68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package network
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import (
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"fmt"
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"github.com/multiformats/go-multiaddr"
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)
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// There is implementation of TLS protocol for
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// github.com/multiformats/go-multiaddr library in this file.
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//
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// After addition TLS protocol via `multiaddr.AddProtocol` function
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// the library is ready to parse "tls" protocol with empty body, e.g.:
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//
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// "/dns4/localhost/tcp/8080/tls"
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const (
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tlsProtocolName = "tls"
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// tlsProtocolCode is chosen according to its draft version's code in
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// original multiaddr repository: https://github.com/multiformats/multicodec.
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tlsProtocolCode = 0x01c0
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)
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// tls var is used for (un)wrapping other multiaddrs around TLS multiaddr.
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var tls multiaddr.Multiaddr
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func init() {
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tlsProtocol := multiaddr.Protocol{
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Name: tlsProtocolName,
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Code: tlsProtocolCode,
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Size: 0,
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VCode: multiaddr.CodeToVarint(tlsProtocolCode),
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}
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err := multiaddr.AddProtocol(tlsProtocol)
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if err != nil {
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panic(fmt.Errorf("could not add 'TLS' protocol to multiadd library: %w", err))
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}
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tls, err = multiaddr.NewMultiaddr("/" + tlsProtocolName)
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if err != nil {
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panic(fmt.Errorf("could not init 'TLS' protocol with multiadd library: %w", err))
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}
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}
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// TLSEnabled searches for wrapped TLS protocol in multiaddr.
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func (a Address) TLSEnabled() bool {
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for _, protoc := range a.ma.Protocols() {
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if protoc.Code == tlsProtocolCode {
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return true
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}
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}
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return false
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}
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// AddTLS encapsulates a Address if there is no TLS yet.
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func (a *Address) AddTLS() {
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// not need to add TLS if it is
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// already included
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if a.TLSEnabled() {
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return
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}
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a.ma = a.ma.Encapsulate(tls)
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}
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