ghostream/stream/srt/srt.go

102 lines
2.3 KiB
Go

// Package srt serves a SRT server
package srt
// #include <srt/srt.h>
import "C"
import (
"log"
"net"
"strconv"
"strings"
"github.com/haivision/srtgo"
"gitlab.crans.org/nounous/ghostream/auth"
"gitlab.crans.org/nounous/ghostream/stream"
)
// Options holds web package configuration
type Options struct {
Enabled bool
ListenAddress string
MaxClients int
}
// Split host and port from listen address
func splitHostPort(hostport string) (string, uint16, error) {
host, portS, err := net.SplitHostPort(hostport)
if err != nil {
return "", 0, err
}
if host == "" {
host = "0.0.0.0"
}
port64, err := strconv.ParseUint(portS, 10, 16)
if err != nil {
return "", 0, err
}
return host, uint16(port64), nil
}
// Serve SRT server
func Serve(streams map[string]stream.Stream, authBackend auth.Backend, cfg *Options) {
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, err := splitHostPort(cfg.ListenAddress)
if err != nil {
log.Fatalf("Failed to split host and port from %s", cfg.ListenAddress)
}
options := make(map[string]string)
options["blocking"] = "0"
options["transtype"] = "live"
sck := srtgo.NewSrtSocket(host, port, options)
if err := sck.Listen(cfg.MaxClients); err != nil {
log.Fatal("Unable to listen for SRT clients:", err)
}
for {
// Wait for new connection
s, err := sck.Accept()
if err != nil {
// Something wrong happened
log.Println(err)
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 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, streams, name)
} else {
// password was not provided so it is a viewer
name := split[0]
// Send stream
go handleViewer(s, streams, name)
}
}
}