Version 1.32

Fixed bug with periodically absence a confirmation message.

README.md

@@ -5,10 +5,10 @@ A simple library for creating ESP-NOW based Mesh network for ESP8266/ESP32.
 ## Features
 
 1. The maximum size of transmitted data is 200 bytes. Currently only unencrypted messages.
-2. All nodes are not visible to the network scanner (for the ESP_NOW mode only).
+2. All nodes are not visible to the network scanner.
 3. Not required a pre-pairings for data transfer.
 4. Broadcast or unicast data transmission.
-5. There are no periodic/synchronous messages on the network. All devices are in "silent mode" and do not "hum" into the air (for the ESP_NOW mode only).
+5. There are no periodic/synchronous messages on the network. All devices are in "silent mode" and do not "hum" into the air.
 6. Each node has its own independent routing table, updated only as needed.
 7. Each node will receive/send a message if it "sees" at least one device on the network.
 8. The number of devices on the network and the area of use is not limited (hypothetically). :-)
@@ -22,6 +22,11 @@ A simple library for creating ESP-NOW based Mesh network for ESP8266/ESP32.
 5. Voila. ;-)
 6. P.S. Uncomment #define PRINT_LOG in ZHNetwork.h for display to serial port the full operation log.
 
+## Notes
+
+1. Possibility uses WiFi AP or STA modes at the same time with ESP-NOW using the standard libraries.
+2. For correct work at ESP-NOW + STA mode your WiFi router must be set on channel 1 and set gateway mode.
+
 ## Function descriptions
 
 ### Sets the callback function for processing a received broadcast message
@@ -54,82 +59,35 @@ Note. Called only at broadcast or unicast with confirm message. Status will alwa
 
 ```cpp
 myNet.setOnConfirmReceivingCallback(onConfirmReceiving);
-void onConfirmReceiving(const uint8_t *target, const bool status)
+void onConfirmReceiving(const uint8_t *target, const uint16_t id, const bool status)
 {
     // Do something when receiving a delivery/undelivery confirm message.
 }
 ```
 
-### Sets one of the three possibility operating modes
-
-* ESP_NOW. Default mode. ESP-NOW Mesh network only.
-* ESP_NOW_AP. ESP-NOW Mesh network + access point.
-* ESP_NOW_STA. ESP-NOW Mesh network + connect to your WiFi router.
-
-Attention! For correct work on ESP_NOW_STA mode at ESP8266 your WiFi router must be set on channel 1.
-
-```cpp
-myNet.setWorkMode(ESP_NOW);
-```
-
-### Gets used operating mode
-
-```cpp
-myNet.getWorkMode();
-```
-
-### Sets ESP-NOW Mesh network name
+### ESP-NOW Mesh network initialization
 
 1-20 characters.
 
 Note. If network name not set node will work with all ESP-NOW networks. If set node will work with only one network.
 
 ```cpp
-myNet.setNetName("ZHNetwork");
-```
-
-### Gets used ESP-NOW Mesh network name
-
-```cpp
-myNet.getNetName();
-```
-
-### Sets WiFi ssid and password for ESP_NOW_STA mode
-
-Note. Must be called before Mesh network initialization.
-
-```cpp
-myNet.setStaSetting("SSID", "PASSWORD");
-```
-
-### Sets access point ssid and password for ESP_NOW_AP mode
-
-Note. Must be called before Mesh network initialization.
-
-```cpp
-myNet.setApSetting("SSID", "PASSWORD");
-```
-
-### ESP-NOW Mesh network initialization
-
-```cpp
-myNet.begin();
-```
-
-### ESP-NOW Mesh network deinitialization
-
-```cpp
-myNet.stop();
+myNet.begin("ZHNetwork");
+myNet.begin("ZHNetwork", true); // Gateway mode.
 ```
 
 ### Sends broadcast message to all nodes
 
+Returns message ID.
+
 ```cpp
 myNet.sendBroadcastMessage("Hello world!");
 ```
 
 ### Sends unicast message to node
 
+Returns message ID.
+
 ```cpp
 myNet.sendUnicastMessage("Hello world!", target); // Without confirm.
 myNet.sendUnicastMessage("Hello world!", target, true); // With confirm.
@@ -149,12 +107,6 @@ myNet.maintenance();
 myNet.getNodeMac();
 ```
 
