public async Task TestUriConnectionWithAuthAsync()
{
var resolver = new MqttConnectionResolver();
resolver.Configure(ConfigParams.FromTuples(
"connection.uri", "tcp://*****:*****@server1:1883,server2:1883,server3:1883?param1=ABC"
));
var connection = await resolver.ResolveAsync(null);
Assert.Equal("server1:1883,server2:1883,server3:1883", connection.GetAsString("servers"));
Assert.Equal("test", connection.GetAsString("username"));
Assert.Equal("pass123", connection.GetAsString("password"));
}
public async Task TestSingleConnectionAsync()
{
var resolver = new MqttConnectionResolver();
resolver.Configure(ConfigParams.FromTuples(
"connection.protocol", "tcp",
"connection.host", "localhost",
"connection.port", 1883
));
var connection = await resolver.ResolveAsync(null);
Assert.Equal("localhost:1883", connection.GetAsString("servers"));
Assert.Null(connection.GetAsString("username"));
Assert.Null(connection.GetAsString("password"));
}
public async Task TestClusterConnectionAsync()
{
var resolver = new MqttConnectionResolver();
resolver.Configure(ConfigParams.FromTuples(
"connections.0.protocol", "tcp",
"connections.0.host", "server1",
"connections.0.port", 1883,
"connections.1.protocol", "tcp",
"connections.1.host", "server2",
"connections.1.port", 1883,
"connections.2.protocol", "tcp",
"connections.2.host", "server3",
"connections.2.port", 1883
));
var connection = await resolver.ResolveAsync(null);
Assert.Equal("server1:1883,server2:1883,server3:1883", connection.GetAsString("servers"));
Assert.Null(connection.GetAsString("username"));
Assert.Null(connection.GetAsString("password"));
}
/// <summary>
/// Opens the component.
/// </summary>
/// <param name="correlationId">(optional) transaction id to trace execution through call chain.</param>
public async Task OpenAsync(string correlationId)
{
var options = await _connectionResolver.ResolveAsync(correlationId);
var opts = new MqttClientOptionsBuilder()
.WithClientId(_clientId);
if (_keepAliveTimeout > 0)
{
opts.WithKeepAlivePeriod(TimeSpan.FromMilliseconds(_keepAliveTimeout));
}
else
{
opts.WithNoKeepAlive();
}
var uri = options.GetAsString("servers") ?? "";
var servers = uri.Split(',');
foreach (var server in servers)
{
var host = server;
var port = 1883;
var pos = server.IndexOf(":");
if (pos > 0)
{
host = server.Substring(0, pos);
Int32.TryParse(server.Substring(pos + 1), out port);
}
opts.WithTcpServer(host, port);
}
var username = options.GetAsString("username");
if (!string.IsNullOrEmpty(username))
{
var password = options.GetAsString("password");
opts.WithCredentials(username, password);
}
//opts.SetAutoReconnect(c.retryConnect)
//opts.SetConnectTimeout(time.Millisecond * time.Duration(c.connectTimeout))
//opts.SetConnectRetryInterval(time.Millisecond * time.Duration(c.reconnectTimeout))
var client = new MqttFactory().CreateMqttClient();
client.UseDisconnectedHandler(DisconnectedHandlerAsync);
client.UseApplicationMessageReceivedHandler(MessageReceiveHandlerAsync);
try
{
await client.ConnectAsync(opts.Build());
}
catch (Exception ex)
{
_logger.Error(correlationId, ex, "Failed to connect to MQTT broker at " + uri);
throw ex;
}
_connection = client;
_clientOptions = opts.Build();
_logger.Debug(correlationId, "Connected to MQTT broker at " + uri);
}
