private static void ScheduleGetAllRecentContestsJsonCallback(Object state)
{
try
{
HttpWebRequest request = HttpWebRequest.CreateHttp(ConfigurationManager.RecentContestURL);
request.Timeout = REQUEST_TIMEOUT;
request.BeginGetResponse(ar =>
{
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(ar);
using (Stream stream = response.GetResponseStream())
{
StreamReader sr = new StreamReader(stream);
String content = RecentContestManager.ProcessRecentContestsJsonContent(sr.ReadToEnd());
if (!String.IsNullOrEmpty(content))
{
RecentContestCache.SetRecentContestCache(content);//设置缓存
}
}
}, request);
}
catch (System.Exception)
{
;//Do Nothing
}
}
private static async Task <String> GetAllRecentContestsJsonFromWebAsync()
{
HttpClient client = new HttpClient();
client.Timeout = TimeSpan.FromMilliseconds(REQUEST_TIMEOUT);
String content = await client.GetStringAsync(ConfigurationManager.RecentContestURL);
return(RecentContestManager.ProcessRecentContestsJsonContent(content));
}
private const Int32 REQUEST_TIMEOUT = 20000;//ms
#endregion
#region 用户方法
/// <summary>
/// 根据比赛信息地址获取最近比赛信息
/// </summary>
/// <param name="url">比赛信息地址</param>
/// <returns>最近比赛信息</returns>
public static async Task <String> GetAllRecentContestsJsonAsync()
{
String content = RecentContestCache.GetRecentContestCache();//获取缓存
if (String.IsNullOrEmpty(content))
{
content = await RecentContestManager.GetAllRecentContestsJsonFromWebAsync();
RecentContestCache.SetRecentContestCache(content);//设置缓存
}
return(content);
}
