request-ip.node.txt

                                  ┏━━━━━━━━━━━━━━━━┓
                                  ┃   REQUEST-IP   ┃
                                  ┗━━━━━━━━━━━━━━━━┛

VERSION ==>                       #3.3.0

REQUESTIP.getClientIp(REQ)->'IP'  #Returns client IP, beyond proxies, or null if cannot find.
                                  #Tries, in order (see HTTP doc for more info):
                                  #  - X-Client-IP [C]
                                  #  - X-Forwarded-For [C]
                                  #  - CF-Connecting-IP [C] (Cloudflare)
                                  #  - Fastly-Client-Ip [C] (Fastly and Firebase)
                                  #  - True-Client-Ip [C] (Akamai and Cloudflare)
                                  #  - X-Real-IP [C] (Nginx/FastCGI)
                                  #  - X-Cluster-Client-IP [C] (Rackspace, Riverbed Stringray)
                                  #  - X-Forwarded [C], Forwarded-For [C]
                                  #  - X-Appengine-User-Ip [C] (Google App Engine)
                                  #  - REQ.connection.remoteAddress, REQ.connection.socket.remoteAddress,
                                  #    REQ.socket.remoteAddress, REQ.info.remoteAddress
                                  #  - REQ.requestContext.identity.sourceIp (AWS Lambda)
                                  #  - Cf-Pseudo-IPv4 (Cloudflare fallback)
                                  #  - recurse on REQ.raw REQ2 (Fastify)
                                  #Does not return if not a valid IPv4|IPv6

REQUESTIP.mw([OPTS])->MDW         #Same but as Connect MDW, settings REQ.ATTR = IP
                                  #ATTR is OPTS.attributeName (def: 'clientIp')