如果WCF接口代码操作时间比较费时,那么当连接数占满时,新的请求将会返回超时错误,请参考以下代码,加在wcf host主机配置文件内

<serviceBehaviors>
<!--

maxConcurrentCalls - 服务中同时存在的最大活动消息数,默认值为 16
maxConcurrentInstances - 服务中同时存在的InstanceContext的最大数量,默认值为26

maxConcurrentSessions - 服务中同时存在的最大会话数,默认值为 10


 -->

  
    <behavior name="h.SOA.E**.Service1Behavior">
                                       <serviceThrottling maxConcurrentCalls="200" maxConcurrentSessions="1000" maxConcurrentInstances="50000" />
     <serviceMetadata httpGetEnabled="true"/>
     <serviceDebug includeExceptionDetailInFaults="false"/>


    </behavior>
    <behavior name="h.SOA.E**.EsalesServiceBehavior">


                                         <serviceThrottling maxConcurrentCalls="200" maxConcurrentSessions="1000" maxConcurrentInstances="50000" />
     <serviceMetadata httpGetEnabled="true"/>
     <serviceDebug includeExceptionDetailInFaults="false"/>
    </behavior>
   </serviceBehaviors>