php - Automated form submission to an external script -

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got question , i'm not sure it, thought i'd ask.

one of pages on server contains ordinary html form, designed contact external script form submission.

if open page, enter information in fields manually, , hit "process", external script will, naturally, record own ip address visitor.

what ip address record if automate form submission using server-side method, such curl? record server's ip address, since server sending automated request script, or record client's ip address, usual?

if rely on $_server["remote_addr"], record address sees in request, depends on how routing on server set up. if you're sending request localhost - record localhost (127.0.0.1) rather server`s external ip even.

if request originates visitor surfing web, have multiple options of keeping track:

  1. use standard x-forwarded-for header in sub-request , track track proxied request. (check if $_server["http_x_forwarded_for"] passed , use real address, otherwise fallback $_server["remote_addr"]).

  2. pass original ip custom parameter , track instead of remote_addr when request comes source (eg localhost).


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