-### Gets node IP address
-
-```cpp
-myNet.getNodeIp();
-```
-
 ### Gets version of this library
 
 ```cpp
@@ -223,11 +175,11 @@ myNet.getMaxWaitingTimeForRoutingInfo();
 
 void onBroadcastReceiving(const char *data, const uint8_t *sender);
 void onUnicastReceiving(const char *data, const uint8_t *sender);
-void onConfirmReceiving(const uint8_t *target, const bool status);
+void onConfirmReceiving(const uint8_t *target, const uint16_t id, const bool status);
 
 ZHNetwork myNet;
 
-uint64_t messagelastTime{0};
+uint64_t messageLastTime{0};
 uint16_t messageTimerDelay{5000};
 const uint8_t target[6]{0xA8, 0x48, 0xFA, 0xDC, 0x5B, 0xFA};
 
@@ -235,27 +187,12 @@ void setup()
 {
   Serial.begin(115200);
   Serial.println();
-  // *** ESP-NOW mode only.
-  myNet.setWorkMode(ESP_NOW);
-  // *** Or ESP-NOW + access point mode.
-  // myNet.setWorkMode(ESP_NOW_AP);
-  // myNet.setApSetting("ESP NODE TEST", "12345678");
-  // *** Or ESP-NOW + connect to your router mode.
-  // myNet.setWorkMode(ESP_NOW_STA);
-  // myNet.setStaSetting("SSID", "PASSWORD");
-  // ***
-  myNet.setNetName("ZHNetwork");                   // Optional.
-  myNet.setMaxNumberOfAttempts(3);                 // Optional.
-  myNet.setMaxWaitingTimeBetweenTransmissions(50); // Optional.
-  myNet.setMaxWaitingTimeForRoutingInfo(500);      // Optional.
-  myNet.begin();
+  myNet.begin("ZHNetwork");
   myNet.setOnBroadcastReceivingCallback(onBroadcastReceiving);
   myNet.setOnUnicastReceivingCallback(onUnicastReceiving);
   myNet.setOnConfirmReceivingCallback(onConfirmReceiving);
   Serial.print("MAC: ");
   Serial.print(myNet.getNodeMac());
-  Serial.print(". IP: ");
-  Serial.print(myNet.getNodeIp());
   Serial.print(". Firmware version: ");
   Serial.print(myNet.getFirmwareVersion());
   Serial.println(".");
@@ -263,19 +200,23 @@ void setup()
 
 void loop()
 {
-  if ((millis() - messagelastTime) > messageTimerDelay)
+  if ((millis() - messageLastTime) > messageTimerDelay)
   {
     Serial.println("Broadcast message sended.");
     myNet.sendBroadcastMessage("Hello world!");
+
     Serial.print("Unicast message to MAC ");
     Serial.print(myNet.macToString(target));
     Serial.println(" sended.");
     myNet.sendUnicastMessage("Hello world!", target);
+    
     Serial.print("Unicast with confirm message to MAC ");
     Serial.print(myNet.macToString(target));
+    Serial.print(" ID ");
+    Serial.print(myNet.sendUnicastMessage("Hello world!", target, true));
     Serial.println(" sended.");
-    myNet.sendUnicastMessage("Hello world!", target, true);
-    messagelastTime = millis();
+
+    messageLastTime = millis();
   }
   myNet.maintenance();
 }
@@ -297,10 +238,12 @@ void onUnicastReceiving(const char *data, const uint8_t *sender)
   Serial.println(data);
 }
 
-void onConfirmReceiving(const uint8_t *target, const bool status)
+void onConfirmReceiving(const uint8_t *target, const uint16_t id, const bool status)
 {
   Serial.print("Message to MAC ");
   Serial.print(myNet.macToString(target));
+  Serial.print(" ID ");
+  Serial.print(id);
   Serial.println(status ? " delivered." : " undelivered.");
 }
 ```

