NATS

NATS is a simple, secure and performant communications system for digital systems, services and devices. NATS is part of the Cloud Native Computing Foundation (CNCF).

Warning

Versions of CAP below 5.2.0 are implement based on Request/Response mode, and now we are based on JetStream implementation. see https://github.com/dotnetcore/CAP/issues/983 for more information.

Configuration

To use NATS transporter, you need to install the following package from NuGet:

PM> Install-Package DotNetCore.CAP.NATS

Then you can add configuration items to the ConfigureServices method of Startup.cs.

public void ConfigureServices(IServiceCollection services)
{
    services.AddCap(capOptions =>
    {
        capOptions.UseNATS(natsOptions=>{
            //NATS Options
        });
    });
}

NATS Options

NATS configuration parameters provided directly by the CAP:

NAME	DESCRIPTION	TYPE	DEFAULT
Options	NATS client configuration	Options	Options
Servers	Server url/urls used to connect to the NATs server.	string	NULL
ConnectionPoolSize	number of connections pool	uint	10
DeliverPolicy	The point in the stream to receive messages from (⚠️ Removed from version 8.1.0, use ConsumerOptions instead.)	enum	DeliverPolicy.New
StreamOptions	🆕 Stream configuration	Action	NULL
ConsumerOptions	🆕 Consumer configuration	Action	NULL

NATS ConfigurationOptions

If you need more native NATS related configuration options, you can set them in the Options option:

services.AddCap(capOptions => 
{
    capOptions.UseNATS(natsOptions=>
    {
        // NATS options.
        natsOptions.Options.Url="";
    });
});

Options is a NATS.Client ConfigurationOptions , you can find more details through this link