Ed W <li...@wildgooses.com> wrote: > Andrzej Adam Filip wrote: >> Could you offer some suggestion how to fetch mailbox content over >> high RTT link (with negligible packet loss)? >> >> Currently I use IMAP+IDLE *but* it fails to use full available bandwidth >> due to high RTT and "send command wait for response" nature of POP3 and >> IMAP4 protocols. >> >> > > Is this a satellite phone question? > > I build a bunch of products to help with this, but for a fairly > specialist market. You can probably contact me offlist via this email > address or any of them on the website below? > > http://www.mailasail.com > > However, we use lots of compression, pipelining and some predictive > fetches to wring every bit of performance out of a 2.4Kbit connection > with 1.5s+ latency > > Good luck > > Ed W
It is not a a satellite phone question. :-) It is "imap over (compressed) ssh" with "link merely one category above modem speed" to access "shared mailbox". Fetchamil's IMAP+IDLE works "almost acceptable" except pretty long periods of pretty high loads on the link. It seems that significant part of problems is sufficiently similar to sat-phone situation. BTW Do you suffer sufficient packet loss to consider using UDP instead of TCP based protocols? -- [pl>en: Andrew] Andrzej Adam Filip : a...@onet.eu There is no likelihood man can ever tap the power of the atom. -- Robert Millikan, Nobel Prize in Physics, 1923