examples/Receiver/main.cpp

@@ -9,26 +9,11 @@ void setup()
 {
   Serial.begin(115200);
   Serial.println();
-  // *** ESP-NOW mode only.
-  myNet.setWorkMode(ESP_NOW);
-  // *** Or ESP-NOW + access point mode.
-  // myNet.setWorkMode(ESP_NOW_AP);
-  // myNet.setApSetting("ESP NODE TEST", "12345678");
-  // *** Or ESP-NOW + connect to your router mode.
-  // myNet.setWorkMode(ESP_NOW_STA);
-  // myNet.setStaSetting("SSID", "PASSWORD");
-  // ***
-  myNet.setNetName("ZHNetwork");                   // Optional.
-  myNet.setMaxNumberOfAttempts(3);                 // Optional.
-  myNet.setMaxWaitingTimeBetweenTransmissions(50); // Optional.
-  myNet.setMaxWaitingTimeForRoutingInfo(500);      // Optional.
-  myNet.begin();
+  myNet.begin("ZHNetwork");
   myNet.setOnBroadcastReceivingCallback(onBroadcastReceiving);
   myNet.setOnUnicastReceivingCallback(onUnicastReceiving);
   Serial.print("MAC: ");
   Serial.print(myNet.getNodeMac());
-  Serial.print(". IP: ");
-  Serial.print(myNet.getNodeIp());
   Serial.print(". Firmware version: ");
   Serial.print(myNet.getFirmwareVersion());
   Serial.println(".");

examples/Transmitter/main.cpp

@@ -1,10 +1,10 @@
 #include "ZHNetwork.h"
 
-void onConfirmReceiving(const uint8_t *target, const bool status);
+void onConfirmReceiving(const uint8_t *target, const uint16_t id, const bool status);
 
 ZHNetwork myNet;
 
-uint64_t messagelastTime{0};
+uint64_t messageLastTime{0};
 uint16_t messageTimerDelay{5000};
 const uint8_t target[6]{0xA8, 0x48, 0xFA, 0xDC, 0x5B, 0xFA};
 
@@ -12,25 +12,10 @@ void setup()
 {
   Serial.begin(115200);
   Serial.println();
-  // *** ESP-NOW mode only.
-  myNet.setWorkMode(ESP_NOW);
-  // *** Or ESP-NOW + access point mode.
-  // myNet.setWorkMode(ESP_NOW_AP);
-  // myNet.setApSetting("ESP NODE TEST", "12345678");
-  // *** Or ESP-NOW + connect to your router mode.
-  // myNet.setWorkMode(ESP_NOW_STA);
-  // myNet.setStaSetting("SSID", "PASSWORD");
-  // ***
-  myNet.setNetName("ZHNetwork");                   // Optional.
-  myNet.setMaxNumberOfAttempts(3);                 // Optional.
-  myNet.setMaxWaitingTimeBetweenTransmissions(50); // Optional.
-  myNet.setMaxWaitingTimeForRoutingInfo(500);      // Optional.
-  myNet.begin();
+  myNet.begin("ZHNetwork");
   myNet.setOnConfirmReceivingCallback(onConfirmReceiving);
   Serial.print("MAC: ");
   Serial.print(myNet.getNodeMac());
-  Serial.print(". IP: ");
-  Serial.print(myNet.getNodeIp());
   Serial.print(". Firmware version: ");
   Serial.print(myNet.getFirmwareVersion());
   Serial.println(".");
@@ -38,26 +23,32 @@ void setup()
 
 void loop()
 {
-  if ((millis() - messagelastTime) > messageTimerDelay)
+  if ((millis() - messageLastTime) > messageTimerDelay)
   {
     Serial.println("Broadcast message sended.");
     myNet.sendBroadcastMessage("Hello world!");
+
     Serial.print("Unicast message to MAC ");
     Serial.print(myNet.macToString(target));
     Serial.println(" sended.");
     myNet.sendUnicastMessage("Hello world!", target);
+    
     Serial.print("Unicast with confirm message to MAC ");
     Serial.print(myNet.macToString(target));
+    Serial.print(" ID ");
+    Serial.print(myNet.sendUnicastMessage("Hello world!", target, true));
     Serial.println(" sended.");
-    myNet.sendUnicastMessage("Hello world!", target, true);
-    messagelastTime = millis();
+
+    messageLastTime = millis();
   }
   myNet.maintenance();
 }
 
