mirror of https://gitee.com/godoos/godoos.git
3 changed files with 216 additions and 144 deletions
@ -0,0 +1,108 @@ |
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//go:build !windows
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// +build !windows
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package localchat |
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import ( |
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"encoding/json" |
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"log" |
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"net" |
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) |
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func SendBroadcast(message UdpMessage) error { |
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broadcastAddr := GetBroadcastAddr() |
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addr, err := net.ResolveUDPAddr("udp4", broadcastAddr) |
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if err != nil { |
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log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, 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", broadcastAddr, err) |
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return err |
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} |
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defer conn.Close() |
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// 获取本地 IP 地址
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localIP, err := GetLocalIP() |
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log.Printf("本地 IP 地址: %s", localIP) |
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if err != nil { |
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log.Printf("Failed to get local IP address: %v", err) |
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return err |
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} |
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message.IP = localIP |
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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", broadcastAddr, 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", broadcastAddr, err) |
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return err |
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} |
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log.Printf("发送消息到 %s 成功", broadcastAddr) |
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return nil |
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} |
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// ListenForBroadcast 监听多播消息
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func ListenForBroadcast() { |
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broadcastAddr := GetBroadcastAddr() |
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addr, err := net.ResolveUDPAddr("udp4", broadcastAddr) |
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if err != nil { |
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log.Fatalf("Failed to resolve UDP address: %v", err) |
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} |
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// 使用 ListenMulticastUDP 创建多播连接
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conn, err := net.ListenMulticastUDP("udp4", nil, addr) |
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if err != nil { |
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log.Fatalf("Failed to listen on UDP address: %v", err) |
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} |
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defer conn.Close() |
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// 获取本地 IP 地址
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localIP, err := GetLocalIP() |
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if err != nil { |
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log.Printf("Failed to get local IP address: %v", err) |
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} |
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// 开始监听多播消息
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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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log.Printf("Error reading from UDP: %v", err) |
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continue |
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} |
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var udpMsg UdpMessage |
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err = json.Unmarshal(buffer[:n], &udpMsg) |
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if err != nil { |
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log.Printf("Error unmarshalling JSON: %v", err) |
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continue |
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} |
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if udpMsg.IP == localIP { |
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continue |
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} |
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OnlineUsers[udpMsg.IP] = udpMsg |
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if udpMsg.Type == "file" { |
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RecieveFile(udpMsg) |
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} |
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log.Printf("Received message from %s: %s", remoteAddr, udpMsg.Hostname) |
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} |
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} |
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func GetBroadcastAddr() string { |
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//return libs.GetUdpAddr()
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return "224.0.0.251:20249" |
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} |
@ -0,0 +1,106 @@ |
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//go:build windows
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// +build windows
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package localchat |
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import ( |
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"encoding/json" |
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"log" |
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"net" |
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) |
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func SendBroadcast(message UdpMessage) error { |
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broadcastAddr := GetBroadcastAddr() |
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addr, err := net.ResolveUDPAddr("udp4", broadcastAddr) |
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if err != nil { |
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log.Printf("Failed to resolve UDP address %s: %v", broadcastAddr, 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", broadcastAddr, err) |
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return err |
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} |
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defer conn.Close() |
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// 获取本地 IP 地址
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localIP, err := GetLocalIP() |
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log.Printf("本地 IP 地址: %s", localIP) |
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if err != nil { |
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log.Printf("Failed to get local IP address: %v", err) |
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return err |
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} |
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message.IP = localIP |
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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", broadcastAddr, 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", broadcastAddr, err) |
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return err |
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} |
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log.Printf("发送消息到 %s 成功", broadcastAddr) |
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return nil |
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} |
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// ListenForBroadcast 监听广播消息
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func ListenForBroadcast() { |
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// 使用本地地址监听
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localAddr, err := net.ResolveUDPAddr("udp4", ":20249") |
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if err != nil { |
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log.Fatalf("Failed to resolve local UDP address: %v", 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.Fatalf("Failed to listen on UDP address: %v", err) |
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} |
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defer conn.Close() |
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// 获取本地 IP 地址
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localIP, err := GetLocalIP() |
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if err != nil { |
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log.Printf("Failed to get local IP address: %v", err) |
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} |
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// 开始监听广播消息
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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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log.Printf("Error reading from UDP: %v", err) |
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continue |
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} |
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var udpMsg UdpMessage |
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err = json.Unmarshal(buffer[:n], &udpMsg) |
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if err != nil { |
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log.Printf("Error unmarshalling JSON: %v", err) |
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continue |
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} |
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if udpMsg.IP == localIP { |
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continue |
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} |
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OnlineUsers[udpMsg.IP] = udpMsg |
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if udpMsg.Type == "file" { |
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RecieveFile(udpMsg) |
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} |
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log.Printf("Received message from %s: %s", remoteAddr, udpMsg.Hostname) |
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} |
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} |
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func GetBroadcastAddr() string { |
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//return libs.GetUdpAddr()
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return "255.255.255.255:20249" |
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} |
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