jhanna has asked for the wisdom of the Perl Monks concerning the following question:
ASSP.sf.net is an Anti-Spam SMTP Proxy written in perl. It uses IO::Socket::INET and IO::Select to multiplex socket connections from SMTP clients and to the mail transport.
For some reason it's dropping bytes. It's not in my perl code, because it happens at irregular intervals, but one user found this pattern:
There is a pattern to the first bad byte, but I haven't figured it out yet... The pattern seems to be based on a 285K byte (291840) cycle After the first 57 bytes lost the system will: successfully transfer 291783 bytes loose another 57 successfully transfer 291783 bytes loose another 57 successfully transfer 291783 bytes loose another 57 Etc...etc.... Test .125-meg.mpeg 128000 Verified OK Test .25-meg.mpeg 255943 Missing Bytes, Total Len: 255943 missing: 57 Bytes at Location 141246 Verification Failed Test .5-meg.mpeg 511886 Missing Bytes, Total Len: 511886 missing: 57 Bytes at Location 187758 missing: 57 Bytes at Location 479541 Verification Failed Test 1-meg.mpeg 1023829 Missing Bytes, Total Len: 1023829 missing: 57 Bytes at Location 207651 missing: 57 Bytes at Location 499434 missing: 57 Bytes at Location 791217 Verification Failed
My question is if there is a socket setting that will improve buffering or provide some other means of making the sockets more robust.
Thanks,
John
update (broquaint): title change (was socket problem)
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