| 词条 | DeltaSync | ||||||||||||||||||||||
| 释义 |
DeltaSync was a proprietary Microsoft communications protocol for synchronizing web services with offline clients.[1] It was switched off by Microsoft on 30 June 2016. Windows Live Hotmail was connected to offline clients using DeltaSync; Outlook Connector and the Windows Live Mail client use it for offline access. Microsoft pushed for this protocol instead of POP3 or IMAP4 for supporting various advanced features, like contacts, calendar, and notes synchronization. Using the DeltaSync protocol, Microsoft intended to provide a common platform for any compatible device to implement a client which can two-way synchronize mail, contacts, calendar, and notes. HistoryIn January 2007, Microsoft announced DeltaSync as the replacement for WebDAV. In April 2008, Microsoft sent an email warning that WebDAV would no longer be supported after 30 June 2008.[2] However, in May 2008, Microsoft stated that it would be "postponing the transition deadline previously announced" to allow customers more time to "evaluate alternative solutions".[3] In June 2009, Microsoft announced that WebDAV support would finally end on 1 September 2009.[4] Format detailsThe DeltaSync compression code produces a stream with a four byte magic number of "HU01", followed by the stream header. HU01 header
Following this header is a series of compressed data blocks with the following structure. SCBH header
This is followed by 256 bytes of decompression table and finally the actual compressed data. DiscontinuationSince Microsoft migrated the Outlook.com mail to use a structure based on Office 365, the DeltaSync protocol was discontinued on 30 June 2016, and mail will not be able to be synced using Windows Live Mail after that time.[5] Google's Gmail and some other providers' mail services still work with DeltaSync. Although DeltaSync has sunk, Microsoft's Windows Live Mail 2011 and 2012 continue to work with Hotmail e-mail accounts, by using IMAP (or, less effectively, POP) in place of DeltaSync.[6][7] See also
References1. ^{{cite web |url=http://windowsvistablog.com/blogs/windowsexperience/archive/2007/06/11/microsoft-office-outlook-connector-beta-now-available.aspx |title=Microsoft Office Outlook Connector Beta Now Available |author=Brandon LeBlanc |accessdate=2007-06-14 |deadurl=yes |archiveurl=https://web.archive.org/web/20070614165812/http://windowsvistablog.com/blogs/windowsexperience/archive/2007/06/11/microsoft-office-outlook-connector-beta-now-available.aspx |archivedate=2007-06-14 |df= }} 2. ^WebDAV no longer supported on Hotmail 3. ^Responding to Customer Feedback – Disabling DAV 4. ^{{Cite web|url=https://arstechnica.com/microsoft/news/2009/06/hotmail-access-via-outlook-express-dies-on-september-1.ars|title=Hotmail access via Outlook Express dies on September 1|date=2009-06-02|accessdate=2009-06-03|publisher =Ars Technica}} 5. ^{{Cite web|url=https://support.office.com/en-us/article/Windows-Live-Mail-2012-will-not-connect-to-Outlook-com-45453b92-373b-4bbb-88ca-f8ec74f8e8fd|title=Windows Live Mail 2012 will not connect to Outlook.com|date=2016-06-01|publisher=Microsoft}} 6. ^{{Cite web|url=http://www.askvg.com/fix-windows-live-mail-stopped-syncing-hotmail-outlook-and-other-microsoft-email-accounts/|title=Replace DeltaSync with IMAP}} 7. ^{{Cite web|url=https://support.office.com/en-gb/article/Add-your-Outlook-com-account-to-another-mail-app-73f3b178-0009-41ae-aab1-87b80fa94970?ui=en-US&rs=en-GB&ad=GB|title=Add your Outlook com account to another mail app}} External links
1 : Windows Live |
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