ghostream/web/web.go

108 lines
2.4 KiB
Go

// Package web serves the JavaScript player and WebRTC negotiation
package web
import (
"html/template"
"io/ioutil"
"log"
"net/http"
"os"
"strings"
"github.com/markbates/pkger"
"github.com/pion/webrtc/v3"
"gitlab.crans.org/nounous/ghostream/stream"
)
// Options holds web package configuration
type Options struct {
Enabled bool
CustomCSS string
Favicon string
Hostname string
ListenAddress string
Name string
MapDomainToStream map[string]string
PlayerPoster string
SRTServerPort string
STUNServers []string
ViewersCounterRefreshPeriod int
WidgetURL string
}
var (
cfg *Options
// WebRTC session description channels
remoteSdpChan chan struct {
StreamID string
RemoteDescription webrtc.SessionDescription
}
localSdpChan chan webrtc.SessionDescription
// Preload templates
templates *template.Template
// Streams to get statistics
streams map[string]*stream.Stream
)
// Load templates with pkger
// templates will be packed in the compiled binary
func loadTemplates() error {
templates = template.New("")
return pkger.Walk("/web/template", func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
// Skip non-templates
if info.IsDir() || !strings.HasSuffix(path, ".html") {
return nil
}
// Open file with pkger
f, err := pkger.Open(path)
if err != nil {
return err
}
// Read and parse template
temp, err := ioutil.ReadAll(f)
if err != nil {
return err
}
templates, err = templates.Parse(string(temp))
return err
})
}
// Serve HTTP server
func Serve(s map[string]*stream.Stream, rSdpChan chan struct {
StreamID string
RemoteDescription webrtc.SessionDescription
}, lSdpChan chan webrtc.SessionDescription, c *Options) {
streams = s
remoteSdpChan = rSdpChan
localSdpChan = lSdpChan
cfg = c
if !cfg.Enabled {
// Web server is not enabled, ignore
return
}
// Load templates
if err := loadTemplates(); err != nil {
log.Fatalln("Failed to load templates:", err)
}
// Set up HTTP router and server
mux := http.NewServeMux()
mux.HandleFunc("/", viewerHandler)
mux.Handle("/static/", staticHandler())
mux.HandleFunc("/_stats/", statisticsHandler)
log.Printf("HTTP server listening on %s", cfg.ListenAddress)
log.Fatal(http.ListenAndServe(cfg.ListenAddress, mux))
}