r.Header.Add(strings.ReplaceAll(after, "_", "-"), v)
		}
	}

	uriStr := params["REQUEST_URI"]
	if uriStr == "" {
		// Fallback to SCRIPT_NAME, PATH_INFO and QUERY_STRING.
		uriStr = params["SCRIPT_NAME"] + params["PATH_INFO"]
		s := params["QUERY_STRING"]
		if s != "" {
			uriStr += "?" + s
		}
	}

	// There's apparently a de-facto standard for this.

}

type goarmFeatures struct {
	Version   int
	SoftFloat bool
}

func (g goarmFeatures) String() string {
	armStr := strconv.Itoa(g.Version)
	if g.SoftFloat {
		armStr += ",softfloat"
	} else {
		armStr += ",hardfloat"
	}
	return armStr
}

func goarm() (g goarmFeatures) {
	const (
		softFloatOpt = ",softfloat"
		hardFloatOpt = ",hardfloat"
	)
	def := defaultGOARM

	"fonipa":   0x6a,
	"fonkirsh": 0x6b,
	"fonnapa":  0x6c,
	"fonupa":   0x6d,
	"fonxsamp": 0x6e,
	"gallo":    0x21,
	"gascon":   0x22,
	"grclass":  0x23,
	"grital":   0x24,
	"grmistr":  0x25,
	"hepburn":  0x26,
	"heploc":   0x68,
	"hognorsk": 0x27,
	"hsistemo": 0x28,
	"ijekavsk": 0x29,
	"itihasa":  0x2a,
	"ivanchov": 0x2b,
	"jauer":    0x2c,
	"jyutping": 0x2d,

			}
			dnsNames = append(dnsNames, string(name))
		case nameTypeURI:
			uriStr := string(data)
			if err := isIA5String(uriStr); err != nil {
				return errors.New("x509: SAN uniformResourceIdentifier is malformed")
			}
			uri, err := url.Parse(uriStr)
			if err != nil {
				return fmt.Errorf("x509: cannot parse URI %q: %s", uriStr, err)
			}
			if len(uri.Host) > 0 {

		rawValues = append(rawValues, asn1.RawValue{Tag: nameTypeIP, Class: 2, Bytes: ip})
	}
	for _, uri := range uris {
		uriStr := uri.String()
		if err := isIA5String(uriStr); err != nil {
			return nil, err
		}
		rawValues = append(rawValues, asn1.RawValue{Tag: nameTypeURI, Class: 2, Bytes: []byte(uriStr)})
	}
	return asn1.Marshal(rawValues)
}

func isIA5String(s string) error {
	for _, r := range s {