private void Frm_ObjectDetail_Load(object sender, EventArgs e)
{
Global_GUI.RestoreWindowState(this);
this.Show();
try
{
Global_GUI.ConfigureFOLV(this.folv_ObjectDetail, typeof(ClsPrediction), null, null);
Global_GUI.UpdateFOLV(this.folv_ObjectDetail, this.PredictionObjectDetails);
if (!String.IsNullOrEmpty(this.ImageFileName) && this.ImageFileName.Contains("\\") && File.Exists(this.ImageFileName))
{
OriginalBMP = new ClsImageQueueItem(this.ImageFileName, 0);
this.pictureBox1.Image = Image.FromStream(OriginalBMP.ToStream()); //load actual image as background, so that an overlay can be added as the image
}
}
catch (Exception)
{
throw;
}
}
public async Task <MqttClientPublishResult> PublishAsync(string topic, string payload, bool retain, ClsImageQueueItem CurImg)
{
using var Trace = new Trace(); //This c# 8.0 using feature will auto dispose when the function is done.
MqttClientPublishResult res = null;
Stopwatch sw = Stopwatch.StartNew();
this.LastRetain = retain;
this.LastPayload = payload;
this.LastTopic = topic;
if (string.IsNullOrWhiteSpace(topic))
{
this.LastTopic = Guid.NewGuid().ToString();
}
if (!this.IsConnected)
{
await this.Connect();
}
if (!this.IsConnected)
{
return(res);
}
await Task.Run(async() =>
{
try
{
Log($"Debug: MQTT: Sending topic '{this.LastTopic}' with payload '{this.LastPayload}' to server '{this.server}:{this.portint}'...");
if (cres != null && mqttClient.IsConnected && cres.ResultCode == MqttClientConnectResultCode.Success)
{
IsConnected = true;
MqttApplicationMessage ma;
if (CurImg != null)
{
//using FileStream image_data = System.IO.File.OpenRead(CurImg.image_path);
ma = new MqttApplicationMessageBuilder()
.WithTopic(this.LastTopic)
.WithPayload(CurImg.ToStream())
.WithAtLeastOnceQoS()
.WithRetainFlag(this.LastRetain)
.Build();
res = await mqttClient.PublishAsync(ma, CancellationToken.None);
if (res.ReasonCode == MqttClientPublishReasonCode.Success)
{
Log($"Debug: MQTT: ...Sent image in {sw.ElapsedMilliseconds}ms, Reason: '{res.ReasonCode}' ({Convert.ToInt32(res.ReasonCode)} - '{res.ReasonString}')");
}
else
{
Log($"Error: MQTT: sending image: ({sw.ElapsedMilliseconds}ms) Reason: '{res.ReasonCode}' ({Convert.ToInt32(res.ReasonCode)} - '{res.ReasonString}')");
}
}
else
{
ma = new MqttApplicationMessageBuilder()
.WithTopic(this.LastTopic)
.WithPayload(this.LastPayload)
.WithAtLeastOnceQoS()
.WithRetainFlag(this.LastRetain)
.Build();
res = await mqttClient.PublishAsync(ma, CancellationToken.None);
//Success = 0,
// NoMatchingSubscribers = 0x10,
// UnspecifiedError = 0x80,
// ImplementationSpecificError = 0x83,
// NotAuthorized = 0x87,
// TopicNameInvalid = 0x90,
// PacketIdentifierInUse = 0x91,
// QuotaExceeded = 0x97,
// PayloadFormatInvalid = 0x99
if (res.ReasonCode == MqttClientPublishReasonCode.Success)
{
Log($"Debug: MQTT: ...Sent in {sw.ElapsedMilliseconds}ms, Reason: '{res.ReasonCode}' ({Convert.ToInt32(res.ReasonCode)} - '{res.ReasonString}')");
}
else
{
Log($"Error: MQTT: sending: ({sw.ElapsedMilliseconds}ms) Reason: '{res.ReasonCode}' ({Convert.ToInt32(res.ReasonCode)} - '{res.ReasonString}')");
}
}
}
else if (cres != null)
{
IsConnected = false;
Log($"Error: MQTT: connecting: ({sw.ElapsedMilliseconds}ms) Result: '{cres.ResultCode}' - '{cres.ReasonString}'");
}
else
{
IsConnected = false;
Log($"Error: MQTT: Error connecting: ({sw.ElapsedMilliseconds}ms) cres=null");
}
}
catch (Exception ex)
{
Log($"Error: MQTT: Unexpected Problem: Topic '{this.LastTopic}' Payload '{this.LastPayload}': " + ex.Msg());
}
finally
{
}
});
return(res);
}