multicast

I tried setting the Multicast host as 230.0.0.1 using the port 5500. Then, on the other side I said to join group 230.0.0.1 at port 5500. It joined and it received packets for a few seconds. Then it stops all of a sudden. If I use 255.255.255.255 it receives packets normally. Why is this happening? The code for the Multicast sender is below: private class StatusBroadcasterThread extends Thread { private static final boolean DEBUG = App.DEBUG; private static final String TAG = "StatusBroadcasterThread"; private DatagramSocket broadcastSocket; public StatusBroadcasterThread(int port) throws

Hello everyone, I'm working on a project with udp multicast. I have a server sending multicast udp packets via an ethernet cable. I have spent weeks of work reading all the posts about multicast on android and I still can't receive any udp packet on my Asus Transformer Tablet, 4.1. For some reasons, I can't put my code here, I will try to explain it carefully. I have a simple MainActivity displaying some stuff. Almost everything is n the Oncreate method, and so is the line where I call a method named UDPreceiver . This method is defined in a class named UDPreceiverClass . In UDPreceiver ,

I want to emulate multicast with socket.io I am used to BSD sockets where you save file descriptors in FD_SET, and iterate over them in an event loop to send() or write to them individually. If I can do the analogy in javascript, I will be golden:) Any ideas on how to store the "file descriptors" and then individually send() data to those descriptors with socket.io? thanks in advance! Any ideas on how to store the "file descriptors" and then individually send() data to those descriptors with socket.io? You could store the socket.io id and use that to send messages to individual connections. //

This question already has an answer here: Receiving multiple multicast feeds on the same port - C, Linux 8 answers There seems to be a bug in the following MulticastReceiver implementation. On creating two instances for <224.0.25.46,13001> and <224.0.25.172,13001>, I get each packet twice in each stream. Any pointers ? My guess is REUSEADDR ? class MulticastReceiverSocket { protected: const std::string listen_ip_; const int listen_port_; int socket_file_descriptor_; public: MulticastReceiverSocket ( const std::string & listen_ip, const int listen_port ) : listen_ip_ ( listen_ip ), listen_port_

This is a slightly obscure question, but I'm stumped and I thought maybe somebody out there might have more of a clue on the issue. My co-worker has been successfully running an in-house application that uses IPv6 multicasting on his MacBook Pro for several months, but today the Mac decided to stop routing the multicast packets. In particular, the program prints this error: SendDataUDP(ff02::bead:cede:deed:feed@4) failed on Network interface [Name=[en0] Description=[] IP=[fe80::222:41ff:fe21:dfd4@4] Netmask=[ffff:ffff:ffff:ffff::] Broadcast=[::]] (errno=65/No route to host). ... which pretty

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 7 years ago . I've recently become aware that there's a distinction between IP multicasting (which apparently doesn't work that well on the public internet) and application multicasting (which is apparently used in IRC and PSYC, per http://en.wikipedia.org/wiki/Multicast ). Is there a good tutorial on implementing application-level multicasting? I thought the whole point of multicast was to reduce bandwidth for

I may have a fundamental misunderstanding of the term binding here but I am confused about the usage of the MulticastSocket and it's constructors. They no not do what I understand they should do should do so any who can help me clear my misunderstanding would be appreciated. Firstly what I am trying to achieve. I have tried to write a short program that creates a MulticastSocket bind it (i.e. listen) on a specific network adapter and then join a specific Multicast group. I have tried the following (client) code which works ok, I can multicast a packet to it without the Multicast socket timing

I am trying to set up auto discovery using UDP multicasting, and am using some sample code from the internet. this seems to work ok when I run the client and the server on the same machine, but when I run them on different machines, either with a machine running in a VM on my machine (virtualBox) or on other 'real' machines on the network then the other machines never seem to receive the messages being broadcast. After some googling it seems the likely culprit would be the router (SpeedTouch 780) which might be dropping the packets. How can I check if this is the case? Are their other things