fix receiver

pkg/session/receiver/init.go

@@ -2,6 +2,7 @@ package receiver
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/pion/webrtc/v2"
 	log "github.com/sirupsen/logrus"
@@ -51,15 +52,21 @@ func (s *Session) CreateDataHandler() {
 	})
 }
 
-func (s *Session) ReceiveData() {
-	s.receiveData()
+func (s *Session) ReceiveData(pathToFile string) {
+	s.receiveData(pathToFile)
 	s.sess.OnCompletion()
 }
 
-func (s *Session) receiveData() {
+func (s *Session) receiveData(pathToFile string) error {
 	log.Infoln("Starting to receive data...")
-	defer log.Infoln("Stopped receiving data...")
-
+	f, err := os.OpenFile(pathToFile, os.O_RDWR|os.O_CREATE, 0755)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		log.Infoln("Stopped receiving data...")
+		f.Close()
+	}()
 	// Consume the message channel, until done
 	// Does not stop on error
 	for {
@@ -67,12 +74,12 @@ func (s *Session) receiveData() {
 		case <-s.sess.Done:
 			s.sess.NetworkStats.Stop()
 			fmt.Printf("\nNetwork: %s\n", s.sess.NetworkStats.String())
-			return
+			return nil
 		case msg := <-s.msgChannel:
-			n, err := s.stream.Write(msg.Data)
+			n, err := f.Write(msg.Data)
 
 			if err != nil {
-				log.Errorln(err)
+				return err
 			} else {
 				currentSpeed := s.sess.NetworkStats.Bandwidth()
 				fmt.Printf("Transferring at %.2f MB/s\r", currentSpeed)
@@ -80,6 +87,7 @@ func (s *Session) receiveData() {
 			}
 		}
 	}
+	return nil
 }
 
 func (s *Session) CreateConnection() (err error) {

pkg/session/receiver/receiver.go

@@ -3,31 +3,29 @@ package receiver
 import (
 	"io"
 
+	"github.com/pion/webrtc/v2"
 	internalSess "github.com/schollz/croc/v5/internal/session"
 	"github.com/schollz/croc/v5/pkg/session/common"
-	"github.com/pion/webrtc/v2"
 )
 
 // Session is a receiver session
 type Session struct {
 	sess        internalSess.Session
-	stream      io.Writer
 	msgChannel  chan webrtc.DataChannelMessage
 	initialized bool
 }
 
-func new(s internalSess.Session, f io.Writer) *Session {
+func new(s internalSess.Session) *Session {
 	return &Session{
 		sess:        s,
-		stream:      f,
 		msgChannel:  make(chan webrtc.DataChannelMessage, 4096*2),
 		initialized: false,
 	}
 }
 
 // New creates a new receiver session
-func New(f io.Writer) *Session {
-	return new(internalSess.New(nil, nil), f)
+func New() *Session {
+	return new(internalSess.New(nil, nil))
 }
 
 // Config contains custom configuration for a session
@@ -38,10 +36,5 @@ type Config struct {
 
 // NewWith createa a new receiver Session with custom configuration
 func NewWith(c Config) *Session {
-	return new(internalSess.New(c.SDPProvider, c.SDPOutput), c.Stream)
-}
-
-// SetStream changes the stream, useful for WASM integration
-func (s *Session) SetStream(stream io.Writer) {
-	s.stream = stream
+	return new(internalSess.New(c.SDPProvider, c.SDPOutput))
 }

src/croc/croc.go

@@ -390,7 +390,8 @@ func (c *Client) processMessage(m Message) (err error) {
 			Num:     m.Num,
 		}.String()).Err()
 		// start receiving data
-		c.recvSess.ReceiveData()
+		pathToFile := path.Join(c.FilesToTransfer[c.FilesToTransferCurrentNum].FolderRemote, c.FilesToTransfer[c.FilesToTransferCurrentNum].Name)
+		c.recvSess.ReceiveData(pathToFile)
 
 	case "datachannel-answer":
 		c.log.Debug("got answer:", m.Message)
@@ -533,9 +534,7 @@ func (c *Client) dataChannelReceive() (err error) {
 		return err
 	}
 
-	c.recvSess = recvSess.NewWith(recvSess.Config{
-		Stream: c.CurrentFile,
-	})
+	c.recvSess = recvSess.NewWith(recvSess.Config{})
 
 	err = c.recvSess.CreateConnection()
 	if err != nil {