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Get public IP in nginx #7223

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Merged
isaacsolo merged 2 commits into from
Jan 17, 2024
Merged

Get public IP in nginx #7223

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511226f
Get public IP and port info
Jan 17, 2024
d785139
add boolean
Jan 17, 2024
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6 changes: 3 additions & 3 deletions packages/discovery-provider/nginx_conf/nginx.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -320,14 +320,14 @@ http {
resolver 127.0.0.11 valid=30s;
content_by_lua_block {
local port = require "port"
local ip = port.get_public_ip()
local can_get_ip, ip = port.get_public_ip()
local can_connect = port.get_is_port_exposed(ip, 30300)
if can_connect then
if can_get_ip and can_connect then
ngx.status = ngx.HTTP_OK
else
ngx.status = ngx.HTTP_INTERNAL_SERVER_ERROR
end
ngx.say(can_connect)
ngx.say(ip .. "\n" .. tostring(can_connect))
}
}

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31 changes: 22 additions & 9 deletions packages/discovery-provider/nginx_conf/port.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -6,17 +6,30 @@ local _M = {}

function _M.get_public_ip()
local httpc = http.new()
local res, err = httpc:request_uri("http://ipv4.icanhazip.com")
local ip_services = {
"http://ipv4.icanhazip.com",
"http://ipv4bot.whatismyipaddress.com",
"http://checkip.amazonaws.com",
"http://ipinfo.io/ip",
"http://api.ipify.org"
}

if not res then
ngx.log(ngx.ERR, "error: ", err)
return nil
for _, url in ipairs(ip_services) do
local res, err = httpc:request_uri(url)
if res then
local ip = res.body
ip = string.gsub(ip, "\\", "")
ip = string.gsub(ip, " ", "")
ip = string.gsub(ip, "\n", "")
if ip and ip ~= "" then
return true, ip
end
else
ngx.log(ngx.ERR, "Error contacting ", url, ": ", err)
end
end
local ip = res.body
ip = string.gsub(ip, "\\", "")
ip = string.gsub(ip, " ", "")
ip = string.gsub(ip, "\n", "")
return ip

return false, "Could not get external IP"
end

function _M.get_is_port_exposed(ip, port)
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