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Zinc

Middleware

Body Limit

Reject oversized request bodies before handlers consume them.

BodyLimit rejects request bodies over a size you choose with 413 Request Entity Too Large, before handlers read them. Use it to set a tighter limit on particular routes than the app-wide Config.BodyLimit, which binding already enforces.

Quick start

Section titled “Quick start”
app.Use(middleware.BodyLimit(10 * middleware.MB))

Config

Section titled “Config”
app.Use(middleware.BodyLimitWithConfig(middleware.BodyLimitConfig{
  Limit: 10 * middleware.MB,
}))

Fields

Section titled “Fields”
Field Meaning
Skipper Skip the limit for selected requests
Limit Required maximum size in bytes

Size helpers

Section titled “Size helpers”

Zinc exposes convenient constants:

  • middleware.B
  • middleware.KB
  • middleware.MB
  • middleware.GB

Failure behavior

Section titled “Failure behavior”

When the body exceeds the configured limit, Zinc returns a *middleware.BodyLimitError.

That error includes:

  • Limit
  • Observed
  • Source

Source tells you whether the limit was exceeded from:

  • the request’s Content-Length
  • actual body reads

The error unwraps to zinc.ErrRequestEntityTooLarge.