange" ... />

您现在有两个不同的端点:

• net.tcp://127.0.0.1:1337/ - 服务端点
• http://127.0.0.1:1337/mex - 元数据端点