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README.md

go-recaptcha

https://godoc.org/github.com/dpapathanasiou/go-recaptcha

About

This package handles reCaptcha (API versions 2 and 3) form submissions in Go.

Usage

Install the package in your environment:

go get github.com/dpapathanasiou/go-recaptcha

To use it within your own code, import github.com/dpapathanasiou/go-recaptcha and call:

recaptcha.Init (recaptchaPrivateKey)

once, to set the reCaptcha private key for your domain, then:

recaptcha.Confirm (clientIpAddress, recaptchaResponse)

reCAPTCHA v2

For each reCaptcha form input you need to check, using the values obtained by reading the form's POST parameters (the recaptchaResponse in the above corresponds to the value of g-recaptcha-response sent by the reCaptcha server.)

The recaptcha.Confirm() function returns either true (i.e., the captcha was completed correctly) or false, along with any errors (from the HTTP io read or the attempt to unmarshal the JSON reply).

reCAPTCHA v3

Version 3 works differently: instead of interrupting page visitors with a prompt, it runs in the background, computing a score.

This repo has been updated to handle the score and action in the response, but the usage example is still in terms of version 2.

Usage Example

Included with this repo is example.go, a simple HTTP server which creates the reCaptcha form and tests the input.

See the instructions for running the example for more details.

Donate

If you find this work useful, please consider making a donation:

Bitcoin Donate 14TM4ADKJbaGEi8Qr8dh4KfPBQmjTshkZ2

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About

A package for handling reCaptcha (http://www.google.com/recaptcha) form submissions in Go (http://golang.org/).

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