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Re: Lost UDP packets
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Re: Lost UDP packets


  • Subject: Re: Lost UDP packets
  • From: Mark Hunt <email@hidden>
  • Date: Sat, 25 Sep 2004 21:43:17 +0100

Hi again.

I'll try to reply to all the advice in one message - seems neater.

The problem exists in even the simplest network - 2 Macs joined by a cat 5 cable, and my multi-receiver setup uses a single switch.

Also, there is no other traffic on the wire - this network was implemented solely to transfer my data, and all nodes have fixed IP addresses, so there's not even any DHCP traffic, and I have only 1 transmitter. tcpdump shows only my packets.

Since for any given lost packet, another receiver gets it, I think I can rule out collisions.

I'm still waiting on a meaningful netstat from my beta-tester, but I'm pretty sure the problem is in my receiving application. It's pretty busy, so maybe my network thread (blocked in recvfrom) needs higher priority?

I just wanted to check if there was a "gotcha" I might have missed - Stevens is a pretty big place to search for info ;-)

Thanks to all for your help and advice - I probably will go multicast.

Mark


This message was checked by Mcafee Virusscan Enterprise


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