echoip

A simple service for looking up your IP address. This is the code that powers https://ifconfig.co.

Usage

Just the business, please:

$ curl ifconfig.co
127.0.0.1

$ http ifconfig.co
127.0.0.1

$ wget -qO- ifconfig.co
127.0.0.1

$ fetch -qo- https://ifconfig.co
127.0.0.1

$ bat -print=b ifconfig.co/ip
127.0.0.1

Country and city lookup:

$ curl ifconfig.co/country
Elbonia

$ curl ifconfig.co/country-iso
EB

$ curl ifconfig.co/city
Bornyasherk

As JSON:

$ curl -H 'Accept: application/json' ifconfig.co  # or curl ifconfig.co/json
{
  "city": "Bornyasherk",
  "country": "Elbonia",
  "country_iso": "EB",
  "ip": "127.0.0.1",
  "ip_decimal": 2130706433
}

Port testing:

$ curl ifconfig.co/port/80
{
  "ip": "127.0.0.1",
  "port": 80,
  "reachable": false
}

Pass the appropriate flag (usually -4 and -6) to your client to switch between IPv4 and IPv6 lookup.

Features

Easy to remember domain name
Fast
Supports IPv6
Supports HTTPS
Supports common command-line clients (e.g. curl, httpie, wget and fetch)
JSON output
Country and city lookup using the MaxMind GeoIP database
Port testing
Open source under the BSD 3-Clause license

Why?

To scratch an itch
An excuse to use Go for something
Faster than ifconfig.me and has IPv6 support

Building

Compiling requires the Golang compiler to be installed. This package can be installed with go get:

go get github.com/mpolden/echoip/...

For more information on building a Go project, see the official Go documentation.

Usage

$ echoip -h
Usage:
  echoip [OPTIONS]

Application Options:
  -f, --country-db=FILE        Path to GeoIP country database
  -c, --city-db=FILE           Path to GeoIP city database
  -l, --listen=ADDR            Listening address (default: :8080)
  -r, --reverse-lookup         Perform reverse hostname lookups
  -p, --port-lookup            Enable port lookup
  -t, --template=FILE          Path to template (default: index.html)
  -H, --trusted-header=NAME    Header to trust for remote IP, if present (e.g. X-Real-IP)

Help Options:
  -h, --help                   Show this help message

License

junk13/echoip

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