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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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binding UDP socket to multiple ports

Can I bind UDP socket on multiple ports? I know answer can be NO, but I need this. I have more than one UDP (multicast) streams on different ports to receive, and I want order of receiving packets between different streams to be same order packets…
nullptr
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java multiple threads taking turn

I have 2 java threads receiving UDP multicast. Each thread will receive UDP packets from different multicast streams of say around 60 Mbps, then processes UDP packets and queues in shared BlockingQueue. UDP packets are of around 1300 bytes. I want…
nullptr
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.NET Alternatives to UDP Multicast

I am looking for an alternative to using UDP multicast on the .NET Framework and am looking for suggestions. I need to send messages to several web servers running quite a few ASP.NET applications. These messages would be one-way only, coming from…
Brian Vallelunga
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How can we send mail (using SMTP which in turn uses TCP) to more than one client?

It has been written in the book Computer Networking - A Top Down Approach by James F. Kurose and Keith W. Ross (5th Edition) that : Multicasting - the transfer of data from one sender to many receivers in a single send operation - is not possible…
crisron
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listening to selective mcast groups on a port

For an concrete example lets assume that there are 2 mcast IPs (ip1, ip2) on same port port. I want to run two different processes, one listening to ip1 (and not ip2) and other listening to ip2(and not ip1). So I called bind with (ip1,port), and…
user3036846
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same server listening on different sockets

I have a UDP multicast server listening on 2 sockets on 2 different ports. I achieved listening on these 2 sockets from clients. But i want to identify on which socket a client is sending a packet. Since my problem is that ; on the server if I…
sohanarg34
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Multicast listening on same host and port in C

I have a program that listens for multicasts and I'd like it to be able to share a port with other instances of the same program, so that if I have 3 instances running on the same host, they can all share the same port. Is it possible to do this,…
wolf
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qudpsocket multicast root privileges

I've written a simple udp multicast server using QUdpSocket but the writedatagram function only works if I run the app with root privileges. Is this normal? It's a pain. Plus iperf (for example) seems to work without root privileges. What am I doing…
kingrolo
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Traffic forwarding

I have an application that sends HTTP GET requests and receives answers from some web server. Is it possible to accomplish following: read the incoming data on on wire on port 80 using Linux commands (no code) and forward it to multicast group or…
R_N
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Asterisk Multicast (SIP)

How can I setup asterisk to dialog with sip devices using the Multicast transmission protocol ? Basically I have an asterisk box conected to a VSAT network. On the other end I have a SIP box in a network receiving the signal from the other VSAT.…
danflu
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Is it OK to send join message again on multicast when you have already joined the network?

My program will take a list of multicast addresses and will join those multicast groups. Later on, the list of addresses may include new multicast addresses. Existing multicast addresses won't be deleted. As a requirement for my program, I cannot…
Jenner
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Multicast in java without requiring destination hosts to join the group

It may be a silly question, I don't know whether it is possible or not. For examples if I have 4 servers, A, B, C and D. In the examples that I founded on the internet. If host A wants to send messages to C and D, A has to join the group, and so do…
Xitrum
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MSMQ Send multicast message to remote server

We have MSMQ on ServerA & ServerB, along with two services on each. We want both of the services to send message to the multicast queues on ServerA (many queues that have the same multicast address, so when one message is sent it appears in all…
veljkoz
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Could not be performed exception using a socket to do a UDP Multicast

When running a C# app I created on XP it runs just fine, but under Windows 7, I get the following error: "An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full" I am doing the…
Kelly
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TCL script cannot configure multicast socket

I'm working with tcl script under ubuntu 12.04, and I'm facing some problem when I try to configure a multicast socket. What I'm trying to do is to forward traffic from some socket to a multicast one, but I don't know why although the multicast…
ndarkness
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