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95 lines
2.5 KiB
95 lines
2.5 KiB
/*
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* GodoOS - A lightweight cloud desktop
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* Copyright (C) 2024 https://godoos.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package localchat
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import (
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"encoding/json"
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"fmt"
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"godo/libs"
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"log"
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"net"
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"net/http"
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"os"
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"time"
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)
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// HandleMessage 处理 HTTP 请求
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func HandleMessage(w http.ResponseWriter, r *http.Request) {
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var msg UdpMessage
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decoder := json.NewDecoder(r.Body)
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if err := decoder.Decode(&msg); err != nil {
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http.Error(w, "Invalid request body", http.StatusBadRequest)
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return
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}
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defer r.Body.Close()
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hostname, err := os.Hostname()
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if err != nil {
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libs.ErrorMsg(w, "HandleMessage error")
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return
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}
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msg.Hostname = hostname
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msg.Time = time.Now()
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err = SendToIP(msg)
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if err != nil {
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http.Error(w, "Failed to send message", http.StatusInternalServerError)
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return
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}
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w.WriteHeader(http.StatusOK)
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fmt.Fprintln(w, "Text message send successfully")
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}
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// SendToIP 向指定的 IP 地址发送 UDP 消息
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func SendToIP(message UdpMessage) error {
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toIp := message.IP
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port := "56780"
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addr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf("%s:%s", toIp, port))
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if err != nil {
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log.Printf("Failed to resolve UDP address %s:%s: %v", toIp, port, err)
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return err
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}
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// 使用本地地址进行连接
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localAddr, err := net.ResolveUDPAddr("udp4", "0.0.0.0:0")
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if err != nil {
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log.Printf("Failed to resolve local UDP address: %v", err)
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return err
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}
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conn, err := net.ListenUDP("udp4", localAddr)
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if err != nil {
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log.Printf("Failed to listen on UDP address %s: %v", toIp, err)
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return err
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}
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defer conn.Close()
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data, err := json.Marshal(message)
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if err != nil {
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log.Printf("Failed to marshal JSON for %s: %v", toIp, err)
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return err
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}
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_, err = conn.WriteToUDP(data, addr)
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if err != nil {
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log.Printf("Failed to write to UDP address %s: %v", toIp, err)
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return err
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}
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log.Printf("发送 UDP 消息到 %s 成功", toIp)
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return nil
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}
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