OptionalbaseBase URL of the API. Defaults to https://www.abgeordnetenwatch.de. Must be an absolute http(s) URL without a query, fragment or surrounding whitespace (baseUrlProblem); anything else throws at construction.
OptionalheadersExtra headers sent on every request to the configured origin. When a redirect
the engine follows crosses to a different origin, all of them are dropped (only
the engine's own Accept and User-Agent go along), so no credential —
Authorization, Proxy-Authorization, Cookie, X-API-Key, X-Auth-Token or any
other — leaks to an arbitrary host named in Location. That holds only while the
transport leaves redirects to the engine (HttpRequest.redirect is "manual"); a
response whose HttpResponse.url lies on another origin is rejected. Names must
be HTTP tokens and values follow the userAgent rule; anything else throws
AwValidationError at construction.
OptionalmaxNumber of HTTP redirects (301/302/303/307/308) to follow, 0..20. Defaults to 5. Any other 3xx, one with a missing or malformed Location, and one past this limit surface as an AwApiError naming the target.
OptionalmaxHard cap on response body size in bytes (defends against memory exhaustion from a hostile/buggy endpoint). Defaults to 100 MiB; set to 0 for no limit. Enforced by the engine for every transport.
OptionalmaxNumber of automatic retries for transient (429/503) responses and for a GET whose
connection was reset (see isTransientNetworkError), 0..MAX_RETRIES (10).
Each waits retryDelayMs * attempt, or a 429/503's Retry-After when that is
longer (up to MAX_RETRY_AFTER_MS; a longer one is not retried, and the AwApiError
says so and carries it as retryAfterMs).
OptionalonCalled once per retry, right before the backoff sleep, for each retried 429/503 and reset connection; never when there is no retry. A throw is swallowed.
OptionalretryBase backoff between retries in milliseconds (grows linearly: 1 s, 2 s, ... by
default). The upstream rate limiter answers a burst with 429s and no
Retry-After for about 1–2 s, so the default outlasts that window. At most
MAX_RETRY_AFTER_MS. It is also the floor under a Retry-After: the header can
lengthen a wait, never shorten it.
OptionalsleepInjectable sleep, primarily for deterministic tests.
OptionaltimeoutTime limit per request in milliseconds, covering the whole response body, not
only idle gaps (0 disables; at most MAX_TIMEOUT_MS, 2^31 - 1 ms). Enforced by
the engine for every transport.
OptionaltransportSwappable transport. Defaults to the built-in node http/https transport.
OptionaluserValue of the User-Agent header. Must not be blank, nor contain control characters (tab aside) or characters above U+00FF; such a value throws AwValidationError at construction.
Options for RequestEngine and the client. The numeric options must be integers within their documented range; anything else (negative, fractional, NaN, Infinity, too large, not a number) makes the constructor throw an AwValidationError, as does an options value that is not an object, a
transportorsleepthat is not a function, andheadersthat are not a plain object.