2009/3/4 <[email protected]>: > > lichun li <[email protected]> 写于 2009-03-04 10:49:41: > >> So the other node will automatically become notifier before the >> subscriber refreshes subscription? > Yes > >> Another question. What will a notifier do if it detects that a >> subscriber fails? > Current version of the draft doesn't take account of this situation. Since > the notifier may not adjacent to the subscriber, it's difficult to perform > such a failure detection. To ease the situation, notifier should configure a > appropriate expirition timer and prohibit permanent subscription.
I think notifier can detect subscriber's failing if the subscriber doesn't respond to notify messages. >> >> 2009/3/4 <[email protected]> >> > >> > Thanks for the comments, see 3.3.4 >> > 3.3.4. Storage and replication >> > >> > The Notifier MUST store the subscription state as part of resource >> > data object and enforce the same replication strategy. In case a node >> > fails, the other node where the replica stored can process any >> > request towards the replicated resource. >> > >> > Thanks >> > >> > >> > >> > >> > >> > lichun li <[email protected]> >> > >> > 2009-03-03 20:38 >> > >> > 收件人 >> > [email protected] >> > 抄送 >> > "[email protected]" <[email protected]> >> > 主题 >> > Re: [P2PSIP] New Version Notification for draft-wang-p2psip-event- >> notification-extension-00 >> > >> > >> > >> > >> > I think subscribe/notify mechnism is very neccesary and can also be used >> > to inform other events other than data modification. >> > >> > Have consider notifier migration? At a glance, I don't find notifier >> > migration in the draft. >> > If the orignal notifier leaves or fails, another peer should become >> > new notifier immediately. >> > Otherwise, the subscriber may not get the latest data for a while. >> > >> > On Tue, Mar 3, 2009 at 4:05 PM, <[email protected]> wrote: >> > > >> > > Hi,folks >> > > I have wrote a draft regarding p2psip event notification >> > > extension. I >> > > think it can meet the requirements of real time data access scenario. >> > > >> > > Hope for your comments. >> > > >> > > IETF I-D Submission Tool <[email protected]> >> > > >> > > 2009-03-02 19:40 >> > > >> > > 收件人 >> > > [email protected] >> > > 抄送 >> > > [email protected] >> > > 主题 >> > > New Version Notification for >> > > draft-wang-p2psip-event-notification-extension-00 >> > > >> > > >> > > >> > > >> > > >> > > A new version of I-D, draft-wang-p2psip-event-notification- >> extension-00.txt >> > > has been successfuly submitted by Jun Wang and posted to the IETF >> > > repository. >> > > >> > > Filename: >> > > draft-wang-p2psip-event-notification-extension >> > > Revision: 00 >> > > Title: P2PSIP Event >> Notification Extension >> > > Creation_date: 2009-03-02 >> > > WG ID: Independent Submission >> > > Number_of_pages: 20 >> > > >> > > Abstract: >> > > The p2p technology is data centric, where the data objects are >> > > distributed in the p2p overlay according to the routing algorithm. >> > > Applications access the data objects via peer/client protocol or >> > > gateways, and some of them require data replicas to be synchronized >> > > in real time, such as a data object stored in overlay and its cache >> > > copy in client memory. This can be achieved by introducing an event >> > > notification extension to p2p protocol. This document describes the >> > > subscribe/notify mechanism for p2psip and define several new methods >> > > to implement such extension. >> > > >> > > >> > > >> > > >> > > The IETF Secretariat. >> > > >> > > >> > > >> > > -------------------------------------------------------- >> > > ZTE Information Security Notice: The information contained in >> this mail is solely property of the sender's organization. This mail >> communication is confidential. Recipients named above are obligated >> to maintain secrecy and are not permitted to disclose the contents >> of this communication to others. >> > > This email and any files transmitted with it are confidential >> and intended solely for the use of the individual or entity to whom >> they are addressed. If you have received this email in error please >> notify the originator of the message. Any views expressed in this >> message are those of the individual sender. >> > > This message has been scanned for viruses and Spam by ZTE Anti- >> Spam system. >> > > >> > > _______________________________________________ >> > > P2PSIP mailing list >> > > [email protected] >> > > https://www.ietf.org/mailman/listinfo/p2psip >> > > >> > > >> > >> > >> > >> > -- >> > Sincerely yours, >> > >> > Lichun Li >> > Mobile Life New Media Lab, BUPT >> > >> > >> > -------------------------------------------------------- >> > ZTE Information Security Notice: The information contained in this >> mail is solely property of the sender's organization. This mail >> communication is confidential. Recipients named above are obligated >> to maintain secrecy and are not permitted to disclose the contents >> of this communication to others. >> > This email and any files transmitted with it are confidential and >> intended solely for the use of the individual or entity to whom they >> are addressed. If you have received this email in error please >> notify the originator of the message. Any views expressed in this >> message are those of the individual sender. >> > This message has been scanned for viruses and Spam by ZTE Anti-Spam >> > system. >> >> >> >> -- >> Sincerely yours, >> >> Lichun Li >> Mobile Life New Media Lab, BUPT > > -------------------------------------------------------- > ZTE Information Security Notice: The information contained in this mail is > solely property of the sender's organization. This mail communication is > confidential. Recipients named above are obligated to maintain secrecy and > are not permitted to disclose the contents of this communication to others. > This email and any files transmitted with it are confidential and intended > solely for the use of the individual or entity to whom they are addressed. If > you have received this email in error please notify the originator of the > message. Any views expressed in this message are those of the individual > sender. > This message has been scanned for viruses and Spam by ZTE Anti-Spam system. > -- Sincerely yours, Lichun Li Mobile Life New Media Lab, BUPT _______________________________________________ P2PSIP mailing list [email protected] https://www.ietf.org/mailman/listinfo/p2psip
