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Questions tagged [unicast]

41 questions
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Should an IPv6 UDP socket that is set up to receive multicast packets also be able to receive unicast packets?

I've got a little client program that listens on an IPv6 multicast group (e.g. ff12::blah:blah%en0) for multicast packets that are sent out by a server. It works well. The server would also like to sometimes send a unicast packet to my client…
Jeremy Friesner
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Which Apple Networking Api to use for UDP multicasting and unicasting?

New to iOS development and networks in general. Developing a game-show-type app where a 'host' device needs to multicast to 'contestant' devices. The contestant devices also need to be able to respond. Very little information is actually being…
Luis Ayala
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Unicast in iOS devices

We have a Python and also a NodeJS codes that send mDNS responses in a network. These mDNS responses are sent to specific IP addresses (NOT to the MDNS IP address - 224.0.0.251). For eg. if the IP address of my phone is 192.168.10.125, the server…
Veera
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Bandwidth usage of unicast, multicast and broadcast transmissions

Basically, I know that Unicast is one to one, Multicast is one to many (the ones that requested the data) and Broadcast is one to all (whether they want the data or not). In unicast, a data is duplicated and sent one by one by the transmitter to all…
Jo.
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IPv6 - Neighbor Discovery Protocol - Neighbor Solicitation messages

I'm studing on this topic, and I learned that, when a node joins a network, it creates a local unicast address based on his MAC, then send a Neighbor Solicitation message to the multicast neighbor-solicited group of that address for detecting any…
Alex_DeLarge
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Contiki NG/Cooja - Non-RPL Simulation with No-Root Node

Can we simulate in Contiki-NG / Cooja a non-RPL sensor network where each node can directly communicate to any other node, without having to go through any root node?
Ambar Prajapati
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How to receive UDP Multicast and Unicast with Network Framework of iOS

I've been developing Smart House apps that require UDP communication of both Unicast and Multicast on iOS with Swift using CocoaAsyncSocket. I'd like to use Network Framework instead of CocoaAsyncSocket. I made a following trial program of receiving…
Hiro Fujita
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How to use linkaddr_set_node_addr (linkaddr_t *addr) in Contiki with Unicast

Iam trying to using this function to set the node which send packet to other node in code unicast contiki , but this function doesn't work , what's the problem ? Can you help me ,please ! I want to topo 2 node which require : If node 2 received…
Đức Giang
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bind() works for ipv6 wireless adapter interface but not for ipv6 ethernet (error 10049)

Background At the beginning of my program I build a linked list of adapter interface addresses using GetAdaptersAddresses. Later, after creating an ipv6 slaac address, calling Socket(), Bind() and Listen() all succeed where the IfType is Wireless,…
rtischer8277
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Unable to GetUnicastIpAddressEntry after CreateUnicastIpAddressEntry

Background: I am trying to get up to speed on using RFC7217 compliant ipv6 addresses. To that end I have written code that creates a valid route-able ipv6 address like 2600:8806:2700:115:c4a3:36d8:77e2:cd1e. I know I need to enter the new address…
rtischer8277
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How to verify that an address is unicast?

Given an IPv4 address, I can verify whether the address is multicast in C by using the IN_MULTICAST macro from netinet/in.h header file. Similarly, for IPv6 I can use the IN6_IS_ADDR_MULTICAST macro from netinet/in6.h. Is there any way to verify…
Daniel Lovasko
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Unicast mDNS response exemple

I'm looking for a packet capture showing a mDNS unicast response following an mDNS request with the Unicast-Response bit at 1 (QU) in the QUERY field I use Wireshark to capture a packet with QU bit to 0 and change it in an txt file, then I use Scapy…
Kevin Lous
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can't extraxt RTP Payload from RTP Packet

Hi I wanted to proxy multicast video to unicast like udpxy does: http://www.udpxy.com, but in C# since I could not find any suitable RTP library that I could use (they were eather too complex or I could't understand how to use them), I decided to…
PersonaNonGrata
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Elasticsearch Unicast Weird Behavior in Clustering

I have two nodes each of which forms a cluster (with one empty node). 0.0.0.0:9200 (elasticsearch) 0.0.0.0:9201 (test-1) Node at 9200 is in cluster elasticsearch (maybe default cluster.name). Node at 9201 is in cluster test-1. (Additionally,…
ghchoi
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Is multicasting necessary for DDS based communication?

I have a configuration where 3 applications run on 3 different Virtual Machine's and they must communicate via DDS i.e. RTPS protocol. The configuration is as follows : ROS2 based ADAS functions Simulation Tool Python/Tensorflow based machine…
Vishal Rawat
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