mostlygeek/main.go

## main.go
package main

/*
This was entirely generated by GPT4 with the prompt:

write me a simple golang server demonstrating server sent events (sse)

*/

import (
	"fmt"
	"net/http"
	"time"
)

func main() {
	http.HandleFunc("/", serveHome)
	http.HandleFunc("/sse", serveSSE)
	http.ListenAndServe(":8080", nil)
}

func serveHome(w http.ResponseWriter, r *http.Request) {
	html := `<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Server-Sent Events Demo</title>
</head>
<body>
    <h1>Server-Sent Events Demo</h1>
    <div id="events"></div>

    <script>
        const eventSource = new EventSource("/sse");

        eventSource.onmessage = (event) => {
            const eventsDiv = document.getElementById("events");
            eventsDiv.innerHTML += "<p>" + event.data + "</p>";
        };

        eventSource.onerror = () => {
            console.error("Error occurred in EventSource connection.");
        };
    </script>
</body>
</html>`
	w.Header().Set("Content-Type", "text/html")
	w.Write([]byte(html))
}

func serveSSE(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "text/event-stream")
	w.Header().Set("Cache-Control", "no-cache")
	w.Header().Set("Connection", "keep-alive")

	flusher, ok := w.(http.Flusher)
	if !ok {
		http.Error(w, "Streaming unsupported!", http.StatusInternalServerError)
		return
	}

	for i := 1; ; i++ {
		fmt.Fprintf(w, "data: Message %d from server\n\n", i)
		flusher.Flush()
		time.Sleep(time.Second)
	}

}
	package main

	/*
	This was entirely generated by GPT4 with the prompt:

	write me a simple golang server demonstrating server sent events (sse)

	*/

	import (
	"fmt"
	"net/http"
	"time"
	)

	func main() {
	http.HandleFunc("/", serveHome)
	http.HandleFunc("/sse", serveSSE)
	http.ListenAndServe(":8080", nil)
	}

	func serveHome(w http.ResponseWriter, r *http.Request) {
	html := `<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Server-Sent Events Demo</title>
	</head>
	<body>
	<h1>Server-Sent Events Demo</h1>
	<div id="events"></div>

	<script>
	const eventSource = new EventSource("/sse");

	eventSource.onmessage = (event) => {
	const eventsDiv = document.getElementById("events");
	eventsDiv.innerHTML += "<p>" + event.data + "</p>";
	};

	eventSource.onerror = () => {
	console.error("Error occurred in EventSource connection.");
	};
	</script>
	</body>
	</html>`
	w.Header().Set("Content-Type", "text/html")
	w.Write([]byte(html))
	}

	func serveSSE(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "text/event-stream")
	w.Header().Set("Cache-Control", "no-cache")
	w.Header().Set("Connection", "keep-alive")

	flusher, ok := w.(http.Flusher)
	if !ok {
	http.Error(w, "Streaming unsupported!", http.StatusInternalServerError)
	return
	}

	for i := 1; ; i++ {
	fmt.Fprintf(w, "data: Message %d from server\n\n", i)
	flusher.Flush()
	time.Sleep(time.Second)
	}

	}