multihomed

Broadcasting UDP message to all the available network cards.

I need to send a UDP message to specific IP and Port. Since there are 3 network cards, 10.1.x.x 10.2.x.x 10.4.x.x when i send a UDP message,i am receiving the message only in one network adapter...the rest of the ip's are not receiving. I want to check for the network adapter while sending the message. How can I do that? Curren...

Problem Trying to unicast packets to available networks.

Trying to unicast packets to available networks. There are totally 3 networks. Managed to get packets in only one network.But i am not able to receive the packets in different networks. using this code.. foreach (var i in System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()) { foreach (v...

Does a UDP service have to respond from the connected IP address?

Pyzor uses UDP/IP as the communication protocol. We recently switched the public server to a new machine, and started getting reports of many timeouts. I discovered that I could fix the problem if I changed the IP that was queried from eth0:1 to eth0. I can reproduce this problem with a simple example: This is the server code: #! /u...

How to use multicast on a multi-homed system (Java, Linux)

This is in Java, but I can always revert to C via JNI if needed. I have a system with two NICs, each connected to a distinct subnet. I want to use multicast (in particular, SDP) to discover other hosts on both networks. One network is easy: create a MulticastSocket on the specified port, joinGroup it, and I get packets. Simplicity. Tw...

Receiving Multicast Messages on a Multihomed Windows PC

I'm developing a diagnostic tool on a PC with several Network Interfaces based on multicast/udp. The user can select a NIC, the application creates sockets, binds them to this NIC and adds them to the specific multicast group. The sending of multicast messages works fine. However receiving of messages only succeeds if I bind the sockets...

using winhttp to connect to a multihomed host when the first ip is bad.

im trying to confirm that the feature described here: http://msdn.microsoft.com/en-us/library/aa384066(VS.85).aspx WINHTTP_OPTION_CONNECT_RETRIES Sets or retrieves an unsigned long integer value that contains the number of times WinHTTP attempts to connect to a host. Microsoft Windows HTTP Services (WinHTTP) only attempt...