sseserver
This is a golang library for creating web services that generate streams of
Server-Sent Events.
Example usage:
package sseserver_test
import (
"fmt"
"net/http"
"strconv"
"time"
"bitbucket.org/advbet/sseserver"
)
func eventSource(stream sseserver.Stream) {
for i := 0; true; i++ {
stream.Publish(&sseserver.Event{
ID: strconv.Itoa(i),
Event: "counter",
Data: map[string]interface{}{
"msg": "ticks since start",
"val": i,
},
})
time.Sleep(time.Second)
}
}
func main() {
stream := sseserver.NewCached("", sseserver.DefaultConfig, 5*time.Minute, time.Minute)
go eventSource(stream)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
id := r.Header.Get("Last-Event-ID")
if err := stream.Subscribe(w, id); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
})
fmt.Println(http.ListenAndServe(":8000", nil))
// Test with:
// curl http://localhost:8000/
// curl -H "Last-Event-ID: 5" http://localhost:8000/
}