add a helper function to go directly from a string to an AddrInfo (#184)

* add a helper function to go directly from a string to an AddrInfo

* Update peer/addrinfo.go

Co-authored-by: Will <will.scott@protocol.ai>

Co-authored-by: Will <will.scott@protocol.ai>

peer/addrinfo.go

@@ -3,6 +3,7 @@ package peer
 import (
 	"fmt"
 
+	"github.com/multiformats/go-multiaddr"
 	ma "github.com/multiformats/go-multiaddr"
 )
 
@@ -61,6 +62,16 @@ func SplitAddr(m ma.Multiaddr) (transport ma.Multiaddr, id ID) {
 	return transport, id
 }
 
+// AddrInfoFromString builds an AddrInfo from the string representation of a Multiaddr
+func AddrInfoFromString(s string) (*AddrInfo, error) {
+	a, err := multiaddr.NewMultiaddr(s)
+	if err != nil {
+		return nil, err
+	}
+
+	return AddrInfoFromP2pAddr(a)
+}
+
 // AddrInfoFromP2pAddr converts a Multiaddr to an AddrInfo.
 func AddrInfoFromP2pAddr(m ma.Multiaddr) (*AddrInfo, error) {
 	transport, id := SplitAddr(m)