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Description

Telize is a REST API built in Go allowing to get a visitor IP address and to query location information from any IP address. It outputs JSON-encoded IP geolocation data, and supports both JSON and JSONP.

Geolocation operations are performed using the MaxMind DB Reader for Go which caches the database in RAM. Therefore, Telize has very minimal overhead and should be blazing fast.

Requirements

Telize requires the following Go libraries:

• chi: lightweight, idiomatic and composable router - https://github.com/go-chi/chi
• maxminddb-golang: MaxMind DB Reader for Go - https://github.com/oschwald/maxminddb-golang

GeoIP2 databases

Telize requires the free [GeoLite2 databases][1] from MaxMind.

Telize will look for the GeoLite2 City and GeoLite2 ASN databases in /var/db/GeoIP by default.

Installation

Build and install with the go tool, all dependencies will be automatically fetched and compiled:

go build go install telize

Usage

By default, Telize will bind on localhost, port 8080.

USAGE: -host string Set the server host (default "127.0.0.1") -port string Set the server port (default "8080") -version Display version

Running Telize at boot time

Systemd unit file

Telize is bundled with a systemd unit file, see: systemd/telize.service

Copy the systemd/telize.service file in /etc/systemd/system and the Telize binary in /usr/local/sbin.

To launch the daemon at startup, run:

systemctl enable telize

Making Queries

For complete API documentation and usage examples, please check the project site.

Telize supports JSONP callbacks.

Get IP address in Plain text format

• Example: http://127.0.0.1:8080/ip

Get IP address in JSON format

• Example (JSON): http://127.0.0.1:8080/jsonip
• Example (JSONP): http://127.0.0.1:8080/jsonip?callback=getip

Get IP address location in JSON format

Calling the API endpoint without any parameter will return the visitor IP address:

• Example (JSON): http://127.0.0.1:8080/location
• Example (JSONP): http://127.0.0.1:8080/location?callback=getlocation

• Example (JSON): http://127.0.0.1:8080/location/46.19.37.108
• Example (JSONP): http://127.0.0.1:8080/location/46.19.37.108?callback=getlocation

Client Errors

When incorrect user input is entered, the server returns an HTTP 400 Error (Bad Request), along with a JSON-encoded error message.

• Code 401: Input string is not a valid IP address

Telize and proxies

Telize handles the 'X-Forwarded-For' HTTP header if present, and returns data for the first IP address of the list.

CORS Support (Cross-origin resource sharing)

Telize has CORS enabled by default with the following policy:

Access-Control-Allow-Origin: *

Timezone offsets

Since version 3.0.0, Telize now dynamically calculates timezone offsets (UTC time offset) and adds data to the payload.

License

Telize is released under the BSD 2-Clause license. See LICENSE file for details.

Author

Telize is developed by Frederic Cambus.

• Site: https://www.cambus.net

Resources

Project homepage: https://www.telize.com

Latest tarball release: https://www.statdns.com/telize/telize-3.1.1.tar.gz

GitHub: https://github.com/fcambus/telize

[1]: https://dev.maxmind.com/geoip/geoip2/geolite2/