server.go + peer: use MessageConn interface instead of brontide.Conn

peer/interfaces.go

@@ -1,6 +1,11 @@
 package peer
 
-import "github.com/lightningnetwork/lnd/lnwire"
+import (
+	"net"
+	"time"
+
+	"github.com/lightningnetwork/lnd/lnwire"
+)
 
 // LinkUpdater is an interface implemented by most messages in BOLT 2 that are
 // allowed to update the channel state.
@@ -9,3 +14,43 @@ type LinkUpdater interface {
 	// is intended.
 	TargetChanID() lnwire.ChannelID
 }
+
+// MessageConn is an interface implemented by anything that delivers
+// an lnwire.Message using a net.Conn interface.
+type MessageConn interface {
+	// RemoteAddr returns the remote address on the other end of the connection.
+	RemoteAddr() net.Addr
+
+	// LocalAddr returns the local address on our end of the connection.
+	LocalAddr() net.Addr
+
+	// Read reads bytes from the connection.
+	Read([]byte) (int, error)
+
+	// Write writes bytes to the connection.
+	Write([]byte) (int, error)
+
+	// SetDeadline sets the deadline for the connection.
+	SetDeadline(time.Time) error
+
+	// SetReadDeadline sets the read deadline.
+	SetReadDeadline(time.Time) error
+
+	// SetWriteDeadline sets the write deadline.
+	SetWriteDeadline(time.Time) error
+
+	// Close closes the connection.
+	Close() error
+
+	// Flush attempts a flush.
+	Flush() (int, error)
+
+	// WriteMessage writes the message.
+	WriteMessage([]byte) error
+
+	// ReadNextHeader reads the next header.
+	ReadNextHeader() (uint32, error)
+
+	// ReadNextBody reads the next body.
+	ReadNextBody([]byte) ([]byte, error)
+}