Context.ContentLength() — request content-length accessor

[FumingPower3925]

Problem

Body limit middleware must manually parse c.Header("content-length") with strconv.ParseInt to check declared body size. A typed accessor avoids boilerplate and returns -1 for missing/invalid values (standard convention).

Unblocks

• Body Limit middleware (epoll reactor engine #9) — cleaner pre-read size check

Change

// context_request.go
func (c *Context) ContentLength() int64 {
    cl := c.Header("content-length")
    if cl == "" {
        return -1
    }
    n, err := strconv.ParseInt(cl, 10, 64)
    if err != nil || n < 0 {
        return -1
    }
    return n
}

Performance

Zero cost when not called. Parses header on demand (no caching needed — called at most once per request by body-limit middleware).

Files

• context_request.go