go/src/net/http/sniff.go

const sniffLen …

// DetectContentType implements the algorithm described
// at https://mimesniff.spec.whatwg.org/ to determine the
// Content-Type of the given data. It considers at most the
// first 512 bytes of data. DetectContentType always returns
// a valid MIME type: if it cannot determine a more specific one, it
// returns "application/octet-stream".
func DetectContentType(data []byte) string { … }

// isWS reports whether the provided byte is a whitespace byte (0xWS)
// as defined in https://mimesniff.spec.whatwg.org/#terminology.
func isWS(b byte) bool { … }

// isTT reports whether the provided byte is a tag-terminating byte (0xTT)
// as defined in https://mimesniff.spec.whatwg.org/#terminology.
func isTT(b byte) bool { … }

type sniffSig …

var sniffSignatures …

type exactSig …

func (e *exactSig) match(data []byte, firstNonWS int) string { … }

type maskedSig …

func (m *maskedSig) match(data []byte, firstNonWS int) string { … }

type htmlSig …

func (h htmlSig) match(data []byte, firstNonWS int) string { … }

var mp4ftype …

var mp4 …

type mp4Sig …

func (mp4Sig) match(data []byte, firstNonWS int) string { … }

type textSig …

func (textSig) match(data []byte, firstNonWS int) string { … }