-void onConfirmReceiving(const uint8_t *target, const bool status)
+void onConfirmReceiving(const uint8_t *target, const uint16_t id, const bool status)
 {
   Serial.print("Message to MAC ");
   Serial.print(myNet.macToString(target));
+  Serial.print(" ID ");
+  Serial.print(id);
   Serial.println(status ? " delivered." : " undelivered.");
 }

library.properties

@@ -1,5 +1,5 @@
 name=ZHNetwork
-version=1.11
+version=1.32
 author=Alexey Zholtikov
 maintainer=Alexey Zholtikov
 sentence=ESP-NOW based Mesh network for ESP8266/ESP32

src/ZHNetwork.cpp

@@ -1,6 +1,7 @@
 #include "ZHNetwork.h"
 
 routing_vector_t ZHNetwork::routingVector;
+confirmation_vector_t ZHNetwork::confirmationVector;
 incoming_queue_t ZHNetwork::queueForIncomingData;
 outgoing_queue_t ZHNetwork::queueForOutgoingData;
 waiting_queue_t ZHNetwork::queueForRoutingVectorWaiting;
@@ -31,108 +32,36 @@ ZHNetwork &ZHNetwork::setOnConfirmReceivingCallback(on_confirm_t onConfirmReceiv
     return *this;
 }
 
-error_code_t ZHNetwork::setWorkMode(const work_mode_t workMode)
-{
-    if (workMode < ESP_NOW || workMode > ESP_NOW_STA)
-        return ERROR;
-    workMode_ = workMode;
-    return SUCCESS;
-}
-
-work_mode_t ZHNetwork::getWorkMode()
-{
-    return workMode_;
-}
-
-error_code_t ZHNetwork::setNetName(const char *netName)
-{
-    if (strlen(netName) < 1 || strlen(netName) > 20)
-        return ERROR;
-    strcpy(netName_, netName);
-    return SUCCESS;
-}
-
-String ZHNetwork::getNetName()
-{
-    return netName_;
-}
-
-error_code_t ZHNetwork::setStaSetting(const char *ssid, const char *password)
-{
-    if (strlen(ssid) < 1 || strlen(ssid) > 32 || strlen(password) > 64)
-        return ERROR;
-    strcpy(staSsid_, ssid);
-    strcpy(staPassword_, password);
-    return SUCCESS;
-}
-
-error_code_t ZHNetwork::setApSetting(const char *ssid, const char *password)
-{
-    if (strlen(ssid) < 1 || strlen(ssid) > 32 || strlen(password) < 8 || strlen(password) > 64)
-        return ERROR;
-    strcpy(apSsid_, ssid);
-    strcpy(apPassword_, password);
-    return SUCCESS;
-}
-
-error_code_t ZHNetwork::begin()
+error_code_t ZHNetwork::begin(const char *netName, const bool gateway)
 {
     randomSeed(analogRead(0));
+    if (strlen(netName) > 1 && strlen(netName) < 20)
+        strcpy(netName_, netName);
 #ifdef PRINT_LOG
     Serial.begin(115200);
 #endif
-    switch (workMode_)
-    {
-    case ESP_NOW:
-        WiFi.mode(WIFI_STA);
-        break;
-    case ESP_NOW_AP:
-        WiFi.mode(WIFI_AP_STA);
-        WiFi.softAP(apSsid_, apPassword_);
-        break;
-    case ESP_NOW_STA:
-        WiFi.mode(WIFI_STA);
-        WiFi.begin(staSsid_, staPassword_);
-        while (WiFi.status() != WL_CONNECTED)
-        {
-            if (WiFi.status() == WL_NO_SSID_AVAIL || WiFi.status() == WL_CONNECT_FAILED)
-                return ERROR;
-            delay(500);
-        }
-        break;
-    default:
-        break;
-    }
+    WiFi.mode(gateway ? WIFI_AP_STA : WIFI_STA);
     esp_now_init();
 #if defined(ESP8266)
-    wifi_get_macaddr(STATION_IF, localMAC);
+    wifi_get_macaddr(gateway ? SOFTAP_IF : STATION_IF, localMAC);
     esp_now_set_self_role(ESP_NOW_ROLE_COMBO);
 #endif
 #if defined(ESP32)
-    esp_wifi_get_mac((wifi_interface_t)ESP_IF_WIFI_STA, localMAC);
+    esp_wifi_get_mac(gateway ? (wifi_interface_t)ESP_IF_WIFI_AP : (wifi_interface_t)ESP_IF_WIFI_STA, localMAC);
 #endif
     esp_now_register_send_cb(onDataSent);
     esp_now_register_recv_cb(onDataReceive);
     return SUCCESS;
 }
 
