{"id":557,"date":"2023-09-04T12:11:59","date_gmt":"2023-09-04T03:11:59","guid":{"rendered":"https:\/\/blog.dozzing.kr\/?p=557"},"modified":"2025-10-15T16:02:56","modified_gmt":"2025-10-15T07:02:56","slug":"c-mqtt-%ed%86%b5%ec%8b%a0-%ed%81%b4%eb%9d%bc%ec%9d%b4%ec%96%b8%ed%8a%b8-%ec%98%88%ec%a0%9c","status":"publish","type":"post","link":"https:\/\/blog.dozzing.kr\/?p=557","title":{"rendered":"[C#] MQTT \ud1b5\uc2e0 \ud074\ub77c\uc774\uc5b8\ud2b8 \uc608\uc81c"},"content":{"rendered":"

\ud83d\udcab MQTT\ub780?<\/h2>\n

\"\"<\/a>
\nMQTT(\uba54\uc2dc\uc9c0 \ud050\uc789 \ud154\ub808\uba54\ud2b8\ub9ac \ud2b8\ub79c\uc2a4\ud3ec\ud2b8, Message Queuing Telemetry Transport)\ub294 ISO \ud45c\uc900(ISO\/IEC PRF 20922) \ubc1c\ud589-\uad6c\ub3c5 \uae30\ubc18\uc758 \uba54\uc2dc\uc9d5 \ud504\ub85c\ud1a0\ucf5c\uc774\ub2e4.
\nTCP\/IP \ud504\ub85c\ud1a0\ucf5c \uc704\uc5d0\uc11c \ub3d9\uc791\ud55c\ub2e4. \"\uc791\uc740 \ucf54\ub4dc \uacf5\uac04\"(small code footprint)\uc774 \ud544\uc694\ud558\uac70\ub098 \ub124\ud2b8\uc6cc\ud06c \ub300\uc5ed\ud3ed\uc774 \uc81c\ud55c\ub418\ub294 \uc6d0\uaca9 \uc704\uce58\uc640\uc758 \uc5f0\uacb0\uc744 \uc704\ud574 \uc124\uacc4\ub418\uc5b4 \uc788\ub2e4. \ubc1c\ud589-\uad6c\ub3c5 \uba54\uc2dc\uc9d5 \ud328\ud134\uc740 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uac00 \ud544\uc694\ud558\ub2e4.<\/p>\n

\u00a0<\/p>\n

\ud83d\udcab \uc608\uc81c \uc124\uba85<\/h2>\n

\ud074\ub77c\uc774\uc5b8\ud2b8 \ud504\ub85c\uadf8\ub7a8 \ub450\uac1c\ub97c \uc0dd\uc131\ud574\uc11c \uac01\uc790 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0\uc11c \ubcf4\ub0b4\ub294 \uba54\uc138\uc9c0\ub97c \uc0c1\ub300 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0 \ub728\ub3c4\ub85d \ud558\ub294 \ud504\ub85c\uc81d\ud2b8\uc774\ub2e4 .
\n\u00a0<\/p>\n

\ud83d\udcab \uc2e4\ud589 \uc804 \ub2e4\uc6b4\ubc1b\uc544\uc57c\ud558\ub294 \uac83\ub4e4<\/h2>\n

1. \ube0c\ub85c\ucee4\ub294 Mosquitto<\/a>\ub97c \ub2e4\uc6b4\ubc1b\uc544 \uc0ac\uc6a9<\/h5>\n
2. NuGet \ud328\ud0a4\uc9c0 M2Mqtt<\/code> \uc124\uce58<\/h5>\n

