MTConnect.NET-HTTP 5.4.4

MTConnect Http REST Clients

These client classes use the Http REST Api that is described in MTConnect Standard.

MTConnectHttpClient

The MTConnectHttpClient class is the primary class to use when wanting to implement the full MTConnect REST protocol. This class handles an initial Probe request to gather capabilities of the Agent, a Current request to read the initial values, and a Sample request (at the specified Interval) to read successive values.

Class Initialization

Class initialization is straightforward in that specifiying the BaseUrl (the URL of the Agent) is all that is required. Then call the Start() method to start the request sequence.

No Device Name (Get All Devices)

using MTConnect.Clients;

var baseUrl = "localhost:5000";

var client = new MTConnectHttpClient(baseUrl);
client.Interval = 500;
client.Start();

Get Specific Device by Name

using MTConnect.Clients;

var baseUrl = "localhost:5000";
var deviceName = "OKUMA-Lathe";

var client = new MTConnectHttpClient(baseUrl, deviceName);
client.Interval = 500;
client.Start();

Specfiy Hostname and Port

using MTConnect.Clients;

var hostname = "localhost";
var port = 5000;

var client = new MTConnectHttpClient(hostname, port);
client.Interval = 500;
client.Start();

Specfiy Hostname, Port, and Device

using MTConnect.Clients;

var hostname = "localhost";
var port = 5000;
var deviceName = "OKUMA.Lathe";

var client = new MTConnectHttpClient(hostname, port, deviceName);
client.Interval = 500;
client.Start();

Properties

• Id - A unique Identifier used to indentify this instance of the MTConnectClient class

• Authority - The authority portion consists of the DNS name or IP address associated with an Agent

• Device - If present, specifies that only the Equipment Metadata for the piece of equipment represented by the name or uuid will be published

• DocumentFormat - Gets or Sets the Document Format to use (ex. XML, JSON, etc.)

• Interval - Gets or Sets the Interval in Milliseconds for the Sample Stream

• Timeout - Gets or Sets the connection timeout for the request

• Heartbeat - Gets or Sets the MTConnect Agent Heartbeat for the request

• RetryInterval - Gets or Sets the Interval in Milliseconds that the Client will attempt to reconnect if the connection fails

• MaximumSampleCount - Gets or Sets the Maximum Number of Samples returned per interval from the Sample Stream

• ContentEncodings - Gets or Sets the List of Encodings (ex. gzip, br, deflate) to pass to the Accept-Encoding HTTP Header

• ContentType - Gets or Sets the Content-type (or MIME-type) to pass to the Accept HTTP Header

• LastInstanceId - Gets the Last Instance ID read from the MTConnect Agent

• LastSequence - Gets the Last Sequence read from the MTConnect Agent

• LastResponse - Gets the Unix Timestamp (in Milliseconds) since the last response from the MTConnect Agent

• CurrentOnly - Gets or Sets whether the stream requests a Current (true) or a Sample (false)

Handle Probe Received Event

(MTConnectDevices Response Document received from a Probe Request)

var baseUrl = "localhost:5000";
var deviceName = "OKUMA-Lathe";

var client = new MTConnectHttpClient(baseUrl, deviceName);
client.OnProbeReceived += (sender, document) =>
{
    foreach (var device in document.Devices)
    {
        // Device
        Console.WriteLine(device.Id);

        // All DataItems (traverse the entire Device model)
        foreach (var dataItem in device.GetDataItems())
        {
            Console.WriteLine(dataItem.IdPath);
        }

        // All Components (traverse the entire Device model)
        foreach (var component in device.GetComponents())
        {
            Console.WriteLine(component.IdPath);
        }

        // All Compositions (traverse the entire Device model)
        foreach (var composition in device.GetCompositions())
        {
            Console.WriteLine(composition.IdPath);
        }
    }
};
client.Start();

Handle Current Received Event

(MTConnectStreams Response Document received from a Current Request)

var baseUrl = "localhost:5000";
var deviceName = "OKUMA-Lathe";

var client = new MTConnectHttpClient(baseUrl, deviceName);
client.OnCurrentReceived += (sender, document) =>
{
    foreach (var deviceStream in document.Streams)
    {
        // DeviceStream
        Console.WriteLine(deviceStream.Name);

        // Component Streams
        foreach (var componentStream in deviceStream.ComponentStreams)
        {
            Console.WriteLine(componentStream.Name);

