我有一个自托管网络服务（WebServiceHost），它还提供 html 网站（带有 JavaScript 文件、图像等）。该服务在 .net 4.0（带有 vs2010）中运行良好。
现在我已经安装了 vs2012 并且我的应用程序似乎坏了（仍在使用 vs2010 - 可能是安装 .net 4.5 的原因）。它编译得很好，我也没有运行时错误，但 html 和 JavaScript 在某些情况下似乎被破坏了。以下是（我认为）相关的代码片段：
使用的接口（System.Data.Services）：
public interface IRequestHandler
{
Message ProcessRequestForMessage(Stream messageBody);
}
消息的创建：
string filePath = _physicalPath + string.Join("\\", incomingRequest.UriTemplateMatch.RelativePathSegments.ToArray());
HttpResponseMessageProperty responseProperty = new HttpResponseMessageProperty();
if (File.Exists(filePath) && SetContentType(responseProperty.Headers, Path.GetExtension(filePath).ToLower()))
{
Message message = Message.CreateMessage(MessageVersion.None, "", HttpServiceBodyWriter.Create(filePath));
message.Properties.Add(WebBodyFormatMessageProperty.Name, new WebBodyFormatMessageProperty(WebContentFormat.Raw));
message.Properties.Add(HttpResponseMessageProperty.Name, responseProperty);
}
HttpServiceBodyWriter：
class HttpServiceBodyWriter : StreamBodyWriter
{
private System.IO.Stream _source = null;
private HttpServiceBodyWriter(System.IO.Stream source) : base(false)
{
_source = source;
}
protected override void OnWriteBodyContents(System.IO.Stream stream)
{
_source.CopyTo(stream);
}
internal static HttpServiceBodyWriter Create(System.Net.WebResponse response)
{
return new HttpServiceBodyWriter(response.GetResponseStream());
}
internal static HttpServiceBodyWriter Create(string filePath)
{
return new HttpServiceBodyWriter(File.Open(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
}
}
如果我请求一个 HTML 页面，这有时会提供一个损坏的页面（参见双 dtd 定义和“head”之后的空标记）：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<>
.....
有时会传递正确的页面：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta charset="UTF-8" />
....
似乎初始页面请求总是提供正确的页面。后续请求损坏。
有没有人解释这种奇怪的行为？任何帮助表示赞赏（这个问题让我想起了 C++ 时代）。
这是 App.Config 的 serviceModel 部分：
<system.serviceModel>
<diagnostics>
<messageLogging logEntireMessage="true" logMalformedMessages="true" logMessagesAtServiceLevel="false" logMessagesAtTransportLevel="true" maxMessagesToLog="300000" maxSizeOfMessageToLog="200000" />
</diagnostics>
<services>
<service name="WcfTest.HttpService" behaviorConfiguration="DataServiceBehavior">
<endpoint name="DataService" binding="webHttpBinding" bindingConfiguration="DataService" contract="System.Data.Services.IRequestHandler" />
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080/TestSite/" />
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<endpointBehaviors />
<serviceBehaviors>
<behavior name="DataServiceBehavior">
<serviceDebug includeExceptionDetailInFaults="False" />
<dataContractSerializer maxItemsInObjectGraph="1000000" />
<serviceMetadata httpGetEnabled="true" />
<serviceThrottling maxConcurrentCalls="200" maxConcurrentInstances="2147483647" maxConcurrentSessions="200" />
</behavior>
</serviceBehaviors>
</behaviors>
<bindings>
<webHttpBinding>
<binding name="DataService" maxReceivedMessageSize="5000000" maxBufferPoolSize="5000000" maxBufferSize="5000000" closeTimeout="00:03:00" openTimeout="00:03:00" receiveTimeout="00:10:00" sendTimeout="00:03:00">
<readerQuotas maxStringContentLength="5000000" maxArrayLength="5000000" maxBytesPerRead="5000000" />
<security mode="None"/>
</binding>
</webHttpBinding>
</bindings>
</system.serviceModel>
更新
我创建了一个小项目，您可以在其中重现此问题。你可以在这里下载：https ://skydrive.live.com/redir?resid=CBC3C885DE2032B8!131&authkey=!ALZOaSL0V0s-itM
只需按几次浏览器的刷新按钮，直到出现损坏的 html。