下面是一个简单的 Go 语言编写的 SIP 呼叫测试工具，支持媒体测试：
”`go package main
import (
"fmt""os/exec""time""github.com/gortc/sdp"
)
func main() {
// 设置参数target := "sip:target@domain.com"from := "sip:from@domain.com"username := "username"password := "password"audioFile := "/path/to/audio/file.wav"// 创建 SDPsession := &sdp.Session{Time: sdp.Time{Start: time.Now(),End: time.Now().Add(time.Hour),},Origin: sdp.Origin{Username: username,SessionID: 0,SessionVersion: 0,NetworkType: "IN",AddressType: "IP4",UnicastAddress: "",},Name: "-",Info: "",URI: "",Email: "",PhoneNum: "",ConnectionData: &sdp.ConnectionData{NetworkType: "IN",AddressType: "IP4",Address: "",},Bandwidths: []sdp.Bandwidth{},TimeZones: []sdp.TimeZone{},AttributesMapWithFields(sdp.AttributeFieldMediaDescriptions): []string{fmt.Sprintf("m=audio %d RTP/AVP 0", getFreePort()),fmt.Sprintf("a=rtpmap:%d PCMU/8000", 0),fmt.Sprintf("a=sendrecv"),},}// 将 SDP 编码为字符串s, err := session.Marshal()if err != nil {fmt.Println("Error encoding SDP:", err)return}// 构建命令行参数args := []string{"-u", username,"-w", password,"-f", from,"-t", target,"--sdp", string(s),}// 执行呼叫cmd := exec.Command("linphonecsh", args...)if err := cmd.Run(); err != nil {fmt.Println("Error making call:", err)return}// 等待媒体测试完成time.Sleep(5 * time.Second)// 播放音频文件进行测试cmd = exec.Command("play", audioFile)if err := cmd.Run(); err != nil {fmt.Println("Error playing audio file:", err)return}
}
// 获取一个空闲的端口号（用于 SDP 中） func getFreePort() int
