const net/http.TrailerPrefix

4 uses

	net/http (current package)
		server.go#L522: const TrailerPrefix = "Trailer:"
		server.go#L529: 		if kk, found := strings.CutPrefix(k, TrailerPrefix); found {
		server.go#L1341: 		if strings.HasPrefix(k, TrailerPrefix) {

	net/http/httputil
		reverseproxy.go#L547: 		k = http.TrailerPrefix + k

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