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map $http_upgrade $connection_upgrade {
default Upgrade;
'' close;
}
server {
listen 80;
include autossl.conf;
set_real_ip_from 192.168.1.0/24;
real_ip_header X-Real-IP;
real_ip_recursive on;
location / {
set $target '';
set $target_scheme 'http';
set $target_port '';
set $header_host $host;
access_by_lua '
local host = ngx.var.host
local uri = ngx.var.uri
local scheme = ngx.var.scheme
if not host then
ngx.log(ngx.ERR, "no host header found")
return ngx.exit(499)
end
local redis = require "resty.redis"
local red = redis:new()
red:set_timeout(1000) -- 1 second
local ok, err = red:connect("127.0.0.1", 6379)
if not ok then
ngx.log(ngx.ERR, "failed to connect to redis: ", err)
return ngx.exit(598)
end
local res, err = red:hgetall("proxy_host_"..host)
local res = red:array_to_hash(res)
if not res["ip"] then
ngx.log(ngx.ERR, "no host found for key ", host)
return ngx.exit(406)
end
if scheme == "http" then
if res["forcessl"] == "true" then
return ngx.redirect("https://"..host..uri, 301)
end
end
if res["targetssl"] == "true" then
ngx.var.target_scheme = "https"
end
if res["host-pass-though"] == "false" then
ngx.var.header_host = res["ip"]
end
ngx.var.target = res["ip"]
ngx.var.target_port = res["targetPort"]
';
resolver 192.168.1.1 ipv6=off; #8.8.4.4; # use Google's open DNS server
proxy_http_version 1.1;
proxy_pass_request_headers on;
proxy_pass $target_scheme://$target:$target_port;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_ssl_session_reuse on;
proxy_intercept_errors off;
proxy_set_header Host $header_host;
add_header X-Target-Host $target;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $target_scheme;
proxy_set_header Referer $target_scheme://$header_host;
proxy_set_header Accept-Language $http_accept_language;
proxy_set_header User-Agent $http_user_agent;
sub_filter $target $host;
sub_filter_once off;
}
}