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If (bind(fd,(struct sockaddr *) &addr,sizeof(addr)) < 0) If (setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(yes)) < 0) If we hook a separate computer (that makes this bidirectional) and use a different sender, everything works just fine. I've quadruple checked the ports & ip addresses (so have a few other people). I don't want to accidentally post proprietary info and end up getting fired. Note: Yes this code is borrowed from another website, but I assure you I can do it on my own. Does anyone have any ideas about what the problem could be? I used the following fields for identifying a packet: src ip dst ip src port dst port tcp seq nr tcp ack seq nr ip id packet length In a single 1.7GB cap-file with 17424367 TCP packets I get 27 identical packets based on the above id. When I use a sender/receiver on a regular network everything works fine. I took a project that I made a year ago and tried it, I have also used other people's projects online, but the only project that ever picked up a MC project at all was a java project, it grabbed 4 packets during 1 run, and 1 packet during another.
Ip packet sender receiver how to#
The MC comes through to Computer B, I can see this on WireShark & tcpdump, but I can't figure out how to troubleshoot exactly why my program won't read any MC packet. Herein, the detected packet is a packet for allowing the sender.
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We begin with a discussion of the loss and delay characteristics of an IP multicast channel and from this show the need for packet loss recovery. For example, the IP management device 108 transmits a broadcast blocking packet BRD (a sender IP, an MAC-P, a sender IP and an FF) throughout the entire band, or transmits a unicast blocking packet UNI (a receiver IP, an MAC-P, a sender IP and a sender MAC) to the sender address. I'm taking over a MC project that sends data from computer A to Computer B, but not the other way around (it physically can't). CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): We survey a number of packet-loss recovery techniques for streaming audio applications operating using IP multicast.