41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
package ssdp
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import (
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"fmt"
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"net"
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)
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// LocationProvider provides address for Location header which can be reached from
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// "from" address network.
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type LocationProvider interface {
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// Location provides an address be reachable from the network located
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// by "from" address or "ifi" interface.
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// One of "from" or "ifi" must not be nil.
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Location(from net.Addr, ifi *net.Interface) string
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}
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// LocationProviderFunc type is an adapter to allow the use of ordinary
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// functions are location providers.
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type LocationProviderFunc func(net.Addr, *net.Interface) string
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func (f LocationProviderFunc) Location(from net.Addr, ifi *net.Interface) string {
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return f(from, ifi)
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}
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type fixedLocation string
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func (s fixedLocation) Location(net.Addr, *net.Interface) string {
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return string(s)
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}
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func toLocationProvider(v interface{}) (LocationProvider, error) {
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switch w := v.(type) {
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case string:
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return fixedLocation(w), nil
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case LocationProvider:
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return w, nil
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default:
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return nil, fmt.Errorf("location should be a string or a ssdp.LocationProvider but got %T", w)
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}
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}
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