            // DataItems (Samples, Events, and Conditions)
            foreach (var observation in componentStream.Observations)
            {
                Console.WriteLine(observation.DataItemId);
            }
        }
    }
};
client.Start();

Handle Samples Received Event

(MTConnectStreams Response Document received from a Sample Stream)

var baseUrl = "localhost:5000";
var deviceName = "OKUMA-Lathe";

var client = new MTConnectHttpClient(baseUrl, deviceName);
client.Interval = 500;
client.OnSampleReceived += (sender, document) =>
{
    foreach (var deviceStream in document.Streams)
    {
        // DeviceStream
        Console.WriteLine(deviceStream.Name);

        // Component Streams
        foreach (var componentStream in deviceStream.ComponentStreams)
        {
            Console.WriteLine(componentStream.Name);

            // DataItems (Samples, Events, and Conditions)
            foreach (var observation in componentStream.Observations)
            {
                Console.WriteLine(observation.DataItemId);
            }
        }
    }
};
client.Start();

Handle Assets Received Event

(MTConnectAssets Response Document received from an Asset Request)

var baseUrl = "localhost:5000";
var deviceName = "OKUMA-Lathe";

var client = new MTConnectHttpClient(baseUrl, deviceName);
client.Interval = 500;
client.OnAssetsReceived += (sender, document) =>
{
    foreach (var asset in document.Assets)
    {
        // Print AssetId to the Console
        Console.WriteLine(asset.AssetId);
    }
};
client.Start();

MTConnectHttpProbeClient

The MTConnectHttpProbeClient class is used to send a Probe request and return an MTConnectDevices Response Document.

var baseUrl = "localhost:5000";
var deviceName = "OKUMA.Lathe";

var client = new MTConnectHttpProbeClient(baseUrl, deviceName);
var document = client.Get();
foreach (var device in document.Devices)
{
    // Device
    Console.WriteLine(device.Id);

    // All DataItems (traverse the entire Device model)
    foreach (var dataItem in device.GetDataItems())
    {
        Console.WriteLine(dataItem.IdPath);
    }

    // All Components (traverse the entire Device model)
    foreach (var component in device.GetComponents())
    {
        Console.WriteLine(component.IdPath);
    }

    // All Compositions (traverse the entire Device model)
    foreach (var composition in device.GetCompositions())
    {
        Console.WriteLine(composition.IdPath);
    }
}

MTConnectHttpCurrentClient

The MTConnectHttpCurrentClient class is used to send a Current request and return an MTConnectStreams Response Document.

var baseUrl = "localhost:5000";
var deviceName = "OKUMA.Lathe";

var client = new MTConnectHttpCurrentClient(baseUrl, deviceName);
var document = client.Get();
foreach (var deviceStream in document.Streams)
{
    // Device
    Console.WriteLine(deviceStream.Name);

    // Component Streams
    foreach (var componentStream in deviceStream.ComponentStreams)
    {
        Console.WriteLine(componentStream.Name);

        // DataItems (Samples, Events, and Conditions)
        foreach (var observation in componentStream.Observations)
        {
            Console.WriteLine(observation.DataItemId);
        }
    }
}

MTConnectHttpSampleClient

The MTConnectHttpSampleClient class is used to send a Sample request and return an MTConnectStreams Response Document.

var baseUrl = "localhost:5000";
var deviceName = "OKUMA.Lathe";
var fromSequence = 150;
var toSequence = 250;

var client = new MTConnectHttpSampleClient(baseUrl, deviceName, fromSequence, toSequence);
var document = client.Get();
foreach (var deviceStream in document.Streams)
{
    // Device
    Console.WriteLine(deviceStream.Name);

    // Component Streams
    foreach (var componentStream in deviceStream.ComponentStreams)
    {
        Console.WriteLine(componentStream.Name);

        // DataItems (Samples, Events, and Conditions)
        foreach (var observation in componentStream.Observations)
        {
            Console.WriteLine(observation.DataItemId);
        }
    }
}

MTConnectHttpAssetClient

The MTConnectHttpAssetClient class is used to send an Assets request and return an MTConnectAssets Response Document.

var baseUrl = "localhost:5000";
var deviceName = "OKUMA.Lathe";
var count = 5

var client = new MTConnectHttpAssetClient(baseUrl, deviceName, count);
var document = client.Get();
foreach (var asset in document.Assets)
{
    // Print AssetId to the Console
    Console.WriteLine(asset.AssetId);
}