Refactor Mihomo WebSocket URL handling and improve Svelte data processing

- Updated the `mihomoWsUrl` function to handle cases where the gateway base URL may be undefined, ensuring robust WebSocket URL generation.
- Enhanced the Svelte component to read and process memory metrics more reliably by implementing a mechanism to capture multiple lines of data before concluding the read operation, improving data accuracy.

web/src/lib/api/client.ts

@@ -27,8 +27,11 @@ export function mihomoUrl(alias: string, path: string): string {
  */
 export function mihomoWsUrl(alias: string, path: string): string {
 	const p = path.replace(/^\/+/, '');
-	const base = gatewayBase();
-	const wsBase = base.replace(/^http/, 'ws');
+	const base =
+		gatewayBase() || (typeof window !== 'undefined' ? window.location.origin.replace(/\/$/, '') : '');
+	let wsBase = base;
+	if (wsBase.startsWith('https://')) wsBase = `wss://${wsBase.slice('https://'.length)}`;
+	else if (wsBase.startsWith('http://')) wsBase = `ws://${wsBase.slice('http://'.length)}`;
 	return `${wsBase}/api/${encodeURIComponent(alias)}/mihomo/${p}`;
 }
 

web/src/routes/servers/[alias]/mihomo/+page.svelte

@@ -190,6 +190,7 @@
 		const reader = res.body.getReader();
 		const decoder = new TextDecoder();
 		let buf = '';
+		let seen = 0;
 		try {
 			while (!signal.aborted) {
 				const { done, value } = await reader.read();
@@ -198,17 +199,21 @@
 				const nl = buf.indexOf('\n');
 				if (nl < 0) continue;
 				const line = buf.slice(0, nl).trim();
+				buf = buf.slice(nl + 1);
 				if (line) {
 					try {
 						const o = JSON.parse(line) as { inuse?: number };
 						memKB = Number(o.inuse) || 0;
 						histMem = [...histMem, memKB];
 						while (histMem.length > MAX_POINTS) histMem.shift();
+						seen++;
 					} catch {
 						/* ignore */
 					}
 				}
-				break;
+				// В Mihomo для /memory первая строка нередко 0 после нового подключения.
+				// Берём хотя бы две строки в рамках одного запроса, затем завершаем.
+				if (seen >= 2) break;
 			}
 		} finally {
 			try {