However, this is typically only necessary if there are other computers on the network that may interfere by using the same multicast group. Transmit_file(argv,argv,INTERFACE_IP,UDP_PORT) īinding or routing to the loopback device is necessary if you do not want IP multicast traffic (such as IGMP messages) to be sent across the network. I have already tried following commands sudo ifconfig lo multicastĪny suggestion in this regard would be very helpful. ![]() I'm able to see packet getting transmitted in wireshark but the src ip is taken from my default network interface (i.e interface which is my default gateway) But when tried to play the same on vlc it didn't worked. Leaving aside other bitrate and controlled multicast issues, I tried to read one video file and multicast on loopback device. The idea is to receive a video stream via RTSP/HTTP or any other network protocol and multicast it on the loopback address so that I can use VLC to play the stream using multicast address. A discussion of IPv4 multicasting appears in 20 Quality of Service.I wish to send UDP multicast packets to loopback address and receive the same in other application. Due to this degree of router participation, backbone router support for multicasting has not been entirely forthcoming. R1 must also keep track of what hosts have joined the multicast group and what hosts have left. For example, if hosts A, B and C each connect to different interfaces of router R1, and A wishes to send a multicast packet to B and C, then it is up to R1 to receive the packet, figure out that B and C are the intended recipients, and forward the packet twice, once for B’s interface and once for C’s. Support for IPv4 multicast requires considerable participation by the backbone routers involved. A reasonable goal of multicast would be that no more than one copy of the multicast packet traverses any given link. Multicasting means delivering to a specified set of addresses, preferably by some mechanism more efficient than sending to each address individually.
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