OptionalmethodOptionalheadersOptionalbodyOptionalallowAllow http:// and private/loopback targets. Default false.
OptionaltimeoutOverall timeout including DNS + connect + body read. Default 10_000 ms.
OptionalmaxHard cap on response body bytes. Default 64 KiB.
OptionalsignalCaller-provided abort signal, composed with the internal timeout.
Lowercased keys preferred; values preserved verbatim.