ngrok API client library for .NET

This library wraps the ngrok HTTP API to make it easier to consume in C# and .NET.

Installation

This library is published on nuget

dotnet add package NgrokApi --version <version>

Support

The best place to get support using this library is through the ngrok Slack Community. If you find any bugs, please contribute by opening a new GitHub issue.

Documentation

All objects, methods and properties are documented with the .NET documentation markup tags for integration with an IDE like Visual Studio or Visual Studio Code.

Beyond that, this readme is the best source of documentation for the library. There is no API reference documentation published on the web at this time.

Versioning

This class library is published to Nuget using semantic versioning. Breaking changes to the API will only be release with a bump of the major version number. Each released commit is tagged in this repository.

No compatibility promises are made for versions < 1.0.0.

Quickstart

Create an IP Policy that allows traffic from some subnets

using NgrokApi;

public class Example
{
    public static async Task Main()
    {
        var ngrok = new Ngrok(Environment.GetEnvironmentVariable("NGROK_API_KEY"));
        var policy = await ngrok.IpPolicies.Create(new IpPolicyCreate());

        foreach (var cidr in new string[] { "24.0.0.0/8", "12.0.0.0/8" })
        {
            await ngrok.IpPolicyRules.Create(new IpPolicyRuleCreate
            {
                Cidr = cidr,
                IpPolicyId = policy.Id,
                Action = "allow",
            });
        }
    }
}

List all online tunnels

using NgrokApi;

public class Example
{
    public static async Task Main()
    {
        var ngrok = new Ngrok(Environment.GetEnvironmentVariable("NGROK_API_KEY"));
        await foreach (var t in ngrok.Tunnels.List())
        {
            Console.Out.WriteLine(t.ToString());
        }
    }
}

Conventions

Conventional usage of this package is to construct the root Ngrok API client object with an API key and then to access API resources as properties of that object. Do not construct the individual API resource Client classes in your application code.

// create the root api client
var ngrok = new Ngrok(apiKey);

// clients for all api resources (like ip policies) are acccessible as properties of the root client
var policy = await ngrok.IpPolicies.Get(policyId);

// some api resources are 'namespaced' through another property
var compression = await ngrok.EdgeModules.HttpsEdgeRouteCompression.Get(edgeRouteItem);

Automatic Paging

All list responses from the ngrok API are paged. This library provides an abstraction to make it easier to consume theses paged list resources. Instead of returning the page of results, all List() methods instead return an IAsyncEnumerable that can be iterated over with a foreach loop. The iterator will automatically fetch new pages of results from the API as needed.

using NgrokApi;

public class Example
{
    public static async Task Main()
    {
        var ngrok = new Ngrok(Environment.GetEnvironmentVariable("NGROK_API_KEY"));
        await foreach (var t in ngrok.Tunnels.List())
        {
            Console.Out.WriteLine(t.ToString());
        }
    }
}

Error Handling

All errors returned by the ngrok API are serialized as structured payloads for easy error handling. If a structured error is returned by the ngrok API, this library will throw an NgrokException.

To handle a structured error from the API, catch the NgrokException type in your code. This object will allow you to check the unique ngrok error code and the http status code of a failed response. Use the ErrorCode property to check for unique ngrok error codes returned by the API. All error codes are documented at https://ngrok.com/docs/errors. There is also an IsErrorCode() method on the exception object to check against multiple error codes. The HttpStatusCode property can be used to check not found errors.

Other non-structured errors encountered while making an API call from e.g. networking or serialization failures are not wrapped in any way and will bubble up as normal.

using NgrokApi;

public class Example
{
    public static async Task Main()
    {
        try
        {
            var ngrok = new Ngrok(Environment.GetEnvironmentVariable("NGROK_API_KEY"));
            var domain = await ngrok.ReservedDomains.Create(new ReservedDomainCreate()
            {
                Name = "foo.*.bar.ngrok.io",
                Description = "example domain",
            });
        }
        catch (NgrokException e)
        {
            if (e.IsErrorCode("ERR_NGROK_402", "ERR_NGROK_403"))
            {
                Console.Out.WriteLine("Ignoring invalid wildcard domain.");
            }
            else
            {
                throw;
            }
        }
    }
}

Datatype Overrides

All datatype objects in the NgrokApi library property override Equal() and GetHashCode() so that the objects can be compared. Similarly, they override ToString() for more helpful pretty printing of ngrok domain objects.

Sync / Async Interfaces

All library interfaces are async. Another version of the library will follow up with separate side-by-side synchronous interfaces before reaching 1.0.0.