📨 Node-RED UDP ノードガイド

[ { "id": "udp_sample_tab", "type": "tab", "label": "UDP サンプル", "disabled": false, "info": "" }, { "id": "udp_comment1", "type": "comment", "z": "udp_sample_tab", "name": "━━━ 基本: UDP受信 ━━━", "info": "ポート8000でUDPパケットを受信", "x": 170, "y": 40, "wires": [] }, { "id": "udp_in_basic", "type": "udp in", "z": "udp_sample_tab", "name": "UDP In :8000", "iface": "", "port": "8000", "ipv": "udp4", "multicast": "false", "group": "", "datatype": "utf8", "x": 170, "y": 100, "wires": [["udp_debug_received", "udp_func_info"]] }, { "id": "udp_debug_received", "type": "debug", "z": "udp_sample_tab", "name": "受信データ", "active": true, "tosidebar": true, "console": false, "tostatus": true, "complete": "payload", "targetType": "msg", "statusVal": "ip", "statusType": "msg", "x": 390, "y": 100, "wires": [] }, { "id": "udp_func_info", "type": "function", "z": "udp_sample_tab", "name": "送信元情報", "func": "msg.senderInfo = {\n ip: msg.ip,\n port: msg.port,\n data: msg.payload,\n timestamp: new Date().toISOString()\n};\nnode.status({fill: \"green\", shape: \"dot\", text: msg.ip + \":\" + msg.port});\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 390, "y": 140, "wires": [["udp_debug_info"]] }, { "id": "udp_debug_info", "type": "debug", "z": "udp_sample_tab", "name": "送信元情報", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "senderInfo", "targetType": "msg", "x": 590, "y": 140, "wires": [] }, { "id": "udp_comment2", "type": "comment", "z": "udp_sample_tab", "name": "━━━ 基本: UDP送信（ユニキャスト） ━━━", "info": "", "x": 210, "y": 220, "wires": [] }, { "id": "udp_inject_unicast", "type": "inject", "z": "udp_sample_tab", "name": "ユニキャスト送信", "props": [{"p": "payload"}], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "Hello UDP!", "payloadType": "str", "x": 180, "y": 280, "wires": [["udp_out_unicast"]] }, { "id": "udp_out_unicast", "type": "udp out", "z": "udp_sample_tab", "name": "UDP Out (localhost:8000)", "addr": "localhost", "iface": "", "port": "8000", "ipv": "udp4", "outport": "", "base64": false, "multicast": "false", "x": 440, "y": 280, "wires": [] }, { "id": "udp_comment3", "type": "comment", "z": "udp_sample_tab", "name": "━━━ ブロードキャスト送信 ━━━", "info": "同一サブネット内の全デバイスに送信", "x": 190, "y": 360, "wires": [] }, { "id": "udp_inject_broadcast", "type": "inject", "z": "udp_sample_tab", "name": "ブロードキャスト送信", "props": [{"p": "payload"}], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "BROADCAST: Hello everyone!", "payloadType": "str", "x": 190, "y": 420, "wires": [["udp_out_broadcast"]] }, { "id": "udp_out_broadcast", "type": "udp out", "z": "udp_sample_tab", "name": "UDP Broadcast", "addr": "255.255.255.255", "iface": "", "port": "8000", "ipv": "udp4", "outport": "", "base64": false, "multicast": "broadcast", "x": 440, "y": 420, "wires": [] }, { "id": "udp_comment4", "type": "comment", "z": "udp_sample_tab", "name": "━━━ JSON データの送受信 ━━━", "info": "", "x": 190, "y": 500, "wires": [] }, { "id": "udp_in_json", "type": "udp in", "z": "udp_sample_tab", "name": "UDP In :8001 (JSON)", "iface": "", "port": "8001", "ipv": "udp4", "multicast": "false", "group": "", "datatype": "utf8", "x": 190, "y": 560, "wires": [["udp_func_json_parse"]] }, { "id": "udp_func_json_parse", "type": "function", "z": "udp_sample_tab", "name": "JSONパース", "func": "try {\n msg.data = JSON.parse(msg.payload);\n msg.data.receivedAt = new Date().toISOString();\n msg.data.from = msg.ip;\n node.status({fill: \"green\", shape: \"dot\", text: \"JSON OK\"});\n} catch(e) {\n msg.data = {error: \"Invalid JSON\", raw: msg.payload};\n node.status({fill: \"red\", shape: \"ring\", text: \"JSON Error\"});\n}\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 