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http: MaxBytesReader doc cleanups
Comments from rsc after 4921049 was submitted. R=rsc CC=golang-dev https://golang.org/cl/5034042
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@ -610,14 +610,14 @@ func ReadRequest(b *bufio.Reader) (req *Request, err os.Error) {
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return req, nil
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}
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// MaxBytesReader is similar to io.LimitReader, but is intended for
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// MaxBytesReader is similar to io.LimitReader but is intended for
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// limiting the size of incoming request bodies. In contrast to
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// io.LimitReader, MaxBytesReader is a ReadCloser, returns a non-EOF
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// error if the body is too large, and also takes care of closing the
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// underlying io.ReadCloser connection (if applicable, usually a TCP
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// connection) when the limit is hit. This prevents clients from
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// accidentally or maliciously sending a large request and wasting
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// server resources.
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// io.LimitReader, MaxBytesReader's result is a ReadCloser, returns a
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// non-EOF error for a Read beyond the limit, and Closes the
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// underlying reader when its Close method is called.
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//
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// MaxBytesReader prevents clients from accidentally or maliciously
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// sending a large request and wasting server resources.
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func MaxBytesReader(w ResponseWriter, r io.ReadCloser, n int64) io.ReadCloser {
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return &maxBytesReader{w: w, r: r, n: n}
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}
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@ -675,7 +675,7 @@ func (r *Request) ParseForm() (err os.Error) {
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switch {
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case ct == "text/plain" || ct == "application/x-www-form-urlencoded" || ct == "":
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var reader io.Reader = r.Body
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maxFormSize := int64((1 << 63) - 1)
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maxFormSize := int64(1<<63 - 1)
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if _, ok := r.Body.(*maxBytesReader); !ok {
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maxFormSize = int64(10 << 20) // 10 MB is a lot of text.
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reader = io.LimitReader(r.Body, maxFormSize+1)
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