Created
March 2, 2015 18:45
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Server-Sent Events example
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| package main | |
| import ( | |
| "log" | |
| "net/http" | |
| "strconv" | |
| "time" | |
| "gopkg.in/antage/eventsource.v1" | |
| ) | |
| func main() { | |
| es := eventsource.New(nil, nil) | |
| defer es.Close() | |
| http.Handle("/events", es) | |
| go func() { | |
| id := 1 | |
| for { | |
| es.SendEventMessage("tick\n", "", strconv.Itoa(id)) | |
| id++ | |
| time.Sleep(time.Second) | |
| } | |
| }() | |
| http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { | |
| w.Write([]byte(`<html> | |
| <pre></pre> | |
| <script> | |
| window.addEventListener("load", function() { | |
| var evtSource = new EventSource("/events"); | |
| evtSource.onmessage = function(e) { | |
| var element = document.getElementsByTagName("pre")[0]; | |
| element.insertAdjacentHTML("beforeend", e.data); | |
| } | |
| }) | |
| </script> | |
| </html>`)) | |
| }) | |
| log.Fatal(http.ListenAndServe(":8080", nil)) | |
| } |
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