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http: MaxBytesReader doc cleanups

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Comments from rsc after 4921049 was submitted.

R=rsc
CC=golang-dev
https://golang.org/cl/5034042
This commit is contained in:
Brad Fitzpatrick 2011-09-15 14:26:22 -07:00
parent 758b62bf6a
commit e30b9fd87e
1 changed files with 8 additions and 8 deletions
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16
src/pkg/http/request.go
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@ -610,14 +610,14 @@ func ReadRequest(b *bufio.Reader) (req *Request, err os.Error) {
return req, nil
}
// MaxBytesReader is similar to io.LimitReader, but is intended for
// MaxBytesReader is similar to io.LimitReader but is intended for
// limiting the size of incoming request bodies. In contrast to
// io.LimitReader, MaxBytesReader is a ReadCloser, returns a non-EOF
// error if the body is too large, and also takes care of closing the
// underlying io.ReadCloser connection (if applicable, usually a TCP
// connection) when the limit is hit. This prevents clients from
// accidentally or maliciously sending a large request and wasting
// server resources.
// io.LimitReader, MaxBytesReader's result is a ReadCloser, returns a
// non-EOF error for a Read beyond the limit, and Closes the
// underlying reader when its Close method is called.
//
// MaxBytesReader prevents clients from accidentally or maliciously
// sending a large request and wasting server resources.
func MaxBytesReader(w ResponseWriter, r io.ReadCloser, n int64) io.ReadCloser {
return &maxBytesReader{w: w, r: r, n: n}
}
@ -675,7 +675,7 @@ func (r *Request) ParseForm() (err os.Error) {
switch {
case ct == "text/plain" || ct == "application/x-www-form-urlencoded" || ct == "":
var reader io.Reader = r.Body
maxFormSize := int64((1 << 63) - 1)
maxFormSize := int64(1<<63 - 1)
if _, ok := r.Body.(*maxBytesReader); !ok {
maxFormSize = int64(10 << 20) // 10 MB is a lot of text.
reader = io.LimitReader(r.Body, maxFormSize+1)