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Make server not send anything if socket state is anything but open

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This commit is contained in:
Ayane Satomi 2023-10-23 09:09:00 +00:00
parent 4574557fdc
commit d00cf3a9c3
1 changed files with 7 additions and 2 deletions
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9
routes/index.tsx
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@ -20,7 +20,7 @@ export const handler: Handlers = {
GET: async (req, ctx) => {
let bc = new BroadcastChannel("global-count");
// check if we're requesting wss:// or ws://, add the response header accordingly
// check if we're requesting wss:// or ws://, then upgrade as necessary
if (req.headers.get("upgrade") === "websocket") {
const { socket, response } = Deno.upgradeWebSocket(req);
@ -34,7 +34,12 @@ export const handler: Handlers = {
};
bc.addEventListener("message", (e) => {
socket.send(JSON.stringify({ globalCount: e.data }));
try {
// don't send if the socket is closed
if (socket.readyState === 1) socket.send(JSON.stringify({ globalCount: e.data }));
} catch (e) {
console.warn(`[${new Date().toISOString()}] ${e.stack}`);
}
});
socket.onclose = () => {