-error_code_t stop()
+uint16_t ZHNetwork::sendBroadcastMessage(const char *data)
 {
-    WiFi.mode(WIFI_OFF);
-    esp_now_deinit();
-    esp_now_unregister_recv_cb();
-    esp_now_unregister_send_cb();
-    return SUCCESS;
+    return broadcastMessage(data, broadcastMAC, BROADCAST);
 }
 
-void ZHNetwork::sendBroadcastMessage(const char *data)
+uint16_t ZHNetwork::sendUnicastMessage(const char *data, const uint8_t *target, const bool confirm)
 {
-    broadcastMessage(data, broadcastMAC, BROADCAST);
-}
-
-void ZHNetwork::sendUnicastMessage(const char *data, const uint8_t *target, const bool confirm)
-{
-    unicastMessage(data, target, localMAC, confirm ? UNICAST_WITH_CONFIRM : UNICAST);
+    return unicastMessage(data, target, localMAC, confirm ? UNICAST_WITH_CONFIRM : UNICAST);
 }
 
 void ZHNetwork::maintenance()
@@ -152,7 +81,15 @@ void ZHNetwork::maintenance()
             esp_now_del_peer(outgoingData.intermediateTargetMAC);
 #endif
             if (onConfirmReceivingCallback && macToString(outgoingData.transmittedData.originalSenderMAC) == macToString(localMAC) && outgoingData.transmittedData.messageType == BROADCAST)
-                onConfirmReceivingCallback(outgoingData.transmittedData.originalTargetMAC, true);
+                onConfirmReceivingCallback(outgoingData.transmittedData.originalTargetMAC, outgoingData.transmittedData.messageID, true);
+            if (macToString(outgoingData.transmittedData.originalSenderMAC) == macToString(localMAC) && outgoingData.transmittedData.messageType == UNICAST_WITH_CONFIRM)
+            {
+                confirmation_waiting_data_t confirmationData;
+                confirmationData.time = millis();
+                memcpy(&confirmationData.targetMAC, &outgoingData.transmittedData.originalTargetMAC, 6);
+                memcpy(&confirmationData.messageID, &outgoingData.transmittedData.messageID, 2);
+                confirmationVector.push_back(confirmationData);
+            }
         }
         else
         {
@@ -290,7 +227,11 @@ void ZHNetwork::maintenance()
             {
                 if (onUnicastReceivingCallback)
                     onUnicastReceivingCallback(incomingData.transmittedData.message, incomingData.transmittedData.originalSenderMAC);
-                unicastMessage("", incomingData.transmittedData.originalSenderMAC, localMAC, DELIVERY_CONFIRM_RESPONSE);
+                confirmation_id_t id;
+                memcpy(&id.messageID, &incomingData.transmittedData.messageID, 2);
+                char temp[sizeof(transmitted_data_t::message)];
+                memcpy(&temp, &id, sizeof(transmitted_data_t::message));
+                unicastMessage(temp, incomingData.transmittedData.originalSenderMAC, localMAC, DELIVERY_CONFIRM_RESPONSE);
             }
             else
                 unicastMessage(incomingData.transmittedData.message, incomingData.transmittedData.originalTargetMAC, incomingData.transmittedData.originalSenderMAC, UNICAST_WITH_CONFIRM);
@@ -308,7 +249,17 @@ void ZHNetwork::maintenance()
             if (macToString(incomingData.transmittedData.originalTargetMAC) == macToString(localMAC))
             {
                 if (onConfirmReceivingCallback)
-                    onConfirmReceivingCallback(incomingData.transmittedData.originalSenderMAC, true);
+                {
+                    confirmation_id_t id;
+                    memcpy(&id.messageID, &incomingData.transmittedData.message, 2);
+                    for (uint16_t i{0}; i < confirmationVector.size(); ++i)
+                    {
+                        confirmation_waiting_data_t confirmationData = confirmationVector[i];
+                        if (confirmationData.messageID == id.messageID)
+                            confirmationVector.erase(confirmationVector.begin() + i);
+                    }
+                    onConfirmReceivingCallback(incomingData.transmittedData.originalSenderMAC, id.messageID, true);
+                }
             }
             else
                 unicastMessage(incomingData.transmittedData.message, incomingData.transmittedData.originalTargetMAC, incomingData.transmittedData.originalSenderMAC, DELIVERY_CONFIRM_RESPONSE);
@@ -446,7 +397,21 @@ void ZHNetwork::maintenance()
 #endif
             if (waitingData.transmittedData.messageType == UNICAST_WITH_CONFIRM && macToString(waitingData.transmittedData.originalSenderMAC) == macToString(localMAC))
                 if (onConfirmReceivingCallback)
-                    onConfirmReceivingCallback(waitingData.transmittedData.originalTargetMAC, false);
+                    onConfirmReceivingCallback(waitingData.transmittedData.originalTargetMAC, waitingData.transmittedData.messageID, false);
+        }
+    }
+    if (confirmationVector.size())
+    {
+        for (uint16_t i{0}; i < confirmationVector.size(); ++i)
+        {
+            confirmation_waiting_data_t confirmationData = confirmationVector[i];
+            if ((millis() - confirmationData.time) > 1000)
+            {
+                confirmationVector.erase(confirmationVector.begin() + i);
+                broadcastMessage("", confirmationData.targetMAC, SEARCH_REQUEST);
+                if (onConfirmReceivingCallback)
+                    onConfirmReceivingCallback(confirmationData.targetMAC, confirmationData.messageID, false);
+            }
         }
     }
 }
@@ -456,15 +421,6 @@ String ZHNetwork::getNodeMac()
     return macToString(localMAC);
 }
 
