package main

import (
	"fmt"
	"net"
	"time"
	
	"gortc.io/sdp"
)

func main()  {
	var (
		s sdp.Session
		b []byte
	)
	// defining medias
	audio := sdp.Media{
		Description: sdp.MediaDescription{
			Type:     "audio",
			Port:     49170,
			Formats:   []string{"0"},
			Protocol: "RTP/AVP",
		},
	}
	video := sdp.Media{
		Description: sdp.MediaDescription{
			Type:     "video",
			Port:     51372,
			Formats:   []string{"99"},
			Protocol: "RTP/AVP",
		},
		Bandwidths: sdp.Bandwidths{
			sdp.BandwidthApplicationSpecific: 66781,
		},
		Encryption: sdp.Encryption{
			Method: "prompt",
		},
	}
	video.AddAttribute("rtpmap", "99", "h263-1998/90000")

	// defining message
	m := &sdp.Message{
		Origin: sdp.Origin{
			Username:       "jdoe",
			SessionID:      2890844526,
			SessionVersion: 2890842807,
			Address:        "10.47.16.5",
		},
		Name:  "SDP Seminar",
		Info:  "A Seminar on the session description protocol",
		URI:   "http://www.example.com/seminars/sdp.pdf",
		Email: "[email protected] (Jane Doe)",
		Phone: "12345",
		Connection: sdp.ConnectionData{
			IP:  net.ParseIP("224.2.17.12"),
			TTL: 127,
		},
		Bandwidths: sdp.Bandwidths{
			sdp.BandwidthConferenceTotal: 154798,
		},
		Timing: []sdp.Timing{
			{
				Start:  sdp.NTPToTime(2873397496),
				End:    sdp.NTPToTime(2873404696),
				Repeat: 7 * time.Hour * 24,
				Active: 3600 * time.Second,
				Offsets: []time.Duration{
					0,
					25 * time.Hour,
				},
			},
		},
		Encryption: sdp.Encryption{
			Method: "clear",
			Key: "ab8c4df8b8f4as8v8iuy8re",
		},
		Medias: []sdp.Media{audio, video},
	}
	m.AddFlag("recvonly")

	// appending message to session
	s = m.Append(s)

	// appending session to byte buffer
	b = s.AppendTo(b)
	fmt.Println(string(b))
}

package main

import (
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"os"

	"gortc.io/sdp"
)

func main() {
	name := "example.sdp"
	if len(os.Args) > 1 {
		name = os.Args[1]
	}
	var (
		s   sdp.Session
		b   []byte
		err error
		f   io.ReadCloser
	)
	fmt.Println("sdp file:", name)
	if f, err = os.Open(name); err != nil {
		log.Fatal("err:", err)
	}
	defer f.Close()
	if b, err = ioutil.ReadAll(f); err != nil {
		log.Fatal("err:", err)
	}
	if s, err = sdp.DecodeSession(b, s); err != nil {
		log.Fatal("err:", err)
	}
	for k, v := range s {
		fmt.Println(k, v)
	}
	d := sdp.NewDecoder(s)
	m := new(sdp.Message)
	if err = d.Decode(m); err != nil {
		log.Fatal("err:", err)
	}
	fmt.Println("Decoded session", m.Name)
	fmt.Println("Info:", m.Info)
	fmt.Println("Origin:", m.Origin)
}

package main

import (
	"fmt"

	"gortc.io/sdp"
)

func main() {
	var (
		s sdp.Session
		b []byte
	)
	b = s.AddVersion(0).
		AddMediaDescription(sdp.MediaDescription{
			Type:     "video",
			Port:     51372,
			Formats:   []string{"99"},
			Protocol: "RTP/AVP",
		}).
		AddAttribute("rtpmap", "99", "h263-1998/90000").
		AddLine(sdp.TypeEmail, "[email protected]").
		AddRaw('ü', "vαlue").
		AppendTo(b)
	// and so on
	fmt.Println(string(b))
	// Output:
	//	v=0
	//	m=video 51372 RTP/AVP 99
	//	a=rtpmap:99 h263-1998/90000
	//	[email protected]
	//	ü=vαlue
}