const net/http.StatusSwitchingProtocols

5 uses

	net/http (current package)
		response.go#L364: 	return code == StatusSwitchingProtocols && isProtocolSwitchHeader(h)
		status.go#L11: 	StatusSwitchingProtocols = 101 // RFC 7231, 6.2.2
		status.go#L81: 	StatusSwitchingProtocols: "Switching Protocols",
		transport.go#L2295: 		is1xxNonTerminal := is1xx && resCode != StatusSwitchingProtocols

	net/http/httputil
		reverseproxy.go#L295: 	if res.StatusCode == http.StatusSwitchingProtocols {

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