Closed
Description
Tried the below:
package main
import (
"context"
"fmt"
"log"
"net/http"
"time"
"nhooyr.io/websocket"
"nhooyr.io/websocket/wsjson"
)
func main() {
http.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Println("call done")
setupCORS(&w, r)
c, err := websocket.Accept(w, r, nil)
if err != nil {
fmt.Println(err)
}
defer c.Close(websocket.StatusInternalError, "the sky is falling")
ctx, cancel := context.WithTimeout(r.Context(), time.Second*10)
defer cancel()
var v interface{}
err = wsjson.Read(ctx, c, &v)
if err != nil {
fmt.Println(err)
}
log.Printf("received: %v", v)
c.Close(websocket.StatusNormalClosure, "")
}))
if err := http.ListenAndServe(":1234", nil); err != nil {
log.Fatal("ListenAndServe:", err)
}
}
func setupCORS(w *http.ResponseWriter, req *http.Request) {
(*w).Header().Set("Access-Control-Allow-Origin", "*")
(*w).Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
(*w).Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
}With the below html file:
<html>
<head></head>
<body>
<script type="text/javascript">
var sock = null;
var wsuri = "ws://localhost:1234/";
window.onload = function() {
console.log("onload");
sock = new WebSocket(wsuri);
sock.onopen = function() {
console.log("connected to " + wsuri);
}
sock.onclose = function(e) {
console.log("connection closed (" + e.code + ")");
}
sock.onmessage = function(e) {
console.log("message received: " + e.data);
}
};
function send() {
var msg = document.getElementById('message').value;
sock.send(msg);
};
</script>
<h1>WebSocket Echo Test</h1>
<form>
<p>
Message: <input id="message" type="text" value="Hello, world!">
</p>
</form>
<button onclick="send();">Send Message</button>
</body>
</html>
But got the below error:
PS D:\Deployment\websocket> go run main.go
call done
failed to accept WebSocket connection: request Origin "null" is not authorized for Host "localhost:1234"
2022/06/11 17:50:38 http: panic serving [::1]:55059: runtime error: invalid memory address or nil pointer dereference
goroutine 19 [running]:
net/http.(*conn).serve.func1()
D:/Development/go/src/net/http/server.go:1825 +0xbf
panic({0xa17580, 0xc35d00})
D:/Development/go/src/runtime/panic.go:844 +0x258
nhooyr.io/websocket.(*Conn).writeClose(0x0, 0x3f3, {0xa549a5, 0x12})
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/close_notjs.go:54 +0x51
nhooyr.io/websocket.(*Conn).closeHandshake(0xc000024140?, 0xaca8b0?, {0xa549a5?, 0xc00005a0d0?})
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/close_notjs.go:37 +0x7a
nhooyr.io/websocket.(*Conn).Close(0xc00005a0c0?, 0x1?, {0xa549a5?, 0xc0000880c0?})
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/close_notjs.go:31 +0x1e
panic({0xa17580, 0xc35d00})
D:/Development/go/src/runtime/panic.go:838 +0x207
nhooyr.io/websocket.(*Conn).reader(0x0, {0xacb920, 0xc00005a0c0})
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/read.go:303 +0xa4
nhooyr.io/websocket.(*Conn).Reader(...)
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/read.go:30
nhooyr.io/websocket/wsjson.read({0xacb920?, 0xc00005a0c0?}, 0xc0000919d0?, {0xa03340, 0xc00004c170})
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/wsjson/wsjson.go:23 +0xa5
nhooyr.io/websocket/wsjson.Read(...)
D:/Development/gopath/pkg/mod/nhooyr.io/websocket@v1.8.7/wsjson/wsjson.go:17
main.main.func1({0xacb7c0, 0xc000070000}, 0xc00006a000)
D:/Deployment/websocket/main.go:28 +0x1c5
net/http.HandlerFunc.ServeHTTP(0x266ab65a648?, {0xacb7c0?, 0xc000070000?}, 0x7cd0e5?)
D:/Development/go/src/net/http/server.go:2084 +0x2f
net/http.(*ServeMux).ServeHTTP(0x0?, {0xacb7c0, 0xc000070000}, 0xc00006a000)
D:/Development/go/src/net/http/server.go:2462 +0x149
net/http.serverHandler.ServeHTTP({0xc000020060?}, {0xacb7c0, 0xc000070000}, 0xc00006a000)
D:/Development/go/src/net/http/server.go:2916 +0x43b
net/http.(*conn).serve(0xc00008caa0, {0xacb958, 0xc0000c2ed0})
D:/Development/go/src/net/http/server.go:1966 +0x5d7
created by net/http.(*Server).Serve
D:/Development/go/src/net/http/server.go:3071 +0x4dbMetadata
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