当调用返回字符串“成功”的方法时,WCF 客户端在 120 秒后返回上述异常。来自服务器的日志显示它完全执行并在大约 3 分钟内完成。启用跟踪后,我没有看到任何错误抛出。 任何帮助将不胜感激,因为不幸的是,来自类似问题的其他建议没有帮助。谢谢!
编辑 - 已解决:原来客户端使用的是 Smoothwall 过滤设备,该设备在两分钟后关闭连接。
异常(exception):
System.ServiceModel.CommunicationException The underlying connection was closed: The connection was closed unexpectedly.
Stack Trace: at System.Net.HttpWebRequest.GetResponse()
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
内部异常:
System.Net.WebException The underlying connection was closed: The connection was closed unexpectedly.The underlying connection was closed: The connection was closed unexpectedly.
Stack Trace: at System.Net.HttpWebRequest.GetResponse()
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
据我所知,绑定(bind)设置正确且超时超过 120 秒。这是客户端绑定(bind):
<bindings>
<customBinding>
<binding name="CustomBinding_IPHG" closeTimeout="00:05:00"
openTimeout="00:05:00" receiveTimeout="00:15:00" sendTimeout="00:15:00">
<security authenticationMode="SecureConversation" requireDerivedKeys="false">
<localClientSettings maxClockSkew="00:30:00" />
<localServiceSettings maxClockSkew="00:30:00" />
<secureConversationBootstrap authenticationMode="UserNameOverTransport">
<localClientSettings maxClockSkew="00:30:00" />
<localServiceSettings maxClockSkew="00:30:00" />
</secureConversationBootstrap>
</security>
<textMessageEncoding>
<readerQuotas maxStringContentLength="5242880" />
</textMessageEncoding>
<httpsTransport maxReceivedMessageSize="6553600" useDefaultWebProxy="true" />
</binding>
</customBinding>
</bindings>
<behaviors>
<endpointBehaviors>
<behavior name="commonBehaviour">
<dataContractSerializer maxItemsInObjectGraph="2147483647"/>
<clientCredentials>
<serviceCertificate>
<authentication certificateValidationMode="PeerOrChainTrust"/>
</serviceCertificate>
</clientCredentials>
</behavior>
</endpointBehaviors>
</behaviors>
这是服务器绑定(bind):
<bindings>
<customBinding>
<binding name="CommonBinding" closeTimeout="00:05:00" openTimeout="00:05:00" receiveTimeout="00:15:00" sendTimeout="00:15:00">
<transactionFlow />
<security authenticationMode="SecureConversation" requireDerivedKeys="false">
<secureConversationBootstrap authenticationMode="UserNameOverTransport">
<localServiceSettings maxClockSkew="00:30:00" />
<localClientSettings maxClockSkew="00:30:00" />
</secureConversationBootstrap>
<localServiceSettings maxClockSkew="00:30:00" />
<localClientSettings maxClockSkew="00:30:00" />
</security>
<textMessageEncoding>
<readerQuotas maxStringContentLength="41943040"/>
</textMessageEncoding>
<httpsTransport maxBufferSize="41943040" maxReceivedMessageSize="41943040" />
</binding>
</customBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior name="BehaviorRBS">
<serviceMetadata httpsGetEnabled="true" httpGetEnabled="false" />
<serviceDebug includeExceptionDetailInFaults="true" httpHelpPageEnabled="false" />
<dataContractSerializer maxItemsInObjectGraph="2147483647" />
<serviceCredentials>
<userNameAuthentication userNamePasswordValidationMode="Custom" customUserNamePasswordValidatorType="PHGAPI.PHGUserNamePassValidator, PHGAPI"/>
<serviceCertificate
findValue="*.domainname.com"
x509FindType="FindBySubjectName"
storeLocation="LocalMachine"
storeName="My" />
</serviceCredentials>
<serviceThrottling maxConcurrentCalls="200" maxConcurrentSessions="400" maxConcurrentInstances="600" />
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="BehaviorRBS" name="PHGAPI.iAPI">
<endpoint address="" binding="customBinding" bindingConfiguration="CommonBinding" contract="PHGAPI.IiAPI" />
</service>
</services>
这是相关方法的接口(interface):
[OperationContract]
string SetSuspensions(List<Suspension> suspensions);
最佳答案
我会查看默认值为 120 秒的 WCF 和相关配置设置。为此,您可能需要查看 HTTP.sys
connectionTimeout
值。
来自微软文档:
由于以下原因,连接可以被视为不活动:
- HTTP.sys Timer_ConnectionIdle 计时器已过期。连接 已过期并保持闲置状态。
- HTTP.sys Timer_EntityBody 计时器已过期。连接已过期 在请求实体主体到达之前。当很明显 请求有一个实体主体,HTTP API 打开 Timer_EntityBody 定时器。最初,此计时器的限制设置为 连接超时值。每次另一个数据指示是 收到此请求后,HTTP API 会重置计时器以提供 connectionTimeout 中指定的连接更多分钟 属性。
- HTTP.sys Timer_AppPool 计时器已过期。连接已过期 因为请求在应用程序池队列中等待太久 服务器应用程序出列并处理它。本次超时时间 是连接超时。
默认值为 00:02:00(两分钟)。
http://www.iis.net/configreference/system.applicationhost/sites/sitedefaults/limits
祝你好运。
关于c# - WCF 超时太快 & 'Connection was closed unexpectedly' 异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22507779/