WCF 服务，如何增加超时？

可能看起来是一个愚蠢的问题，但是 WCF 中的一切似乎比 asmx 复杂得多，我怎样才能增加 svc 服务的超时？

以下是我目前掌握的信息:

<bindings>
<basicHttpBinding>
<binding name="IncreasedTimeout"
openTimeout="12:00:00"
receiveTimeout="12:00:00" closeTimeout="12:00:00"
sendTimeout="12:00:00">
</binding>
</basicHttpBinding>
</bindings>

然后我的终点被映射成这样:

<endpoint address=""
binding="basicHttpBinding" bindingConfiguration="IncreasedTimeout"
contract="ServiceLibrary.IDownloads">
<identity>
<dns value="localhost" />
</identity>
</endpoint>

我得到的确切错误是:

请求通道在00:00:59.9990000之后等待答复时超时。增加传递给 Request 调用的超时值或增加 Binding 上的 SendTimeout 值。分配给此操作的时间可能是较长超时的一部分。

在 WCF 测试客户端中，有一个配置图标，其中包含我的服务的运行时配置:

正如你所看到的，它的值和我设置的不一样? 我做错了什么？

<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_IDownloads" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="">
<extendedProtectionPolicy policyEnforcement="Never" />
</transport>
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</basicHttpBinding>
</bindings>

262823

小开

In your binding configuration, there are four timeout values you can tweak:

<bindings>
<basicHttpBinding>
<binding name="IncreasedTimeout"
sendTimeout="00:25:00">
</binding>
</basicHttpBinding>

The most important is the sendTimeout, which says how long the client will wait for a response from your WCF service. You can specify hours:minutes:seconds in your settings - in my sample, I set the timeout to 25 minutes.

The openTimeout as the name implies is the amount of time you're willing to wait when you open the connection to your WCF service. Similarly, the closeTimeout is the amount of time when you close the connection (dispose the client proxy) that you'll wait before an exception is thrown.

The receiveTimeout is a bit like a mirror for the sendTimeout - while the send timeout is the amount of time you'll wait for a response from the server, the receiveTimeout is the amount of time you'll give you client to receive and process the response from the server.

In case you're send back and forth "normal" messages, both can be pretty short - especially the receiveTimeout, since receiving a SOAP message, decrypting, checking and deserializing it should take almost no time. The story is different with streaming - in that case, you might need more time on the client to actually complete the "download" of the stream you get back from the server.

There's also openTimeout, receiveTimeout, and closeTimeout. The MSDN docs on binding gives you more information on what these are for.

To get a serious grip on all the intricasies of WCF, I would strongly recommend you purchase the "Learning WCF" book by Michele Leroux Bustamante:

Learning WCF http://ecx.images-amazon.com/images/I/51GNuqUJq%2BL._BO2,204,203,200_PIsitb-sticker-arrow-click,TopRight,35,-76_AA240_SH20_OU01_.jpg

and you also spend some time watching her 15-part "WCF Top to Bottom" screencast series - highly recommended!

For more advanced topics I recommend that you check out Juwal Lowy's Programming WCF Services book.

Programming WCF http://ecx.images-amazon.com/images/I/41odWcLoGAL._BO2,204,203,200_PIsitb-sticker-arrow-click,TopRight,35,-76_AA240_SH20_OU01_.jpg

最佳答案

The timeout configuration needs to be set at the client level, so the configuration I was setting in the web.config had no effect, the WCF test tool has its own configuration and there is where you need to set the timeout.

Got the same error recently but was able to fixed it by ensuring to close every wcf client call. eg.

WCFServiceClient client = new WCFServiceClient ();
//More codes here
// Always close the client.
client.Close();

using(WCFServiceClient client = new WCFServiceClient ())
{
//More codes here
}

The best way is to change any setting you want in your code.

Check out the below example:

using(WCFServiceClient client = new WCFServiceClient ())
{
client.Endpoint.Binding.SendTimeout = new TimeSpan(0, 1, 30);
}