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passthrough.go
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passthrough.go
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/*
*Copyright (c) 2022, kaydxh
*
*Permission is hereby granted, free of charge, to any person obtaining a copy
*of this software and associated documentation files (the "Software"), to deal
*in the Software without restriction, including without limitation the rights
*to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
*copies of the Software, and to permit persons to whom the Software is
*furnished to do so, subject to the following conditions:
*
*The above copyright notice and this permission notice shall be included in all
*copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
*IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
*AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
*LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
*OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*SOFTWARE.
*/
package passthrough
import (
"github.com/kaydxh/golang/go/net/resolver"
)
const scheme = "passthrough"
type passthroughBuilder struct{}
func (*passthroughBuilder) Build(target resolver.Target, opts ...resolver.ResolverBuildOption) (resolver.Resolver, error) {
var opt resolver.ResolverBuildOptions
opt.ApplyOptions(opts...)
r := &passthroughResolver{
target: target,
}
return r, nil
}
func (*passthroughBuilder) Scheme() string {
return scheme
}
type passthroughResolver struct {
target resolver.Target
}
func (r *passthroughResolver) ResolveOne(opts ...resolver.ResolveOneOption) (resolver.Address, error) {
return resolver.Address{Addr: r.target.Endpoint}, nil
}
func (r *passthroughResolver) ResolveAll(opts ...resolver.ResolveAllOption) ([]resolver.Address, error) {
return []resolver.Address{{Addr: r.target.Endpoint}}, nil
}
func (r *passthroughResolver) ResolveNow(opts ...resolver.ResolveNowOption) {}
func (*passthroughResolver) Close() {}
func init() {
resolver.Register(&passthroughBuilder{})
}