justcaptcha ver. 1.1.2
======================

A simple CAPTCHA service implementation.

## Usage

    justcaptchad -expiry 5m -listen /var/run/justcaptchad/j.sock

`-expiry` takes time for CAPTCHA to be valid for in format XX{s,m,h}.

`-listen` is `ip:port` or `/path/to/unix.sock` to listen on.

## API

### Get a new captcha

    GET /

It will return an ID of a new captcha in plaintext.

#### HTTP codes
- `200` if created

### Get an image for a captcha

    GET /:captcha_id/image?style=

Responds with an image (e.g. in PNG format).

An optional query parameter `style=` could be supplied if captcha implementation
support different styles.

#### HTTP codes
- `200` if exists
- `404` if doesn't exist
- `500` if for some reason Image wasn't created

### Submit an answer

    POST /:captcha_id

It takes one form-data parameter `answer=123456`.

Responds with empty body and one of HTTP codes.

#### HTTP codes
- `200` if solved
- `403` if not solved
- `404` if doesn't exist

### Check if captcha is solved

    GET /:captcha_id

Responds with empty body and one of HTTP codes.

#### HTTP codes
- `200` if solved
- `403` if not solved
- `404` if doesn't exist