Thanks for all replies. I think I have got the answer although a little regret.
Li > From: [EMAIL PROTECTED] > To: [email protected] > Subject: Re: About the time limit of connection keeps valid from standby mode > Date: Thu, 11 Sep 2008 15:23:36 +0800 > > I agree with Anderson . > > ----- Original Message ----- > From: "Wenrui Guo" > To: > Sent: Thursday, September 11, 2008 3:19 PM > Subject: RE: About the time limit of connection keeps valid from standby mode > > > Hi, Li > > I wonder if you understanding my explanation. But in order to make the > question more clear, I will just focus on the proposal you mentioned. > First, there is no parameter that control the validation of socket connection > (Maybe some OS experts will challenge me, but please forget it because you > can't use it in Java Runtime Environment) . > Second, even if you could retrieve the parameter, you can't ensure the > connection must change to invalid(close) at that moment, so your solution is > impossible to apply. For the case, as I said before, > Just write your exception handling code and retry. > > BR > anderson > > -----Original Message----- > From: li [mailto:[EMAIL PROTECTED] > Sent: Thursday, September 11, 2008 2:47 PM > To: [email protected] > Subject: RE: About the time limit of connection keeps valid from standby mode > > > Hi, Anderson Guo, > > Thanks for your reply. > > As you guess, my connection is a long-term connection and I hope it can > recover as soon as the computer resumes from a standby mode. > > In standby mode, I think all programs and connections would go to sleep and > also the heart-beat detection mechanism. > > I want to know if there are some parameters (e.g. mina parameters, java vm > parameters, or os parameters), which calculate the time limit of the > connection becoming invalid. > > Regards, > > Li > > > >> Subject: RE: About the time limit of connection keeps valid from >> standby mode >> Date: Thu, 11 Sep 2008 13:50:05 +0800 >> From: [EMAIL PROTECTED] >> To: [email protected] >> >> I am not sure if I understand your issue, but I would like to share my >> opinion with you about it: >> >> First of all, Mina is suitable for both long-term and short-term connection >> oriented programming. Long-term connections means lifetime of the connection >> will last from begin to end, usually the communication protocol should has >> operations that responsible for session create, session keepalive, session >> close. On the other hand, short-term connections, just like http >> connections, created before http request is issued, till received >> corresponding http response. (But for the purpose of performance, most >> programmer choose to open keep-alive option to maintain the http connection >> between client and server). >> >> Second, network related exceptions really exists during the communication >> phase, no matter what kind of connection manner you adoptm, so MINA provides >> exception listener method to allow programmers to process exception >> condition and recovery from it. Limited-retry , forget and continue are most >> popular approaches to handle such cases. >> >> Finally, MINA is java-based network programming framework in nature, there >> is no way to know whether computer system is waken up from sleep mode. So I >> suggest the method to deal with connection invalid case is just encapsulate >> your source code to detect network io exceptions and try to resend your >> information again. >> >> BTW, you mentioned that you connection maybe last for about 10 minutes, >> therefore I guess that program written by you is towards long-term >> connection, so please also adopt heart-beat detection mechanism inside you >> software. >> >> Best Regards >> Anderson Guo >> > > _________________________________________________________________ > 【女性版ビリー？】話題の自宅燃焼系！美しく健康的なくびれをゲット！ > http://clk.atdmt.com/GBL/go/112813569/direct/01/ _________________________________________________________________ Hotmail をお使いの皆様だけに低価格ブロードバンドサービス！ http://campaign.live.jp/eaccess/Top/