-IPAddress ZHNetwork::getNodeIp()
-{
-    if (workMode_ == ESP_NOW_AP)
-        return WiFi.softAPIP();
-    if (workMode_ == ESP_NOW_STA)
-        return WiFi.localIP();
-    return IPAddress(0, 0, 0, 0);
-}
-
 String ZHNetwork::getFirmwareVersion()
 {
     return firmware;
@@ -586,7 +542,7 @@ void IRAM_ATTR ZHNetwork::onDataReceive(uint8_t *mac, uint8_t *data, uint8_t len
     criticalProcessSemaphore = false;
 }
 
-void ZHNetwork::broadcastMessage(const char *data, const uint8_t *target, message_type_t type)
+uint16_t ZHNetwork::broadcastMessage(const char *data, const uint8_t *target, message_type_t type)
 {
     outgoing_data_t outgoingData;
     outgoingData.transmittedData.messageType = type;
@@ -618,9 +574,10 @@ void ZHNetwork::broadcastMessage(const char *data, const uint8_t *target, messag
     Serial.print(macToString(outgoingData.transmittedData.originalTargetMAC));
     Serial.println(F(" added to queue."));
 #endif
+    return outgoingData.transmittedData.messageID;
 }
 
-void ZHNetwork::unicastMessage(const char *data, const uint8_t *target, const uint8_t *sender, message_type_t type)
+uint16_t ZHNetwork::unicastMessage(const char *data, const uint8_t *target, const uint8_t *sender, message_type_t type)
 {
     outgoing_data_t outgoingData;
     outgoingData.transmittedData.messageType = type;
@@ -664,7 +621,7 @@ void ZHNetwork::unicastMessage(const char *data, const uint8_t *target, const ui
             Serial.print(macToString(outgoingData.intermediateTargetMAC));
             Serial.println(F(" added to queue."));
 #endif
-            return;
+            return outgoingData.transmittedData.messageID;
         }
     }
     memcpy(&outgoingData.intermediateTargetMAC, target, 6);
@@ -697,4 +654,5 @@ void ZHNetwork::unicastMessage(const char *data, const uint8_t *target, const ui
     Serial.print(macToString(outgoingData.intermediateTargetMAC));
     Serial.println(F(" added to queue."));
 #endif
+    return outgoingData.transmittedData.messageID;
 }

src/ZHNetwork.h

@@ -50,12 +50,18 @@ typedef struct
     uint8_t intermediateTargetMAC[6]{0};
 } routing_table_t;
 
