Connect Method

Connects to the MQTTSN Gateway.

Syntax

public void Connect(string host, int port);
Public Sub Connect(ByVal Host As String, ByVal Port As Integer)

Remarks

This method connects to the MQTTSN Gateway by sending a CONNECT packet. Calling this method is equivalent to setting the RemoteHost property to Host, setting RemotePort to Port, and then setting the Connected property to True.

When connecting to an MQTT gateway, the component sends the following information:

Refer to CleanSession for more information about MQTT sessions; refer to WillTopic, WillMessage, WillQOS and WillRetain for more information about MQTT Wills.

Basic Connection Example

mqttsn1.ClientId = "testClient";
mqttsn1.CleanSession = true;
mqttsn1.KeepAliveInterval = 30;
mqttsn1.WillTopic = "wills/" + mqttsn1.ClientId;
mqttsn1.WillMessage = mqttsn1.ClientId + " was disconnected ungracefully!";
mqttsn1.Connect(host, port);

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IPWorks IoT 2020 .NET Edition - Version 20.0 [Build 8265]