[#735] pkg/network: Delete tls multiaddr implementation

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/network/tls.go

@@ -1,53 +1,20 @@
 package network
 
 import (
-	"fmt"
-
 	"github.com/multiformats/go-multiaddr"
 )
 
-// There is implementation of TLS protocol for
-// github.com/multiformats/go-multiaddr library in this file.
-//
-// After addition TLS protocol via `multiaddr.AddProtocol` function
-// the library is ready to parse "tls" protocol with empty body, e.g.:
-//
-//		"/dns4/localhost/tcp/8080/tls"
-
 const (
 	tlsProtocolName = "tls"
-
-	// tlsProtocolCode is chosen according to its draft version's code in
-	// original multiaddr repository: https://github.com/multiformats/multicodec.
-	tlsProtocolCode = 0x01c0
 )
 
 // tls var is used for (un)wrapping other multiaddrs around TLS multiaddr.
-var tls multiaddr.Multiaddr
-
-func init() {
-	tlsProtocol := multiaddr.Protocol{
-		Name:  tlsProtocolName,
-		Code:  tlsProtocolCode,
-		Size:  0,
-		VCode: multiaddr.CodeToVarint(tlsProtocolCode),
-	}
-
-	err := multiaddr.AddProtocol(tlsProtocol)
-	if err != nil {
-		panic(fmt.Errorf("could not add 'TLS' protocol to multiadd library: %w", err))
-	}
-
-	tls, err = multiaddr.NewMultiaddr("/" + tlsProtocolName)
-	if err != nil {
-		panic(fmt.Errorf("could not init 'TLS' protocol with multiadd library: %w", err))
-	}
-}
+var tls, _ = multiaddr.NewMultiaddr("/" + tlsProtocolName)
 
 // TLSEnabled searches for wrapped TLS protocol in multiaddr.
 func (a Address) TLSEnabled() bool {
 	for _, protoc := range a.ma.Protocols() {
-		if protoc.Code == tlsProtocolCode {
+		if protoc.Code == multiaddr.P_TLS {
 			return true
 		}
 	}