refactor: split browser context/actions and unify CDP timeout policy

src/browser/cdp-timeouts.ts

@@ -0,0 +1,54 @@
+export const CDP_HTTP_REQUEST_TIMEOUT_MS = 1500;
+export const CDP_WS_HANDSHAKE_TIMEOUT_MS = 5000;
+export const CDP_JSON_NEW_TIMEOUT_MS = 1500;
+
+export const CHROME_REACHABILITY_TIMEOUT_MS = 500;
+export const CHROME_WS_READY_TIMEOUT_MS = 800;
+export const CHROME_BOOTSTRAP_PREFS_TIMEOUT_MS = 10_000;
+export const CHROME_BOOTSTRAP_EXIT_TIMEOUT_MS = 5000;
+export const CHROME_LAUNCH_READY_WINDOW_MS = 15_000;
+export const CHROME_LAUNCH_READY_POLL_MS = 200;
+export const CHROME_STOP_TIMEOUT_MS = 2500;
+export const CHROME_STOP_PROBE_TIMEOUT_MS = 200;
+export const CHROME_STDERR_HINT_MAX_CHARS = 2000;
+
+export const PROFILE_HTTP_REACHABILITY_TIMEOUT_MS = 300;
+export const PROFILE_WS_REACHABILITY_MIN_TIMEOUT_MS = 200;
+export const PROFILE_WS_REACHABILITY_MAX_TIMEOUT_MS = 2000;
+export const PROFILE_ATTACH_RETRY_TIMEOUT_MS = 1200;
+export const PROFILE_POST_RESTART_WS_TIMEOUT_MS = 600;
+
+function normalizeTimeoutMs(value: number | undefined): number | undefined {
+  if (typeof value !== "number" || !Number.isFinite(value)) {
+    return undefined;
+  }
+  return Math.max(1, Math.floor(value));
+}
+
+export function resolveCdpReachabilityTimeouts(params: {
+  profileIsLoopback: boolean;
+  timeoutMs?: number;
+  remoteHttpTimeoutMs: number;
+  remoteHandshakeTimeoutMs: number;
+}): { httpTimeoutMs: number; wsTimeoutMs: number } {
+  const normalized = normalizeTimeoutMs(params.timeoutMs);
+  if (params.profileIsLoopback) {
+    const httpTimeoutMs = normalized ?? PROFILE_HTTP_REACHABILITY_TIMEOUT_MS;
+    const wsTimeoutMs = Math.max(
+      PROFILE_WS_REACHABILITY_MIN_TIMEOUT_MS,
+      Math.min(PROFILE_WS_REACHABILITY_MAX_TIMEOUT_MS, httpTimeoutMs * 2),
+    );
+    return { httpTimeoutMs, wsTimeoutMs };
+  }
+
+  if (normalized !== undefined) {
+    return {
+      httpTimeoutMs: Math.max(normalized, params.remoteHttpTimeoutMs),
+      wsTimeoutMs: Math.max(normalized * 2, params.remoteHandshakeTimeoutMs),
+    };
+  }
+  return {
+    httpTimeoutMs: params.remoteHttpTimeoutMs,
+    wsTimeoutMs: params.remoteHandshakeTimeoutMs,
+  };
+}