107 lines
3.2 KiB
Go
107 lines
3.2 KiB
Go
package main
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import (
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"fmt"
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"net"
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"regexp"
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"strconv"
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)
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// StartUDPServer 启动UDP服务器
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func StartUDPServer(address string) error {
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addr, err := net.ResolveUDPAddr("udp", address)
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if err != nil {
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return fmt.Errorf("解析UDP地址失败: %v", err)
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}
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conn, err := net.ListenUDP("udp", addr)
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if err != nil {
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return fmt.Errorf("监听UDP地址失败: %v", err)
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}
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defer conn.Close()
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startClientCleanup()
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Logger.Printf("UDP服务器已启动，正在监听 %s\n", address)
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buffer := make([]byte, 1024)
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for {
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n, remoteAddr, err := conn.ReadFromUDP(buffer)
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if err != nil {
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Logger.Printf("从UDP客户端读取失败: %v", err)
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continue
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}
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go handleUDPPacket(conn, remoteAddr, buffer[:n])
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}
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}
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// handleUDPPacket 处理UDP数据包
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func handleUDPPacket(conn *net.UDPConn, addr *net.UDPAddr, data []byte) {
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remoteAddr := addr.String()
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addClient(remoteAddr)
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rawData := string(data)
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TCPDataLogger.Printf("从UDP客户端 %s 接收到原始数据: %s", remoteAddr, rawData)
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// 尝试解析批量数据
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readings, err := parseBatchData(rawData)
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if err == nil && len(readings) > 0 {
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// 批量数据解析成功
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TCPDataLogger.Printf("批量解析成功 - UDP客户端: %s, 传感器数量: %d", remoteAddr, len(readings))
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// 保存所有传感器数据
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if err := SaveBatchSensorData(readings); err != nil {
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Logger.Printf("保存批量传感器数据失败: %v", err)
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}
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// 尝试提取设备ID并透传原始数据
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if deviceID := ExtractDeviceIDFromBatchRaw(rawData); deviceID > 0 {
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go func(id int, payload string) {
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if fErr := ForwardRawData(id, payload); fErr != nil {
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Logger.Printf("转发设备 %d 数据失败: %v", id, fErr)
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}
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}(deviceID, rawData)
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}
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// 记录第一个传感器的数据（用于兼容现有日志格式）
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firstSensor := readings[0]
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TCPDataLogger.Printf("解析成功 - UDP客户端: %s, 传感器ID: %d, 值: X=%.3f, Y=%.3f, Z=%.3f, 温度=%.1f°C",
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remoteAddr, firstSensor.SensorID, firstSensor.X, firstSensor.Y, firstSensor.Z, firstSensor.Temperature)
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} else {
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// 尝试传统解析方法
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sensorID, x, y, z, temperature, parseErr := parseData(rawData)
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if parseErr == nil {
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TCPDataLogger.Printf("解析成功 - UDP客户端: %s, 传感器ID: %d, 值: X=%.3f, Y=%.3f, Z=%.3f, 温度=%.1f°C",
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remoteAddr, sensorID, x, y, z, temperature)
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if err := SaveSensorData(sensorID, x, y, z, temperature, 0); err != nil {
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Logger.Printf("保存传感器数据失败: %v", err)
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}
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// 从原始字符串尝试提取设备ID并透传
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if m := regexp.MustCompile(`([0-9]+)-\d+`).FindStringSubmatch(rawData); len(m) == 2 {
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if id, convErr := strconv.Atoi(m[1]); convErr == nil && id > 0 {
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go func(id int, payload string) {
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if fErr := ForwardRawData(id, payload); fErr != nil {
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Logger.Printf("转发设备 %d 数据失败: %v", id, fErr)
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}
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}(id, rawData)
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}
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}
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} else {
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TCPDataLogger.Printf("无法解析从UDP客户端 %s 接收到的数据: %s, 错误: %v", remoteAddr, rawData, parseErr)
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}
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}
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resp := "OK\n"
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if _, err := conn.WriteToUDP([]byte(resp), addr); err != nil {
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Logger.Printf("发送响应到UDP客户端 %s 失败: %v", remoteAddr, err)
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}
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updateClientLastSeen(remoteAddr)
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}
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