#!/usr/bin/awk -f

function handle_request(url, ip_fqdn, ident, method, kv)
{
    if (index(url, "http://proxy/") == 1) {
        sub(/http:\/\/proxy\//, "http://127.0.0.1:9999/", url)
        return "OK rewrite-url=" url
    }
    return "OK"
}

$1 ~ /^[0-9]+$/ {request_id=$1 " "; request_url=$2; request_ip_fqdn=$3, request_ident=$4, request_method=$5, first_pair=6}
$1 !~ /^[0-9]+$/ {request_id=""; request_url=$1; request_ip_fqdn=$2, request_ident=$3, request_method=$4, first_pair=5}
{
    split("", kv);
    for (i=first_pair; i<=NF; i++) {
        split($i, parts, sep="=")
        kv[parts[1]]=parts[2]
    }
    print request_id handle_request(request_url, request_ip_fqdn, request_ident, request_method, kv)
}