116 lines
2.8 KiB
Go
116 lines
2.8 KiB
Go
package srt
|
|
|
|
// #include <srt/srt.h>
|
|
import "C"
|
|
|
|
import (
|
|
"log"
|
|
"net"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/haivision/srtgo"
|
|
"gitlab.crans.org/nounous/ghostream/auth"
|
|
)
|
|
|
|
var (
|
|
clientDataChannels map[string][]chan Packet
|
|
)
|
|
|
|
// Options holds web package configuration
|
|
type Options struct {
|
|
Enabled bool
|
|
ListenAddress string
|
|
MaxClients int
|
|
}
|
|
|
|
// Packet contains the necessary data to broadcast events like stream creating, packet receiving or stream closing.
|
|
type Packet struct {
|
|
Data []byte
|
|
PacketType string
|
|
StreamName string
|
|
}
|
|
|
|
// Split host and port from listen address
|
|
func splitHostPort(hostport string) (string, uint16) {
|
|
host, portS, err := net.SplitHostPort(hostport)
|
|
if err != nil {
|
|
log.Fatalf("Failed to split host and port from %s", hostport)
|
|
}
|
|
if host == "" {
|
|
host = "0.0.0.0"
|
|
}
|
|
port64, err := strconv.ParseUint(portS, 10, 16)
|
|
if err != nil {
|
|
log.Fatalf("Port is not a integer: %s", err)
|
|
}
|
|
return host, uint16(port64)
|
|
}
|
|
|
|
// GetNumberConnectedSessions get the number of currently connected clients
|
|
func GetNumberConnectedSessions(streamID string) int {
|
|
return len(clientDataChannels[streamID])
|
|
}
|
|
|
|
// Serve SRT server
|
|
func Serve(cfg *Options, authBackend auth.Backend, forwardingChannel, webrtcChannel chan Packet) {
|
|
if !cfg.Enabled {
|
|
// SRT is not enabled, ignore
|
|
return
|
|
}
|
|
|
|
// Start SRT in listening mode
|
|
log.Printf("SRT server listening on %s", cfg.ListenAddress)
|
|
host, port := splitHostPort(cfg.ListenAddress)
|
|
sck := srtgo.NewSrtSocket(host, port, nil)
|
|
if err := sck.Listen(cfg.MaxClients); err != nil {
|
|
log.Fatal("Unable to listen for SRT clients:", err)
|
|
}
|
|
|
|
clientDataChannels = make(map[string][]chan Packet)
|
|
|
|
for {
|
|
// Wait for new connection
|
|
s, err := sck.Accept()
|
|
if err != nil {
|
|
// Something wrong happenned
|
|
continue
|
|
}
|
|
|
|
// streamid can be "name:password" for streamer or "name" for viewer
|
|
streamID, err := s.GetSockOptString(C.SRTO_STREAMID)
|
|
if err != nil {
|
|
log.Print("Failed to get socket streamid")
|
|
continue
|
|
}
|
|
split := strings.Split(streamID, ":")
|
|
|
|
if clientDataChannels[streamID] == nil {
|
|
clientDataChannels[streamID] = make([]chan Packet, 0, cfg.MaxClients)
|
|
}
|
|
|
|
if len(split) > 1 {
|
|
// password was provided so it is a streamer
|
|
name, password := split[0], split[1]
|
|
if authBackend != nil {
|
|
// check password
|
|
if ok, err := authBackend.Login(name, password); !ok || err != nil {
|
|
log.Printf("Failed to authenticate for stream %s", name)
|
|
s.Close()
|
|
continue
|
|
}
|
|
}
|
|
|
|
go handleStreamer(s, name, clientDataChannels, forwardingChannel, webrtcChannel)
|
|
} else {
|
|
// password was not provided so it is a viewer
|
|
name := split[0]
|
|
|
|
dataChannel := make(chan Packet, 4096)
|
|
clientDataChannels[streamID] = append(clientDataChannels[streamID], dataChannel)
|
|
|
|
go handleViewer(s, name, dataChannel, clientDataChannels)
|
|
}
|
|
}
|
|
}
|