103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package swarm
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/libp2p/go-libp2p-core/transport"
|
|
|
|
ma "github.com/multiformats/go-multiaddr"
|
|
)
|
|
|
|
// TransportForDialing retrieves the appropriate transport for dialing the given
|
|
// multiaddr.
|
|
func (s *Swarm) TransportForDialing(a ma.Multiaddr) transport.Transport {
|
|
protocols := a.Protocols()
|
|
if len(protocols) == 0 {
|
|
return nil
|
|
}
|
|
|
|
s.transports.RLock()
|
|
defer s.transports.RUnlock()
|
|
if len(s.transports.m) == 0 {
|
|
log.Error("you have no transports configured")
|
|
return nil
|
|
}
|
|
|
|
for _, p := range protocols {
|
|
transport, ok := s.transports.m[p.Code]
|
|
if !ok {
|
|
continue
|
|
}
|
|
if transport.Proxy() {
|
|
return transport
|
|
}
|
|
}
|
|
|
|
return s.transports.m[protocols[len(protocols)-1].Code]
|
|
}
|
|
|
|
// TransportForListening retrieves the appropriate transport for listening on
|
|
// the given multiaddr.
|
|
func (s *Swarm) TransportForListening(a ma.Multiaddr) transport.Transport {
|
|
protocols := a.Protocols()
|
|
if len(protocols) == 0 {
|
|
return nil
|
|
}
|
|
|
|
s.transports.RLock()
|
|
defer s.transports.RUnlock()
|
|
if len(s.transports.m) == 0 {
|
|
log.Error("you have no transports configured")
|
|
return nil
|
|
}
|
|
|
|
selected := s.transports.m[protocols[len(protocols)-1].Code]
|
|
for _, p := range protocols {
|
|
transport, ok := s.transports.m[p.Code]
|
|
if !ok {
|
|
continue
|
|
}
|
|
if transport.Proxy() {
|
|
selected = transport
|
|
}
|
|
}
|
|
return selected
|
|
}
|
|
|
|
// AddTransport adds a transport to this swarm.
|
|
//
|
|
// Satisfies the Network interface from go-libp2p-transport.
|
|
func (s *Swarm) AddTransport(t transport.Transport) error {
|
|
protocols := t.Protocols()
|
|
|
|
if len(protocols) == 0 {
|
|
return fmt.Errorf("useless transport handles no protocols: %T", t)
|
|
}
|
|
|
|
s.transports.Lock()
|
|
defer s.transports.Unlock()
|
|
var registered []string
|
|
for _, p := range protocols {
|
|
if _, ok := s.transports.m[p]; ok {
|
|
proto := ma.ProtocolWithCode(p)
|
|
name := proto.Name
|
|
if name == "" {
|
|
name = fmt.Sprintf("unknown (%d)", p)
|
|
}
|
|
registered = append(registered, name)
|
|
}
|
|
}
|
|
if len(registered) > 0 {
|
|
return fmt.Errorf(
|
|
"transports already registered for protocol(s): %s",
|
|
strings.Join(registered, ", "),
|
|
)
|
|
}
|
|
|
|
for _, p := range protocols {
|
|
s.transports.m[p] = t
|
|
}
|
|
return nil
|
|
}
|