\"\"<\/a>
\n\u00a0<\/p>\n

\ud83d\udcab Mosquitto \uc2dc\uc791<\/h2>\n
1. cmd\ucc3d\uc5d0\uc11c Mosquitto\uac00 \uc124\uce58\ub41c \uacbd\ub85c\ub85c \uc774\ub3d9<\/h5>\n

cd C:\\Program Files\\mosquitto<\/code><\/p>\n

2. \uc774\ub3d9\ud55c\ub4a4 Mosquitto broker \uc2e4\ud589(-v : \ubaa8\ub4e0 \ud1b5\uc2e0\uacfc\uc815\uc744 \ubcf4\uc5ec\uc8fc\ub294 \uc635\uc158)<\/h5>\n

mosquitto -v<\/code>
\n\"\"<\/a>
\n\u00a0<\/p>\n

\ud83d\udcab \ud074\ub77c\uc774\uc5b8\ud2b8 form \ud615\ud0dc<\/h2>\n

\"\"<\/a>
\n\u00a0<\/p>\n

\ud83d\udcab \ud074\ub77c\uc774\uc5b8\ud2b8 \uc2dc\uc791<\/h2>\n
1. Start \ubc84\ud2bc\uc744 \ub204\ub974\uba74 \ud074\ub77c\uc774\uc5b8\ud2b8-broker \uc5f0\uacb0 \uc2dc\uc791<\/h5>\n

\"\"<\/a>
\n\u00a0<\/p>\n

\ud83d\udcab \uc804\uc1a1 \ubc0f \uc885\ub8cc<\/h2>\n
1. \uba54\uc138\uc9c0 \uc804\uc1a1<\/h5>\n

\uc804\uc1a1\ubc84\ud2bc\uc744 \ub204\ub974\uba74 \uc218\uc2e0 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc218\uc2e0\uba54\uc138\uc9c0 label\uc5d0 \uba54\uc138\uc9c0\ud45c\uc2dc
\n\"\"<\/a><\/p>\n

2. \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uc885\ub8cc\ub418\uc5c8\uc744\ub54c<\/h5>\n

\"\"<\/a>
\n\u00a0<\/p>\n

\ud83d\udcab \ud074\ub77c\uc774\uc5b8\ud2b8 \uc18c\uc2a4 \ucf54\ub4dc<\/h2>\n

\ud074\ub77c\uc774\uc5b8\ud2b8 \uc18c\uc2a4 \ucf54\ub4dc\ub294 \uc218\uc2e0\/\ubc1c\uc2e0 \ud1a0\ud53d\ub9cc \ub2e4\ub984!!<\/strong><\/p>\n