-typedef enum
+typedef struct
 {
-    ESP_NOW = 1,
-    ESP_NOW_AP,
-    ESP_NOW_STA
-} work_mode_t;
+    uint16_t messageID{0};
+    char empty[198]{0}; // Just only to prevent compiler warnings.
+} confirmation_id_t;
+
+typedef struct
+{
+    uint64_t time{0};
+    uint8_t targetMAC[6]{0};
+    uint16_t messageID{0};
+} confirmation_waiting_data_t;
 
 typedef enum
 {
@@ -74,8 +80,9 @@ typedef enum // Just for further development.
 } error_code_t;
 
 typedef std::function<void(const char *, const uint8_t *)> on_message_t;
-typedef std::function<void(const uint8_t *, const bool)> on_confirm_t;
+typedef std::function<void(const uint8_t *, const uint16_t, const bool)> on_confirm_t;
 typedef std::vector<routing_table_t> routing_vector_t;
+typedef std::vector<confirmation_waiting_data_t> confirmation_vector_t;
 typedef std::queue<outgoing_data_t> outgoing_queue_t;
 typedef std::queue<incoming_data_t> incoming_queue_t;
 typedef std::queue<waiting_data_t> waiting_queue_t;
@@ -87,25 +94,14 @@ public:
     ZHNetwork &setOnUnicastReceivingCallback(on_message_t onUnicastReceivingCallback);
     ZHNetwork &setOnConfirmReceivingCallback(on_confirm_t onConfirmReceivingCallback);
 
-    error_code_t setWorkMode(const work_mode_t workMode);
-    work_mode_t getWorkMode(void);
+    error_code_t begin(const char *netName = "", const bool gateway = false);
 
-    error_code_t setNetName(const char *netName);
-    String getNetName(void);
-
-    error_code_t setStaSetting(const char *ssid, const char *password);
-    error_code_t setApSetting(const char *ssid, const char *password);
-
-    error_code_t begin(void);
-    error_code_t stop(void);
-
-    void sendBroadcastMessage(const char *data);
-    void sendUnicastMessage(const char *data, const uint8_t *target, const bool confirm = false);
+    uint16_t sendBroadcastMessage(const char *data);
+    uint16_t sendUnicastMessage(const char *data, const uint8_t *target, const bool confirm = false);
 
     void maintenance(void);
 
     String getNodeMac(void);
-    IPAddress getNodeIp(void);
     String getFirmwareVersion(void);
     String readErrorCode(error_code_t code); // Just for further development.
 
@@ -121,6 +117,7 @@ public:
 
 private:
     static routing_vector_t routingVector;
+    static confirmation_vector_t confirmationVector;
     static incoming_queue_t queueForIncomingData;
     static outgoing_queue_t queueForOutgoingData;
     static waiting_queue_t queueForRoutingVectorWaiting;
@@ -133,18 +130,13 @@ private:
     static uint16_t lastMessageID[10];
     static char netName_[20];
 
-    const char *firmware{"1.11"};
+    const char *firmware{"1.32"};
     const uint8_t broadcastMAC[6]{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
-    work_mode_t workMode_{ESP_NOW};
-    char apSsid_[32]{"ESP-NOW NODE"};
-    char apPassword_[64]{0};
-    char staSsid_[32]{0};
-    char staPassword_[64]{0};
     uint8_t maxNumberOfAttempts_{3};
     uint8_t maxWaitingTimeBetweenTransmissions_{50};
     uint8_t numberOfAttemptsToSend{1};
     uint16_t maxTimeForRoutingInfoWaiting_{500};
-    uint64_t lastMessageSentTime{0};
+    uint32_t lastMessageSentTime{0};
 
 #if defined(ESP8266)
     static void onDataSent(uint8_t *mac, uint8_t status);
@@ -154,8 +146,8 @@ private:
     static void onDataSent(const uint8_t *mac, esp_now_send_status_t status);
     static void onDataReceive(const uint8_t *mac, const uint8_t *data, int length);
 #endif
-    void broadcastMessage(const char *data, const uint8_t *target, message_type_t type);
-    void unicastMessage(const char *data, const uint8_t *target, const uint8_t *sender, message_type_t type);
+    uint16_t broadcastMessage(const char *data, const uint8_t *target, message_type_t type);
+    uint16_t unicastMessage(const char *data, const uint8_t *target, const uint8_t *sender, message_type_t type);
     on_message_t onBroadcastReceivingCallback;
     on_message_t onUnicastReceivingCallback;
     on_confirm_t onConfirmReceivingCallback;