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Questions tagged [multicast]

Multicast refers to one-to-many network transmission options, where packets will be automatically propagated just to those nodes wishing to receive them. IP-based multicast is the common case, though other multicast implementations exist.

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Multicast not working at Windows 10 PC. How to Enable multicast at Local LAN at Windows 10

I can multicast at 224.0.0.1 and my all others local LAN PCs can listen the stream. But when I multicast at other multicast IP like: 224.0.0.130, no LAN PCs can listen that. Though I can get at wireshark in source PC.
Shah Jafar Ulla Hamidi
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User buffer size to receive multicast packets?

The below code is from Git. It joins a multicast group and receives packets. Here we loop and receive the data in a buffer called msgbuf: while (1) { char msgbuf[MSGBUFSIZE]; const int addrlen = sizeof(addr); const int nbytes =…
user997112
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Why is UDP Multicast Server not responding?

I am trying to implement basic UDP multicast client and server on Linux. The server, based on a message sent by the client, is supposed to reply with system parameters (kinda like SNMP). Right now, I am testing with a single server. After running…
psk1993
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Is multicasting possible with gRPC? if yes how to do it in python or c++?

I am trying to connect multiple clients to the server where all the connected clients get the same data from the server. Something like the clients can subscribe to a service and get the same data from the server. I have tried connecting multiple…
Aadesh Shah
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No ping to a multicast address from Windows

On my computer, when I try to ping to a multicast address, none of them return a response. On the other hand, there is a Unix server I know that does have ping to these addresses. Is there a way to add a route from my computer to this one, so that I…
ComPTALot
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UDP Multicast not receiving data

I'm trying to write a simple client to receive multicast data. I've tried many different iterations and none of them work. The environment that I am using is .netcore 2.2.2 and in a linux environment. I can see that the data is being sent to the…
ahychu
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Does Java NIO support broadcast or multicast?

I am searching if Java NIO implements broadcast. I need to create a peer that sends messages to other peers, using multicast or broadcast. I was searching in the API 1.6, but I don't find anything in the DatagramChannel class. Thanks in advance.
adinu
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Multicast & Instant Apps

Usually I can use a MulticastSocket or a network service discovery to find a server over a Wi-Fi network try (MulticastSocket multicastSocket = new MulticastSocket(Network.DISCOVERY_PORT)) { …
Greelings
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How to make setsockopt IP_ADD_MEMBERSHIP honor the local interface address to receive multicast packets on only one specific interface?

Question How to make setsockopt IP_ADD_MEMBERSHIP honor the local interface address to receive multicast packets on only one specific interface? Summary In a single Python process, I create three receive sockets (sockets S1, S2, and S3). Each socket…
Bruno Rijsman
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On-demand video streaming

I'm currently researching different streaming methods both for live and on-demand streaming. I've read about both multicast and unicast, and now I got the following question, which I can not find an answer to. "Is it possible to make on-demand…
ChosSimbaOne
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DDS configuration with multicast and unicast

I am still trying to understand DDS and its concepts. I have a configuration where 2 laptops run dds based application. My environment does not permit multicast so I decided to go for peer to peer connection(unicast). To bring both the laptops in…
Vishal Rawat
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How to support multicast network in Docker

I've met a big problem about the network configuration in docker. The senario is this: 1.I have two eth on my serve : eth0 and eth1: eth0: flags=4163 mtu 1500 inet 172.17.198.172 netmask 255.255.255.0 broadcast…
Kisen.Chin
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What Could Cause Software to Run Slower on Better Hardware?

I have a Java OSGi (Apache Felix) application running on RHEL 7.4 which reads multicast UDP at ~975 packets/second (1038 octets in length). It then translates the data into XML, simulates going across a boundary device, and translates it back into…
Rob Paisley
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Multicast in java

I am trying to write a simple multicast trial. I used a standard code (sender and reciever). I tried a few different standard pieces of code. it appears that the receiving code is stuck on receive (as if it's not receving anything). receive side: …
thinkQuiteALot
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not seeing UDP multicast messages from another device

I have a Windows machine where I have two scripts that send and receive messages via UDP multicast (on the same machine). I have a C and Python3 implementation of this. The Python3 one looks like this: sender.py import socket MCAST_GRP =…
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