430, "y": 560, "wires": [["udp_debug_json"]] }, { "id": "udp_debug_json", "type": "debug", "z": "udp_sample_tab", "name": "JSON データ", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "data", "targetType": "msg", "x": 610, "y": 560, "wires": [] }, { "id": "udp_inject_json", "type": "inject", "z": "udp_sample_tab", "name": "JSON送信", "props": [{"p": "payload"}], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "{\"sensor\":\"temp\",\"value\":25.5,\"unit\":\"C\"}", "payloadType": "str", "x": 170, "y": 620, "wires": [["udp_out_json"]] }, { "id": "udp_out_json", "type": "udp out", "z": "udp_sample_tab", "name": "UDP Out :8001", "addr": "localhost", "iface": "", "port": "8001", "ipv": "udp4", "outport": "", "base64": false, "multicast": "false", "x": 400, "y": 620, "wires": [] }, { "id": "udp_comment5", "type": "comment", "z": "udp_sample_tab", "name": "━━━ 受信元への返信（エコー） ━━━", "info": "msg.ip と msg.port を使って返信", "x": 200, "y": 700, "wires": [] }, { "id": "udp_in_echo", "type": "udp in", "z": "udp_sample_tab", "name": "UDP In :8002", "iface": "", "port": "8002", "ipv": "udp4", "multicast": "false", "group": "", "datatype": "utf8", "x": 170, "y": 760, "wires": [["udp_func_echo"]] }, { "id": "udp_func_echo", "type": "function", "z": "udp_sample_tab", "name": "エコー処理", "func": "// 送信元情報を保持（返信用）\nvar replyTo = {\n ip: msg.ip,\n port: msg.port\n};\n\n// エコー応答を作成\nmsg.payload = \"[ECHO] \" + msg.payload;\n\n// 返信先を設定\nmsg.ip = replyTo.ip;\nmsg.port = replyTo.port;\n\nnode.status({fill: \"blue\", shape: \"dot\", text: \"Reply to \" + replyTo.ip});\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 390, "y": 760, "wires": [["udp_out_echo", "udp_debug_echo"]] }, { "id": "udp_out_echo", "type": "udp out", "z": "udp_sample_tab", "name": "UDP Reply (msg.ip/port)", "addr": "", "iface": "", "port": "", "ipv": "udp4", "outport": "", "base64": false, "multicast": "false", "x": 620, "y": 760, "wires": [] }, { "id": "udp_debug_echo", "type": "debug", "z": "udp_sample_tab", "name": "エコー送信", "active": true, "tosidebar": true, "console": false, "tostatus": true, "complete": "payload", "targetType": "msg", "statusVal": "ip", "statusType": "msg", "x": 590, "y": 800, "wires": [] }, { "id": "udp_comment6", "type": "comment", "z": "udp_sample_tab", "name": "━━━ 定期的なセンサーデータ送信 ━━━", "info": "", "x": 210, "y": 880, "wires": [] }, { "id": "udp_inject_periodic", "type": "inject", "z": "udp_sample_tab", "name": "3秒ごと", "props": [{"p": "payload"}], "repeat": "3", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 160, "y": 940, "wires": [["udp_func_sensor"]] }, { "id": "udp_func_sensor", "type": "function", "z": "udp_sample_tab", "name": "センサーデータ生成", "func": "var temp = (20 + Math.random() * 10).toFixed(1);\nvar humidity = Math.floor(40 + Math.random() * 40);\n\nmsg.payload = JSON.stringify({\n deviceId: \"sensor-001\",\n temperature: parseFloat(temp),\n humidity: humidity,\n timestamp: new Date().toISOString()\n});\n\nnode.status({fill: \"green\", shape: \"dot\", text: temp + \"°C\"});\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 380, "y": 940, "wires": [["udp_out_sensor", "udp_debug_sensor"]] }, { "id": "udp_out_sensor", "type": "udp out", "z": "udp_sample_tab", "name": "UDP Broadcast :8003", "addr": "255.255.255.255", "iface": "", "port": "8003", "ipv": "udp4", "outport": "", "base64": false, "multicast": "broadcast", "x": 620, "y": 940, "wires": [] }, { "id": "udp_debug_sensor", "type": "debug", "z": "udp_sample_tab", "name": "送信データ", "active": true, "tosidebar": true, "console": false, "tostatus": true, "complete": "payload", "targetType": "msg", "statusVal": "\"送信\"", "statusType": "str", "x": 590, "y": 980, "wires": [] } ]