问题描述
几分钟前我工作的一个项目，在Visual Studio 2010，突然我的电脑已经重新启动。结果
重新启动后，我得到了在浏览本机的web站点时，下面的错误：
some minutes ago i was working on a project in visual studio 2010 and suddenly my pc was restarted.
after rebooting i got the error below when browsing that web site in local machine:
请求失败，HTTP状态417：预期失败。
说明：在执行过程中发生未处理的异常
当前Web请求。有关详情，请堆栈跟踪
有关错误的信息它起源于code。
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
异常详细信息：System.Net.WebException：请求失败，
HTTP状态417：预期失败
Exception Details: System.Net.WebException: The request failed with HTTP status 417: Expectation Failed.
我的网站的名称为： MyWebSite 结果
我有一个远程服务器（VPS一）该MyWebSite使用它在一个Web服务，该错误是与它的关系。
my web site's name is : MyWebSite
i have a web service on a remote server (a vps) that MyWebSite is using it and that error is in relationship with it.
Line 172: [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/MyWebSiteEnable", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
Line 173: public bool MyWebSiteEnable() {
Line 174: object[] results = this.Invoke("MyWebSiteEnable", new object[0]);
Line 175: return ((bool)(results[0]));
Line 176: }
每一件事情是确定的有关Web服务。结果
所以，这是什么错误，我该如何解决？结果
有刚返回真实的网络服务中一个简单的布尔方法。结果
和我使用的网络servive在code，后面象下面这样：
every thing is ok about that web service.
so what is this error and how can i fix it?
there is just a simple bool method inside that web service that returns true.
and i am using that web servive in code-behind like below :
private void CheckForPageExpiration()
{
MyService service = new MyService();
if (service.MyWebSiteEnable())
{
}
else
{
Response.Redirect("~/blank.aspx");
}
}
我删除Web服务，然后重新添加，但仍然有错误！结果
有什么错了？
i removed that web service and add it again, but still have that error!
what is wrong about that?
在此先感谢
推荐答案
你有GOOGLE了它？ <一href=\"http://www.$c$cproject.com/Articles/94235/The-request-failed-with-HTTP-status-417-Expectatio\">This表明，问题是，不支持从服务器100继续响应的代理服务器，并且示出了code代表解决它。这可以解释为什么它的工作原理其他网络上。
Have you Googled it? This suggests that the problem is a proxy server that does not support a 100-continue response from the server, and shows code for resolving it. This would explain why it works on another network.
既然你不可能说服你的ISP改变他们的做法（但在请求没有坏处），你应该关闭发送行为100继续为纽带建议有两种方法：
Since you are unlikely to convince your ISP to change their practice (no harm in a request though), you should turn off the behavior of sending a 100-Continue as the link suggests by either:
把这个code。将Web请求前：
Putting this code before an web request:
System.Net.ServicePointManager.Expect100Continue = false;
或者，添加以下行到应用程序的配置文件作为一个孩子的＆LT;结构＆gt; 标签：
<system.net>
<settings>
<servicePointManager expect100Continue="false" />
</settings>
</system.net>
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