Function toGuardResolver

packages/core/sdk/src/hosted-http-client.ts:261–272

(resolve: HostedHostnameResolver)

// validateHostedOutboundUrl — from having a second copy of the rule.
const toGuardResolver =
  (resolve: HostedHostnameResolver): GuardResolver =>
  (hostname) =>
    Effect.tryPromise({
      try: (signal) => resolve(hostname, signal),
      catch: () => new HostedHostnameResolutionFailed({ hostname, empty: false }),
    }).pipe(
      Effect.flatMap((addresses) =>
        addresses.length === 0
          ? Effect.fail(new HostedHostnameResolutionFailed({ hostname, empty: true }))
          : Effect.succeed(addresses),
      ),
    );

const DNS_CACHE_TTL_MILLIS = 60_000;
const DNS_CACHE_CAPACITY = 256;