about host thing when use kmac in kong -


when use kong kmac,code below,

  request req = request.post("http://172.16.1.82:8000/track/getstrategyviewv4"); req.addheader(new basicheader("host","172.16.1.37")); req.addheader(new basicheadenter code hereer("date",datestr)); req.addheader(new basicheader("authorization",authorization));

host api server host.
want know ,why need host in header,


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