Initialize IOTA repository

First, we need to initialize our main repository object. We can do that by typing:

var repository = IotaRepositoryFactory.Create("https://altnodes.devnet.iota.org");

Easy, right? Now we have our repository object that is going to take care of all the communication between us and the IRI.

Example of repository class methods

If you are connected to a known IRI and you are sure that the node is stable for most cases, connecting like this is just fine. But sometimes there are cases where you need to have a fall back mechanism in case the node you are connected to fails, goes offline or is not in sync with the rest of the network. A solution can be carried out as follows:

var IRI_Nodes = new List<string>() {
    "https://altnodes.devnet.iota.org",
    "https://nodes.devnet.thetangle.org:443/",
    "https://nodes.devnet.iota.org:443/",
};
var repository = IotaRepositoryFactory.CreateWithFallback(IRI_Nodes);

As you can see in the above picture, we have a list of IRIs instead of just a single one. In case a node times out (5 seconds by default) or is unresponsive, it will automatically try to connect to the next node. The behavior is similar to a circuit breaker.