WCF Castle 客户端代理保持通道打开

Question

我正在使用 Castle WCF 工具来使用以下配置初始化客户端代理：

  <component
 id="ComponentID"
 type="SomeType, SomeType"
 wcfEndpointConfiguration="WCFConfig"
 lifestyle="PerWebRequest" >
</component>

我遇到的问题是，在实时情况下，我最终会遇到大量内存泄漏。使用内存分析器对此进行分析后，我似乎在内存中留下了大量的 WCF 通道。我期望 Castle WCF 设施在网络请求结束时清理这个问题是否正确？

Answer 1

如果您使用 perwebrequest 生活方式，则需要确保在整个请求过程中不会重新创建 HttpContext。如果是，那么您需要传递 HttpContext.Items，因为 Castle http 模块使用它来跟踪组件。

例如

改变这个：

public CapturedViewResult Capture(ControllerContext controllerContext, Func<ActionResult> action)
    {
        CapturedViewResult capturedViewResult = new CapturedViewResult();

        HttpContext currentContext = HttpContext.Current;

        using (StringWriter stringWriter = new StringWriter(CultureInfo.InvariantCulture))
        {
            HttpResponse response = new HttpResponse(stringWriter);
            HttpContext context = new HttpContext(currentContext.Request, response) { User = currentContext.User };
            context.Items["LocalizationContext"] = currentContext.Items["LocalizationContext"];

            HttpContext.Current = context;

            ViewResult result = action.Invoke() as ViewResult;

            if (result != null)
            {
                capturedViewResult.ViewName = result.ViewName;
                result.ExecuteResult(controllerContext);
            }
            else
            {
                throw new ArgumentException("Supplied controller action method did not return a ViewResult", "action");
            }

            HttpContext.Current = currentContext;

            capturedViewResult.CapturedHtml = stringWriter.ToString();
        }

        return capturedViewResult;
    }

到这个：

 public CapturedViewResult Capture(ControllerContext controllerContext, Func<ActionResult> action)
    {
        var capturedViewResult = new CapturedViewResult();

        var currentContext = HttpContext.Current;

        using (var stringWriter = new StringWriter(CultureInfo.InvariantCulture))
        {
            var response = new HttpResponse(stringWriter);
            var context = new HttpContext(currentContext.Request, response) { User = currentContext.User };

            foreach (var key in currentContext.Items.Keys)
            {
                context.Items.Add(key, currentContext.Items[key]);
            }

            HttpContext.Current = context;

            var result = action.Invoke() as ViewResult;

            if (result != null)
            {
                capturedViewResult.ViewName = result.ViewName;
                result.ExecuteResult(controllerContext);
            }
            else
            {
                throw new ArgumentException("Supplied controller action method did not return a ViewResult", "action");
            }

            foreach (var key in context.Items.Keys)
            {
                currentContext.Items[key] = context.Items[key];
            }

            HttpContext.Current = currentContext;

            capturedViewResult.CapturedHtml = stringWriter.ToString();
        }

        return capturedViewResult;
    }