/// <summary>
/// 进程结束时提供异步处理 End 方法。
/// </summary>
/// <param name="result">包含有关进程状态信息的 System.IAsyncResult。</param>
public void EndProcessRequest(IAsyncResult result)
{
PushPipe pipe = result as PushPipe;
if (pipe != null && pipe.Context != null)
{
pipe.Context.Flush(pipe.Data);
}
}
/// <summary>
/// 通过用户PUSH通道将数据PUSH给用户
/// </summary>
/// <param name="userId"></param>
/// <param name="pushData"></param>
public static void Push(this int userId, byte[] pushData)
{
PushPipe pipe = userId.GetPipes();
if (null != pipe)
{
pipe.Data = pushData;
pipe.Push();
}
userId.RemovePipes();
}
/// <summary>
/// 记录用户PUSH通道
/// </summary>
/// <param name="pipe"></param>
/// <param name="userId"></param>
public static void SetPipe(this PushPipe pipe, int userId)
{
string cacheKey = string.Format("PIPE_{0}", userId);
object userPipe = PipeCacheName.GetCache(cacheKey);
if (null != PipeCacheName.GetCache(cacheKey))
{
userId.RemovePipes();
}
PipeCacheName.SetCache(cacheKey, new Tuple <PushPipe, DateTime>(pipe, DateTime.Now));
}
/// <summary>
/// 启动对 HTTP 处理程序的异步调用。
/// </summary>
/// <param name="httpContext">一个 System.Web.HttpContext 对象，该对象提供对用于向 HTTP 请求提供服务的内部服务器对象（如 Request、Response、Session 和 Server）的引用。</param>
/// <param name="callback">异步方法调用完成时要调用的 System.AsyncCallback。如果 cb 为 null，则不调用委托。</param>
/// <param name="extraData">处理该请求所需的所有额外数据。</param>
/// <returns>包含有关进程状态信息的 System.IAsyncResult。</returns>
public IAsyncResult BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, object extraData)
{
IContext context = httpContext.Items[Constants.ContextKey] as IContext;
if (context != null && context is SyncContext)
{
SyncContext syncContext = context as SyncContext;
PushPipe pipe = new PushPipe(httpContext, callback, syncContext);
pipe.SetPipe(syncContext.UserId);
//
syncContext.Execute(syncContext);
//
return(pipe);
}
httpContext.Response.Close();
return(null);
}
