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157 lines
6.5 KiB
Markdown
157 lines
6.5 KiB
Markdown
# What is my IP address
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[](https://github.com/dcarrillo/whatismyip/actions)
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[](https://github.com/dcarrillo/whatismyip/actions/workflows/codeql-analysis.yml)
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[](https://goreportcard.com/report/github.com/dcarrillo/whatismyip)
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[](https://github.com/dcarrillo/whatismyip/releases/)
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[](./LICENSE)
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- [What is my IP address](#what-is-my-ip-address)
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- [Features](#features)
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- [Endpoints](#endpoints)
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- [Build](#build)
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- [Usage](#usage)
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- [Examples](#examples)
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- [Run a default TCP server](#run-a-default-tcp-server)
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- [Run a TLS (HTTP/2) server only](#run-a-tls-http2-server-only)
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- [Run an HTTP/3 server](#run-an-http3-server)
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- [Run a default TCP server with a custom template and trust a pair of custom headers set by an upstream proxy](#run-a-default-tcp-server-with-a-custom-template-and-trust-a-pair-of-custom-headers-set-by-an-upstream-proxy)
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- [Download](#download)
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- [Docker](#docker)
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- [Run a container locally using test databases](#run-a-container-locally-using-test-databases)
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- [From Docker Hub](#from-docker-hub)
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Just another "what is my IP address" service, including geolocation and headers information, written in go with high performance in mind, it uses [gin](https://github.com/gin-gonic/gin) which uses [httprouter](https://github.com/julienschmidt/httprouter) a lightweight high performance HTTP multiplexer.
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Take a look at [ifconfig.es](https://ifconfig.es) a live site using `whatismyip`
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Get your public IP easily from the command line:
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```bash
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curl ifconfig.es
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127.0.0.1
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curl -6 ifconfig.es
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::1
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```
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## Features
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- TLS and HTTP/2.
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- Experimental HTTP/3 support. HTTP/3 requires a TLS server running (`-tls-bind`), as HTTP/3 starts as a TLS connection that then gets upgraded to UDP. The UDP port is the same as the one used for the TLS server.
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- Can run behind a proxy by trusting a custom header (usually `X-Real-IP`) to figure out the source IP address. It also supports a custom header to resolve the client port, if the proxy can only add a header for the IP (for example a fixed header from CDNs) the client port is shown as unknown.
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- IPv4 and IPv6.
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- Geolocation info including ASN. This feature is possible thanks to [maxmind](https://dev.maxmind.com/geoip/geolite2-free-geolocation-data?lang=en) GeoLite2 databases. In order to use these databases, a license key is needed. Please visit Maxmind site for further instructions and get a free license.
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- High performance.
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- Self-contained server that can reload GeoLite2 databases and/or SSL certificates without stop/start. The `hup` signal is honored.
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- HTML templates for the landing page.
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- Text plain and JSON output.
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## Endpoints
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- https://ifconfig.es/
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- https://ifconfig.es/client-port
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- https://ifconfig.es/json (this is the same as `curl -H "Accept: application/json" https://ifconfig.es/`)
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- https://ifconfig.es/geo
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- https://ifconfig.es/geo/city
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- https://ifconfig.es/geo/country
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- https://ifconfig.es/geo/country_code
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- https://ifconfig.es/geo/latitude
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- https://ifconfig.es/geo/longitude
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- https://ifconfig.es/geo/postal_code
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- https://ifconfig.es/geo/time_zone
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- https://ifconfig.es/asn
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- https://ifconfig.es/asn/number
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- https://ifconfig.es/asn/organization
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- https://ifconfig.es/all
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- https://ifconfig.es/headers
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- https://ifconfig.es/<header_name>
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## Build
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Golang >= 1.19 is required.
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`make build`
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## Usage
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```text
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Usage of whatismyip:
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-bind string
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Listening address (see https://pkg.go.dev/net?#Listen) (default ":8080")
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-enable-http3
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Enable HTTP/3 protocol. HTTP/3 requires --tls-bind set, as HTTP/3 starts as a TLS connection that then gets upgraded to UDP. The UDP port is the same as the one used for the TLS server.
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-enable-secure-headers
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Add sane security-related headers to every response
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-geoip2-asn string
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Path to GeoIP2 ASN database
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-geoip2-city string
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Path to GeoIP2 city database
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-template string
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Path to template file
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-tls-bind string
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Listening address for TLS (see https://pkg.go.dev/net?#Listen)
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-tls-crt string
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When using TLS, path to certificate file
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-tls-key string
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When using TLS, path to private key file
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-trusted-header string
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Trusted request header for remote IP (e.g. X-Real-IP). When using this feature if -trusted-port-header is not set the client port is shown as 'unknown'
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-trusted-port-header string
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Trusted request header for remote client port (e.g. X-Real-Port). When this parameter is set -trusted-header becomes mandatory
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-version
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Output version information and exit
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```
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## Examples
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### Run a default TCP server
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```bash
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./whatismyip -geoip2-city ./test/GeoIP2-City-Test.mmdb -geoip2-asn ./test/GeoLite2-ASN-Test.mmdb
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```
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### Run a TLS (HTTP/2) server only
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```bash
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./whatismyip -geoip2-city ./test/GeoIP2-City-Test.mmdb -geoip2-asn ./test/GeoLite2-ASN-Test.mmdb \
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-bind "" -tls-bind :8081 -tls-crt ./test/server.pem -tls-key ./test/server.key
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```
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### Run an HTTP/3 server
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```bash
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./whatismyip -geoip2-city ./test/GeoIP2-City-Test.mmdb -geoip2-asn ./test/GeoLite2-ASN-Test.mmdb \
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-bind "" -tls-bind :8081 -tls-crt ./test/server.pem -tls-key ./test/server.key -enable-http3
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```
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### Run a default TCP server with a custom template and trust a pair of custom headers set by an upstream proxy
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```bash
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./whatismyip -geoip2-city ./test/GeoIP2-City-Test.mmdb -geoip2-asn ./test/GeoLite2-ASN-Test.mmdb \
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-trusted-header X-Real-IP -trusted-port-header X-Real-Port -template mytemplate.tmpl
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```
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## Download
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Download the latest version from https://github.com/dcarrillo/whatismyip/releases
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## Docker
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An ultra-light (~12MB) image is available at [docker hub](https://hub.docker.com/r/dcarrillo/whatismyip).
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### Run a container locally using test databases
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`make docker-run`
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### From Docker Hub
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```bash
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docker run --tty --interactive --rm \
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-v $PWD/<path to city database>:/tmp/GeoIP2-City-Test.mmdb:ro \
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-v $PWD/<path to ASN database>:/tmp/GeoLite2-ASN-Test.mmdb:ro -p 8080:8080 \
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dcarrillo/whatismyip:latest \
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-geoip2-city /tmp/GeoIP2-City-Test.mmdb \
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-geoip2-asn /tmp/GeoLite2-ASN-Test.mmdb
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```
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