1. Client 1<\/h5>\n
using System;\nusing System.Net;\nusing System.Reflection.Emit;\nusing System.Text;\nusing System.Windows.Forms;\nusing uPLibrary.Networking.M2Mqtt;\nusing uPLibrary.Networking.M2Mqtt.Messages;\n\nnamespace Client\n{\n    public partial class Form1 : Form\n    {\n        private MqttClient client;\n\n        public Form1()\n        {\n            InitializeComponent();\n            \/\/\ud3fc \ub2eb\uae30 \uc774\ubca4\ud2b8 \uc120\uc5b8\n            this.FormClosed += Form1_FormClosing;\n        }\n        \/\/\/ <summary>\n        \/\/\/ \ud3fc \ub2eb\uae30 \uc774\ubca4\ud2b8 \ud578\ub4e4\ub7ec \uc120\uc5b8\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Form1_FormClosing(object sender, FormClosedEventArgs e)\n        {\n            if (client != null && client.IsConnected)\n            {\n                client.Disconnect();\n            }\n        }\n        \/\/\/ <summary>\n        \/\/\/ \uc218\uc2e0 \uba54\uc138\uc9c0 \ud45c\uc2dc\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Client_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e)\n        {\n            \/\/ \uc218\uc2e0\ub41c \uba54\uc2dc\uc9c0\ub97c \ubcc0\uc218\uc5d0 \uc800\uc7a5\n            string receivedMessage = Encoding.UTF8.GetString(e.Message);\n\n            \/\/ UI \uc5c5\ub370\uc774\ud2b8\ub97c \uc704\ud574 UI \uc2a4\ub808\ub4dc\ub85c \uc804\ub2ec\n            Invoke(new Action(() =>\n            {\n                \/\/ receivedMessage\ub97c Form label ReceivedText\uc5d0 \ud45c\uc2dc\n                ReceivedText.Text = receivedMessage;\n            }));\n        }\n        \/\/\/ <summary>\n        \/\/\/ start \ubc84\ud2bc \ud074\ub9ad\ud588\uc744\ub54c \uc2e4\ud589\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Startbutton_Click(object sender, EventArgs e)\n        {\n            \/\/ MQTT \ube0c\ub85c\ucee4 \uc8fc\uc18c\n            string MQTT_BROKER_ADDRESS = \"127.0.0.1\";\n\n            \/\/ \ud074\ub77c\uc774\uc5b8\ud2b8 \uc778\uc2a4\ud134\uc2a4 \uc0dd\uc131\n            client = new MqttClient(IPAddress.Parse(MQTT_BROKER_ADDRESS));\n\n            \/\/ \uba54\uc2dc\uc9c0 \uc218\uc2e0 \uc2dc \uc774\ubca4\ud2b8 \ud578\ub4e4\ub7ec \ub4f1\ub85d\n            client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived;\n\n            \/\/ \uace0\uc720\ud55c \ud074\ub77c\uc774\uc5b8\ud2b8 ID \uc0dd\uc131\n            string clientId = \"COOKIE\";\n\n            try\n            {\n                client.Connect(clientId);\n                \/\/\uc5f0\uacb0\uc774 \uc131\uacf5\ud558\uba74 Serverconnect\uc5d0 \uc131\uacf5 \uba54\uc138\uc9c0\ucd9c\ub825\n                if (client.IsConnected) Serverconnect.Text = \"SERVER \" + MQTT_BROKER_ADDRESS + \"\uc640 \uc5f0\uacb0 \uc131\uacf5!\";\n            }\n            catch (Exception ex)\n            {\n                \/\/\uc5f0\uacb0\uc774 \uc2e4\ud328\ud558\uba74 Serverconnect\uc5d0 \uc2e4\ud328 \uba54\uc138\uc9c0, \uc624\ub958\uba54\uc138\uc9c0 \ucd9c\ub825\n                Serverconnect.Text = \"\ube0c\ub85c\ucee4\uc5d0 \uc5f0\uacb0\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.