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100 lines
2.9 KiB
100 lines
2.9 KiB
// MIT License
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//
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// Copyright (c) 2024 godoos.com
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// Email: xpbb@qq.com
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// GitHub: github.com/phpk/godoos
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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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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