Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
- API
  
  Reference documentation for the pkg.go.dev API
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

challenge

package

Go to main page

Versions in this module

v1

v1.27.0

Aug 10, 2026

v1.26.2

Aug 1, 2026

Changes in this version

+ var ErrInvalidInput = errors.New("challenge: input is nil or missing required fields")

type IssueInput

+ func (in *IssueInput) Valid() error

type ValidateInput

+ func (in *ValidateInput) Valid() error

v1.25.1

May 22, 2026

Changes in this version

+ var ErrFailed = errors.New("challenge: user failed challenge")

+ var ErrInvalidFormat = errors.New("challenge: field has invalid format")

+ var ErrMissingField = errors.New("challenge: missing field")

+ var TimeTaken = promauto.NewHistogramVec(prometheus.HistogramOpts{ ... }, []string{ ... })

+ func Methods() []string

+ func Register(name string, impl Impl)

+ type Challenge struct

+ Difficulty int

+ ID string

+ IssuedAt time.Time

+ Metadata map[string]string

+ Method string

+ PolicyRuleHash string

+ RandomData string

+ Spent bool

+ type Error struct

+ PrivateReason error

+ PublicReason string

+ StatusCode int

+ Verb string

+ func NewError(verb, publicReason string, privateReason error) *Error

+ func (e *Error) Error() string

+ func (e *Error) Unwrap() error

+ type Impl interface

+ Issue func(w http.ResponseWriter, r *http.Request, lg *slog.Logger, in *IssueInput) (templ.Component, error)

+ Setup func(mux *http.ServeMux)

+ Validate func(r *http.Request, lg *slog.Logger, in *ValidateInput) error

+ func Get(name string) (Impl, bool)

+ type IssueInput struct

+ Challenge *Challenge

+ Impressum *config.Impressum

+ OGTags map[string]string

+ Rule *policy.Bot

+ Store store.Interface

+ type ValidateInput struct

+ Challenge *Challenge

+ Rule *policy.Bot

+ Store store.Interface