\\n\" + ex.Message + \"\uc5f0\uacb0 \uc624\ub958\";\n            }\n\n            \/\/ \uc218\uc2e0 \ud1a0\ud53d \"coorong\" \uad6c\ub3c5\n            client.Subscribe(new string[] { \"coorong\" }, new byte[] { MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE });\n        }\n        \/\/\/ <summary>\n        \/\/\/ Send\ubc84\ud2bc \ud074\ub9ad\ud588\uc744\ub54c \uc2e4\ud589\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Sendbutton_Click(object sender, EventArgs e)\n        {\n            \/\/ \ubcf4\ub0bc \uba54\uc2dc\uc9c0\n            string messageToSend = SendText.Text;\n\n            \/\/ \ubc1c\uc2e0 \ud1a0\ud53d \"cookie\", \uba54\uc138\uc9c0 \ubc1c\uc1a1\n            client.Publish(\"cookie\", Encoding.UTF8.GetBytes(messageToSend), MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE, false);\n\n            \/\/\uba54\uc138\uc9c0\ubc15\uc2a4 \ucd08\uae30\ud654\n            SendText.Text = \"\";\n        }\n    }\n}\n\n<\/code><\/pre>\n
\u00a0<\/p>\n
2. Client 2<\/h5>\n
using System;\nusing System.Net;\nusing System.Reflection.Emit;\nusing System.Text;\nusing System.Windows.Forms;\nusing uPLibrary.Networking.M2Mqtt;\nusing uPLibrary.Networking.M2Mqtt.Messages;\n\nnamespace Client\n{\n    public partial class Form1 : Form\n    {\n        private MqttClient client;\n\n        public Form1()\n        {\n            InitializeComponent();\n            \/\/\ud3fc \ub2eb\uae30 \uc774\ubca4\ud2b8 \uc120\uc5b8\n            this.FormClosed += Form1_FormClosing;\n        }\n        \/\/\/ <summary>\n        \/\/\/ \ud3fc \ub2eb\uae30 \uc774\ubca4\ud2b8 \ud578\ub4e4\ub7ec \uc120\uc5b8\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Form1_FormClosing(object sender, FormClosedEventArgs e)\n        {\n            if (client != null && client.IsConnected)\n            {\n                client.Disconnect();\n            }\n        }\n\n        \/\/\/ <summary>\n        \/\/\/ \uc218\uc2e0 \uba54\uc138\uc9c0 \ud45c\uc2dc\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Client_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e)\n        {\n            \/\/ \uc218\uc2e0\ub41c \uba54\uc2dc\uc9c0\ub97c \ubcc0\uc218\uc5d0 \uc800\uc7a5\n            string receivedMessage = Encoding.UTF8.GetString(e.Message);\n\n            \/\/ UI \uc5c5\ub370\uc774\ud2b8\ub97c \uc704\ud574 UI \uc2a4\ub808\ub4dc\ub85c \uc804\ub2ec\n            Invoke(new Action(() =>\n            {\n                \/\/ receivedMessage\ub97c Form label ReceivedText\uc5d0 \ud45c\uc2dc\n                ReceivedText.Text = receivedMessage;\n            }));\n        }\n        \/\/\/ <summary>\n        \/\/\/ start \ubc84\ud2bc \ud074\ub9ad\ud588\uc744\ub54c \uc2e4\ud589\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Startbutton_Click(object sender, EventArgs e)\n        {\n            \/\/ MQTT \ube0c\ub85c\ucee4 \uc8fc\uc18c\n            string MQTT_BROKER_ADDRESS = \"127.0.0.1\";\n\n            \/\/ \ud074\ub77c\uc774\uc5b8\ud2b8 \uc778\uc2a4\ud134\uc2a4 \uc0dd\uc131\n            client = new MqttClient(IPAddress.Parse(MQTT_BROKER_ADDRESS));\n\n            \/\/ \uba54\uc2dc\uc9c0 \uc218\uc2e0 \uc2dc \uc774\ubca4\ud2b8 \ud578\ub4e4\ub7ec \ub4f1\ub85d\n            client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived;\n\n            \/\/ \uace0\uc720\ud55c \ud074\ub77c\uc774\uc5b8\ud2b8 ID \uc0dd\uc131\n            string clientId = \"COORONG\";\n\n            try\n            {\n                client.Connect(clientId);\n                \/\/\uc5f0\uacb0\uc774 \uc131\uacf5\ud558\uba74 Serverconnect\uc5d0 \uc131\uacf5 \uba54\uc138\uc9c0\ucd9c\ub825\n                if (client.IsConnected) Serverconnect.Text = \"SERVER \" + MQTT_BROKER_ADDRESS + \"\uc640 \uc5f0\uacb0 \uc131\uacf5!