/// <summary>
/// 发送异常页面通知
/// </summary>
/// <param name="exception">异常</param>
private void SendErrorPage(Exception exception)
{
var httpException = exception as HttpException;
var response = HttpContext.Current.Response;
response.Status = httpException != null ? httpException.Code : HttpStatusCode.InternalServerError;
response.Reason = exception.Message;
if (response.Body.CanWrite)
response.Body.SetLength(0);
var args = new ErrorPageEventArgs(HttpContext.Current) { Exception = exception };
// 发送异常错误页面请求事件通知
ErrorPageRequested(this, args);
try
{
var generator = new ResponseWriter();
if (args.IsHandled)
generator.Send(HttpContext.Current, response);
else
generator.SendErrorPage(HttpContext.Current, response, exception);
}
catch (Exception err)
{
Logger.Error("Failed to display error page");
ExceptionHandler.Handle(err);
}
}
/// <summary>
/// 响应上下文中接收请求消息
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnContextRequest(object sender, RequestEventArgs e)
{
var context = (HttpContext)sender;
HttpFactory.Current = Factory;
HttpContext.Current = context;
try
{
var args = new RequestEventArgs(context, e.Request, e.Response);
// 触发请求收到事件通知
RequestReceived(this, args);
// 判断外部程序是否已处理该请求
if (!args.IsHandled)
{
// 如果外部程序未处理该请求，则发送请求的响应消息
var generator = new ResponseWriter();
generator.Send(context, args.Response);
}
// 请求被处理后断开连接
if (e.Response.HttpVersion == "HTTP/1.0" || e.Response.Connection.Type == ConnectionType.Close)
context.Disconnect();
}
catch (Exception err)
{
if (err is HttpException)
{
var exception = (HttpException)err;
SendErrorPage(exception);
}
else
{
Logger.Debug("Request failed.");
ExceptionHandler.Handle(err);
SendErrorPage(err);
}
e.IsHandled = true;
}
}