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net/http: fix whitespace handling in sniffer.
A single character typo ("\n" instead of "\r") meant that HTML data using DOS line breaks (CRLF) was not detected as HTML. R=golang-dev, adg CC=golang-dev https://golang.org/cl/5365041
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@ -38,7 +38,7 @@ func DetectContentType(data []byte) string {
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}
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func isWS(b byte) bool {
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return bytes.IndexByte([]byte("\t\n\x0C\n "), b) != -1
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return bytes.IndexByte([]byte("\t\n\x0C\r "), b) != -1
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}
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type sniffSig interface {
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@ -26,6 +26,7 @@ var sniffTests = []struct {
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{"HTML document #1", []byte(`<HtMl><bOdY>blah blah blah</body></html>`), "text/html; charset=utf-8"},
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{"HTML document #2", []byte(`<HTML></HTML>`), "text/html; charset=utf-8"},
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{"HTML document #3 (leading whitespace)", []byte(` <!DOCTYPE HTML>...`), "text/html; charset=utf-8"},
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{"HTML document #4 (leading CRLF)", []byte("\r\n<html>..."), "text/html; charset=utf-8"},
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{"Plain text", []byte(`This is not HTML. It has ☃ though.`), "text/plain; charset=utf-8"},
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