\";\n            }\n            catch (Exception ex)\n            {\n                \/\/\uc5f0\uacb0\uc774 \uc2e4\ud328\ud558\uba74 Serverconnect\uc5d0 \uc2e4\ud328 \uba54\uc138\uc9c0, \uc624\ub958\uba54\uc138\uc9c0 \ucd9c\ub825\n                Serverconnect.Text = \"\ube0c\ub85c\ucee4\uc5d0 \uc5f0\uacb0\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.\\n\" + ex.Message + \"\uc5f0\uacb0 \uc624\ub958\";\n            }\n\n            \/\/ \uc218\uc2e0 \ud1a0\ud53d \"cookie\" \uad6c\ub3c5\n            client.Subscribe(new string[] { \"cookie\" }, new byte[] { MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE });\n        }\n        \/\/\/ <summary>\n        \/\/\/ Send\ubc84\ud2bc \ud074\ub9ad\ud588\uc744\ub54c \uc2e4\ud589\n        \/\/\/ <\/summary>\n        \/\/\/ <param name=\"sender\"><\/param>\n        \/\/\/ <param name=\"e\"><\/param>\n        private void Sendbutton_Click(object sender, EventArgs e)\n        {\n            \/\/ \ubcf4\ub0bc \uba54\uc2dc\uc9c0\n            string messageToSend = SendText.Text;\n\n            \/\/ \ubc1c\uc2e0 \ud1a0\ud53d \"coorong\", \uba54\uc138\uc9c0 \ubc1c\uc1a1\n            client.Publish(\"coorong\", Encoding.UTF8.GetBytes(messageToSend), MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE, false);\n\n            \/\/\uba54\uc138\uc9c0\ubc15\uc2a4 \ucd08\uae30\ud654\n            SendText.Text = \"\";\n        }\n    }\n}\n\n<\/code><\/pre>\n
\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"
\ud83d\udcab MQTT\ub780? MQTT(\uba54\uc2dc\uc9c0 \ud050\uc789 \ud154\ub808\uba54\ud2b8\ub9ac \ud2b8\ub79c\uc2a4\ud3ec\ud2b8, Message Queuing Telemetry Transport)\ub294 ISO \ud45c\uc900(ISO\/IEC PRF 20922) \ubc1c\ud589-\uad6c\ub3c5 \uae30\ubc18\uc758 \uba54\uc2dc\uc9d5 \ud504\ub85c\ud1a0\ucf5c\uc774\ub2e4. TCP\/IP \ud504\ub85c\ud1a0\ucf5c \uc704\uc5d0\uc11c \ub3d9\uc791\ud55c\ub2e4. “\uc791\uc740 \ucf54\ub4dc \uacf5\uac04”(small code footprint)\uc774 \ud544\uc694\ud558\uac70\ub098 \ub124\ud2b8\uc6cc\ud06c \ub300\uc5ed\ud3ed\uc774 \uc81c\ud55c\ub418\ub294 \uc6d0\uaca9 \uc704\uce58\uc640\uc758 \uc5f0\uacb0\uc744 \uc704\ud574 \uc124\uacc4\ub418\uc5b4 \uc788\ub2e4. \ubc1c\ud589-\uad6c\ub3c5 \uba54\uc2dc\uc9d5 \ud328\ud134\uc740 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uac00 \ud544\uc694\ud558\ub2e4. \u00a0 \ud83d\udcab \uc608\uc81c \uc124\uba85 \ud074\ub77c\uc774\uc5b8\ud2b8 \ud504\ub85c\uadf8\ub7a8 \ub450\uac1c\ub97c \uc0dd\uc131\ud574\uc11c \uac01\uc790 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0\uc11c \ubcf4\ub0b4\ub294 \uba54\uc138\uc9c0\ub97c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,49],"tags":[6,36,37],"class_list":["post-557","post","type-post","status-publish","format-standard","hentry","category-csharp","category-system-development","tag-c","tag-mqtt","tag-37"],"yoast_head":"\n[C#] MQTT \ud1b5\uc2e0 \ud074\ub77c\uc774\uc5b8\ud2b8 \uc608\uc81c - Dozzing World<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.dozzing.kr\/?p=557\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[C#] MQTT \ud1b5\uc2e0 \ud074\ub77c\uc774\uc5b8\ud2b8 \uc608\uc81c - Dozzing World\" \/>\n<meta property=\"og:description\" content=\"\ud83d\udcab MQTT\ub780? MQTT(\uba54\uc2dc\uc9c0 \ud050\uc789 \ud154\ub808\uba54\ud2b8\ub9ac \ud2b8\ub79c\uc2a4\ud3ec\ud2b8, Message Queuing Telemetry Transport)\ub294 ISO \ud45c\uc900(ISO\/IEC PRF 20922) \ubc1c\ud589-\uad6c\ub3c5 \uae30\ubc18\uc758 \uba54\uc2dc\uc9d5 \ud504\ub85c\ud1a0\ucf5c\uc774\ub2e4. TCP\/IP \ud504\ub85c\ud1a0\ucf5c \uc704\uc5d0\uc11c \ub3d9\uc791\ud55c\ub2e4. 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