fix: keep Cloud Web alive on client disconnect
This commit is contained in:
Codex Agent
@@ -18,8 +18,16 @@ const GZIP_MIN_BYTES = 1024;
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const DEFAULT_AUTH_USERNAME = "admin";
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const DEFAULT_AUTH_PASSWORD = "hwlab2026";
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const DEFAULT_WORKBENCH_PROJECT_ID = "prj_hwpod_workbench";
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const CLIENT_DISCONNECT_ERROR_CODES = new Set([
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"ECONNRESET",
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"EPIPE",
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"ERR_STREAM_PREMATURE_CLOSE"
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]);
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const CLIENT_DISCONNECT_ERROR_PATTERN = /\b(?:socket hang up|client disconnected|premature close)\b/iu;
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const CLOUD_WEB_ERROR_HANDLER_INSTALLED = Symbol.for("hwlab.cloud-web.error-handler-installed");
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export async function serveCloudWeb(options) {
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installCloudWebProcessErrorHandlers({ serviceId: options.serviceId });
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const server = createCloudWebServer(options);
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server.listen(options.port, "0.0.0.0", () => {
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process.stdout.write(JSON.stringify({
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@@ -43,50 +51,130 @@ export function createCloudWebServer({
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})
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}) {
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return createServer(async (request, response) => {
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attachRequestErrorHandlers({ request, response, serviceId });
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const url = new URL(request.url || "/", "http://hwlab-cloud-web.local");
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if (url.pathname === "/health/live" || url.pathname === "/health") {
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sendJson(response, 200, healthPayload());
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return;
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}
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if (await handleCloudWebAuth({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson })) {
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return;
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}
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const proxyPolicy = cloudWebProxyRoutePolicy(request.method, url.pathname);
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if (proxyPolicy.proxy) {
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await proxyCloudApi({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson });
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return;
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}
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const routePath = url.pathname.replace(/\/+$/u, "") || "/";
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const relativePath = routePath === "/" || routePath === "/gate" || routePath === "/diagnostics/gate" || routePath === "/help" || routePath === "/skills" || routePath === "/access"
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? "index.html"
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: url.pathname.slice(1);
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for (const root of roots) {
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const candidate = path.resolve(root, relativePath);
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if (!candidate.startsWith(root)) continue;
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try {
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const info = await stat(candidate);
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if (!info.isFile()) continue;
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const body = await readFile(candidate);
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const type = contentType(candidate);
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const encoded = await encodeStaticBody(request, body, type);
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response.writeHead(200, {
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"content-type": type,
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...encoded.headers,
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"content-length": encoded.body.length
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});
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response.end(encoded.body);
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try {
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if (url.pathname === "/health/live" || url.pathname === "/health") {
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sendJson(response, 200, healthPayload());
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return;
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}
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if (await handleCloudWebAuth({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson })) {
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return;
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} catch {
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// Try the next root.
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}
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}
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sendJson(response, 404, { error: "not_found", serviceId, path: url.pathname });
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const proxyPolicy = cloudWebProxyRoutePolicy(request.method, url.pathname);
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if (proxyPolicy.proxy) {
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await proxyCloudApi({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson });
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return;
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}
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const routePath = url.pathname.replace(/\/+$/u, "") || "/";
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const relativePath = routePath === "/" || routePath === "/gate" || routePath === "/diagnostics/gate" || routePath === "/help" || routePath === "/skills" || routePath === "/access"
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? "index.html"
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: url.pathname.slice(1);
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for (const root of roots) {
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const candidate = path.resolve(root, relativePath);
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if (!candidate.startsWith(root)) continue;
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try {
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const info = await stat(candidate);
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if (!info.isFile()) continue;
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const body = await readFile(candidate);
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const type = contentType(candidate);
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const encoded = await encodeStaticBody(request, body, type);
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response.writeHead(200, {
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"content-type": type,
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...encoded.headers,
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"content-length": encoded.body.length
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});
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response.end(encoded.body);
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return;
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} catch (error) {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, request, error });
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return;
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}
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// Try the next root for ordinary filesystem misses.
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}
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}
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sendJson(response, 404, { error: "not_found", serviceId, path: url.pathname });
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} catch (error) {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, request, error });
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return;
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}
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if (!response.headersSent && !response.writableEnded) {
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sendJson(response, 500, {
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error: "internal_error",
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serviceId,
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message: error instanceof Error ? error.message : String(error)
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});
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return;
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}
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response.destroy(error);
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}
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});
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}
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export function installCloudWebProcessErrorHandlers({ serviceId } = {}) {
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if (process[CLOUD_WEB_ERROR_HANDLER_INSTALLED]) return;
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process[CLOUD_WEB_ERROR_HANDLER_INSTALLED] = true;
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process.on("uncaughtException", (error) => {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, error, source: "uncaughtException" });
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return;
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}
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logCloudWebRuntimeEvent("cloud-web-runtime-fatal", { serviceId, error, source: "uncaughtException" });
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process.exit(1);
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});
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process.on("unhandledRejection", (reason) => {
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const error = reason instanceof Error ? reason : new Error(String(reason));
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, error, source: "unhandledRejection" });
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return;
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}
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logCloudWebRuntimeEvent("cloud-web-runtime-fatal", { serviceId, error, source: "unhandledRejection" });
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process.exit(1);
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});
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}
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function attachRequestErrorHandlers({ request, response, serviceId }) {
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const handle = (error) => {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, request, error });
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return;
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}
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throw error;
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};
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request.on("error", handle);
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response.on("error", handle);
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}
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export function isClientDisconnectError(error) {
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const candidate = error instanceof Error ? error : new Error(String(error));
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const code = typeof candidate.code === "string" ? candidate.code : "";
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return CLIENT_DISCONNECT_ERROR_CODES.has(code) || CLIENT_DISCONNECT_ERROR_PATTERN.test(candidate.message || "");
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}
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function logCloudWebRuntimeEvent(event, { serviceId, request = null, error = null, source = null } = {}) {
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const payload = {
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event,
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serviceId: serviceId || "hwlab-cloud-web",
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source,
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method: request?.method || null,
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path: request?.url || null,
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error: error
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? {
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name: error.name || "Error",
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code: typeof error.code === "string" ? error.code : null,
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message: error.message || String(error)
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}
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: null,
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observedAt: new Date().toISOString()
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};
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process.stderr.write(JSON.stringify(payload) + "\n");
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}
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export async function handleCloudWebAuth(options) {
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const { request, response, url } = options;
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if (url.pathname === "/auth/workspace-bootstrap" && request.method === "GET") {
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