On Sun, Oct 3, 2010 at 1:10 PM, Arno Garrels arno.garr...@gmx.de wrote:
Angus Robertson - Magenta Systems Ltd wrote:
Has anyone built a component to queue email until an SMTP relay
server is available?
Not yet, but it's probably no big deal to write one.
It could be a simple two files per item approach.
One email file written to the queue directory with method
SendToFile so it can be resent as is with OwnHeaders and
TIcsStreamReader or from a TStringList later on, and one
info file containing related properties including MxIPs,
Port.. as well as a next retry value, last error etc..
Both files would share the same filename with different
extensions.
--
Arno Garrels
We use a similar approach in our disk cache--two same named files with
different extensions. One of the files is the binary data file and other one
is a TMemIniFile. If you are dealing with URLs and want to convert URL to a
file name, don't bother with all the 8 Windows' non-file name
characters--just SHA1-hash the url to consturct the file name.
We also tried an ini file for writing the name of the files (index) to disk
but this turned out to be a real pain/slow after a few thousand files since
it scans all the previous records for the same namein name=value format
of inis as it does not assume there are no duplicate names. So I wrote my
own very simple format such as:
[DiskCacheObjects]
DiskCacheLastSize=5002345
ObjectsCount=3
ObjectURI-0=CProxy:Defaulthttp://www.iqproxyserver.com
ObjectURI-1=CProxy:Defaulthttp://www.fastream.com/IQProxyServer.exe
ObjectURI-2=CProxy:Defaulthttp://www.intel.com
So it's gotten quite mature now. Just FYI.
Best Regards,
SZ
www.iqproxyserver.com
--
To unsubscribe or change your settings for TWSocket mailing list
please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket
Visit our website at http://www.overbyte.be
