interface OutgoingHttpHeadersextends[NodeJS.Dict]<OutgoingHttpHeader> ,Propertiesoptionalaccept: string | string[] | undefinedoptionalaccept-charset: string | string[] | undefinedoptionalaccept-encoding: string | string[] | undefinedoptionalaccept-language: string | string[] | undefinedoptionalaccept-ranges: string | undefinedoptionalaccess-control-allow-credentials: string | undefinedoptionalaccess-control-allow-headers: string | undefinedoptionalaccess-control-allow-methods: string | undefinedoptionalaccess-control-allow-origin: string | undefinedoptionalaccess-control-expose-headers: string | undefinedoptionalaccess-control-max-age: string | undefinedoptionalaccess-control-request-headers: string | undefinedoptionalaccess-control-request-method: string | undefinedoptionalage: string | undefinedoptionalallow: string | undefinedoptionalauthorization: string | undefinedoptionalcache-control: string | undefinedoptionalcdn-cache-control: string | undefinedoptionalconnection: string | string[] | undefinedoptionalcontent-disposition: string | undefinedoptionalcontent-encoding: string | undefinedoptionalcontent-language: string | undefinedoptionalcontent-length: string | number | undefinedoptionalcontent-location: string | undefinedoptionalcontent-range: string | undefinedoptionalcontent-security-policy: string | undefinedoptionalcontent-security-policy-report-only: string | undefinedoptionalcookie: string | string[] | undefinedoptionaldav: string | string[] | undefinedoptionaldnt: string | undefinedoptionaldate: string | undefinedoptionaletag: string | undefinedoptionalexpect: string | undefinedoptionalexpires: string | undefinedoptionalforwarded: string | undefinedoptionalfrom: string | undefinedoptionalhost: string | undefinedoptionalif-match: string | undefinedoptionalif-modified-since: string | undefinedoptionalif-none-match: string | undefinedoptionalif-range: string | undefinedoptionalif-unmodified-since: string | undefinedoptionallast-modified: string | undefinedoptionallink: string | string[] | undefinedoptionallocation: string | undefinedoptionalmax-forwards: string | undefinedoptionalorigin: string | undefinedoptionalprgama: string | string[] | undefinedoptionalproxy-authenticate: string | string[] | undefinedoptionalproxy-authorization: string | undefinedoptionalpublic-key-pins: string | undefinedoptionalpublic-key-pins-report-only: string | undefinedoptionalrange: string | undefinedoptionalreferer: string | undefinedoptionalreferrer-policy: string | undefinedoptionalrefresh: string | undefinedoptionalretry-after: string | undefinedoptionalsec-websocket-accept: string | undefinedoptionalsec-websocket-extensions: string | string[] | undefinedoptionalsec-websocket-key: string | undefinedoptionalsec-websocket-protocol: string | string[] | undefinedoptionalsec-websocket-version: string | undefinedoptionalserver: string | undefinedoptionalset-cookie: string | string[] | undefinedoptionalstrict-transport-security: string | undefinedoptionalte: string | undefinedoptionaltrailer: string | undefinedoptionaltransfer-encoding: string | undefinedoptionaluser-agent: string | undefinedoptionalupgrade: string | undefinedoptionalupgrade-insecure-requests: string | undefinedoptionalvary: string | undefinedoptionalvia: string | string[] | undefinedoptionalwarning: string | undefinedoptionalwww-authenticate: string | string[] | undefinedoptionalx-content-type-options: string | undefinedoptionalx-dns-prefetch-control: string | undefinedoptionalx-frame-options: string | undefinedoptionalx-xss-protection: string | undefined