Minor cleanup

Transfer UDT.go

@@ -25,7 +25,7 @@ var transferSequenceTimeout = time.Minute * 10
 // startFileTransferUDT starts a file transfer to a remote peer.
 // It creates a virtual UDT client to transfer data to a remote peer. Counterintuitively, this will be the "file server" peer.
 func (peer *PeerInfo) startFileTransferUDT(hash []byte, offset, limit uint64, sequenceNumber uint32) (err error) {
-	virtualConnection := newVirtualPacketConn(peer, 0, hash, offset, limit, false)
+	virtualConnection := newVirtualPacketConn(peer, 0, hash, offset, limit)
 
 	// register the sequence since packets are sent bi-directional
 	virtualConnection.sequenceNumber = sequenceNumber
@@ -47,7 +47,7 @@ func (peer *PeerInfo) startFileTransferUDT(hash []byte, offset, limit uint64, se
 
 // RequestFileTransferUDT creates a UDT server listening for incoming data transfer and requests a file transfer from a remote peer.
 func (peer *PeerInfo) RequestFileTransferUDT(hash []byte, offset, limit uint64) (udtConn net.Conn, err error) {
-	virtualConnection := newVirtualPacketConn(peer, 0, hash, offset, limit, true)
+	virtualConnection := newVirtualPacketConn(peer, 0, hash, offset, limit)
 
 	// new sequence
 	sequence := networks.Sequences.NewSequenceBi(peer.PublicKey, &peer.messageSequence, virtualConnection, transferSequenceTimeout, virtualConnection.sequenceTerminate)

Transfer Virtual Connection.go

@@ -19,9 +19,6 @@ import (
 type virtualPacketConn struct {
 	peer *PeerInfo
 
-	// isListenMode puts this connection into listening mode (counterintuitively, a server).
-	isListenMode bool
-
 	// Transfer settings
 	transferProtocol uint8  // 0 = UDT
 	hash             []byte // The requested hash.
@@ -43,14 +40,13 @@ type virtualPacketConn struct {
 }
 
 // newVirtualPacketConn creates a new virtual connection (both incomign and outgoing).
-func newVirtualPacketConn(peer *PeerInfo, protocol uint8, hash []byte, offset, limit uint64, isListen bool) (v *virtualPacketConn) {
+func newVirtualPacketConn(peer *PeerInfo, protocol uint8, hash []byte, offset, limit uint64) (v *virtualPacketConn) {
 	v = &virtualPacketConn{
-		transferProtocol: protocol,
 		peer:             peer,
+		transferProtocol: protocol,
 		hash:             hash,
 		offset:           offset,
 		limit:            limit,
-		isListenMode:     isListen,
 		incomingData:     make(chan []byte),
 		outgoingData:     make(chan []byte),
 		terminateChan:    make(chan struct{}),