code

2025-07-14 22:24:27 +08:00
parent daacc18ecf
commit 4af19ef574
7722 changed files with 72086 additions and 0 deletions
--- a/Plugins/MqttClient/Source/DTMqtt/DTMqtt/DTMqttClient.h
+++ b/Plugins/MqttClient/Source/DTMqtt/DTMqtt/DTMqttClient.h
@ -0,0 +1,124 @@
+// Copyright 2023 Dexter.Wan. All Rights Reserved. 
+// EMail: 45141961@qq.com
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "DTMqttHead.h"
+#include "UObject/Object.h"
+#include "DTMqttClient.generated.h"
+
+UENUM()
+enum class EDT_QualityOfService  : uint8
+{
+	QoS0 = 0 UMETA(DisplayName = "QoS0", ToolTip = "At most once"),
+	QoS1 = 1 UMETA(DisplayName = "QoS1", ToolTip = "At least once"),
+	QoS2 = 2 UMETA(DisplayName = "QoS2", ToolTip = "Exactly once"),
+};
+
+
+/**
+ * Lightweight client for talking to an MQTT server using non-blocking
+ */
+UCLASS(BlueprintType, meta=(DisplayName="DT Mqtt Client"))
+class DTMQTT_API UDTMqttClient : public UObject, public mqtt::callback
+{
+	GENERATED_BODY()
+
+public:
+	DECLARE_DYNAMIC_DELEGATE_OneParam(FConnected,  const FString&, Cause);
+	DECLARE_DYNAMIC_DELEGATE_OneParam(FConnectionLost,  const FString&, Cause);
+	DECLARE_DYNAMIC_DELEGATE_TwoParams(FMessageArrived, const FString&, Topic, const FString&, Message);
+	
+public:
+	TSharedPtr<mqtt::async_client>			MqttClient;
+	mqtt::connect_options					ConnectOptions;
+
+public:
+	FConnected								OnConnected;
+	FConnectionLost							OnConnectionLost;
+	FMessageArrived							OnMessageArrived;
+	
+	// mqtt 回调接口
+public:
+	virtual void connected(const mqtt::string& cause) override;
+	virtual void connection_lost(const mqtt::string& cause) override;
+	virtual void message_arrived(mqtt::const_message_ptr msg) override;
+
+	// object 接口回调
+public:
+	virtual void FinishDestroy() override;
+
+public:
+	/**
+	 * Create an MQTT client object
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	static void CreateMqttClient(UDTMqttClient *& MqttClient);
+	
+	/**
+	 * Connects to an MQTT server using the provided connect options.
+	 * Param Url : the address of the server to connect to, specified
+	 *  				as a URI.
+	 * Param ClientId : a client identifier that is unique on the server
+	 *  			   being connected to
+	 * Param UserName : The user name for connecting to the MQTT broker.
+	 * Param Password : The password for connecting to the MQTT broker.
+	 */
+	UFUNCTION(BlueprintCallable, meta=(KeepAliveInterval=60), Category="DT Mqtt")
+	void Connect( const FString & ServerUrl, const FString & ClientId, const FString & UserName, const FString & Password, int KeepAliveInterval, bool & Success, FString & ErrorMsg );
+
+	/**
+	 * Subscribe to a topic, which may include wildcards.
+	 * Param TopicFilter : the topic to subscribe to, which can include
+	 *  				  wildcards.
+	 * Param QoS : The quality of service for the subscription
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void Subscribe( const FString & TopicFilter, EDT_QualityOfService QoS, bool & Success, FString & ErrorMsg );
+
+	/**
+	 * Requests the server unsubscribe the client from a topic.
+	 * Param TopicFilter : the topic to unsubscribe from. It must match a
+	 *  				  topicFilter specified on an earlier subscribe.
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void UnSubscribe( const FString & TopicFilter, bool & Success, FString & ErrorMsg );
+
+	/**
+	 * Publishes a message to a topic on the server
+	 * Param Topic : The topic to deliver the message to
+	 * Param Message : sent message
+	 * Param QoS : the Quality of Service to deliver the message at. Valid
+	 *  		  values are 0, 1 or 2.
+	 * Param Retained : whether or not this message should be retained by the
+	 *  			   server.
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void Publish( const FString & Topic, const FString & Message, EDT_QualityOfService QoS, bool Retained, bool & Success, FString & ErrorMsg );
+
+	/**
+	 * Disconnects from the server.
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void Disconnect(bool & Success, FString & ErrorMsg);
+	
+	/**
+	 * This method is called when the client is connected. 
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void BindConnectedDelegate(const FConnected Connected);
+
+	/**
+	 * This method is called when the connection to the server is lost.
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void BindConnectionLostDelegate(const FConnectionLost ConnectionLost);
+
+	/**
+	 * This method is called when a message arrives from the server.
+	 */
+	UFUNCTION(BlueprintCallable, Category="DT Mqtt")
+	void BindMessageDelegate(const FMessageArrived MessageArrived);
+};
+