We're having trouble connecting to local area network websockets in Safari in the latest iOS26 Beta 3 (iPhone 14), both secure and unsecure. Code works < iOS26 & macOS, etc.
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Unsecure behaviour: need to call connectWebSocket() twice, establishes connection reliably. Calling connectWebSocket() once, will sometimes work, sometimes not.
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Secure behaviour: Error in debug console, even though the certificate has been accepted and the page is loaded as https. Error:
WebSocket connection to 'wss://192.168.1.81/api/webSocket' failed: The certificate for this server is invalid. You might be connecting to a server that is pretending to be “192.168.1.81”, which could put your confidential information at risk.
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let apiEndpoint = window.location.hostname;
if (apiEndpoint == null || apiEndpoint == '') {
apiEndpoint = "192.168.1.81";
}
function connectWebSocket() {
if (webSocket && webSocket.readyState == 1) {
return;
}
if (webSocket) {
webSocket.close();
}
webSocket = new WebSocket(
(window.location.protocol === 'https:' ? "wss://" : "ws://") + apiEndpoint + "/api/webSocket",
);
webSocket.onerror = (error) => {
console.log("WebSocket error", error);
};
webSocket.onopen = () => {
console.log("WebSocket connected");
webSocket.send("volume");
webSocket.send("isPlaying");
};
webSocket.onmessage = (event) => {
const msg = event.data;
if (!msg) return;
if (msg.startsWith("volume")) {
const volume = parseInt(msg.replace('volume:',''));
const slider = document.getElementById("volumeSlider");
slider.value = volume;
slider.style.background = `linear-gradient(to right, #007bff ${volume}%, white ${volume}%)`;
} else if (msg.startsWith("isPlaying")) {
const url = msg.replace('isPlaying:', '');
let matchedEntry = null;
let coverToSelect = null;
categories.forEach((category, catIdx) => {
category.entries.forEach((entry, entryIdx) => {
if (entry.url === url) {
matchedEntry = entry;
coverToSelect = document.querySelector(`.cover[category-idx="${catIdx}"][entry-idx="${entryIdx}"]`);
}
});
});
if (matchedEntry && coverToSelect) {
selectCover(coverToSelect, true);
showNowPlayingBar(matchedEntry);
const top = coverToSelect.getBoundingClientRect().top + window.scrollY - 150;
window.scrollTo({ top, behavior: 'smooth' });
}
}
};
webSocket.onclose = () => {
console.log("WebSocket closed, retrying...");
setTimeout(connectWebSocket, 1000);
};
}
document.addEventListener("visibilitychange", () => {
if (document.visibilityState === "visible") {
connectWebSocket();
}
});
connectWebSocket();
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