feat: add transfer start UI message

internal/sender/sender.go

@@ -108,18 +108,20 @@ func SecureConnection(rc conn.Rendezvous, password string) (conn.Transfer, error
 	return conn.TransferFromSession(rc.Conn, session, salt), nil
 }
 
-// Transfer preforms the file transfer, either directly or using the Rendezvous server as a relay.
+// Transfer performs the file transfer, either directly or using the Rendezvous server as a relay.
 func Transfer(tc conn.Transfer, payload io.Reader, payloadSize int64, msgs ...chan interface{}) error {
 	return doTransfer(tc, payload, payloadSize, msgs...)
 }
 
-// transferSequence is a helper method that actually preforms the transfer sequence.
+// transferSequence is a helper method that actually performs the transfer sequence.
 func transferSequence(tc conn.Transfer, payload io.Reader, payloadSize int64, msgs ...chan interface{}) error {
 	_, err := tc.ReadMsg(transfer.ReceiverRequestPayload)
 	if err != nil {
 		return err
 	}
 
+	msgs[0] <- transfer.ReceiverRequestPayload
+
 	if err := transferPayload(tc, payload, payloadSize, msgs...); err != nil {
 		return err
 	}

internal/sender/transfer.go

@@ -12,7 +12,7 @@ import (
 	"github.com/SpatiumPortae/portal/protocol/transfer"
 )
 
-// doTransfer preforms the file transfer, either directly or using the Rendezvous server as a relay.
+// doTransfer performs the file transfer, either directly or using the Rendezvous server as a relay.
 // This version is built for other platforms other than js (wasm)
 func doTransfer(tc conn.Transfer, payload io.Reader, payloadSize int64, msgs ...chan interface{}) error {
 	_, err := tc.ReadMsg(transfer.ReceiverHandshake)
@@ -88,6 +88,7 @@ func doTransfer(tc conn.Transfer, payload io.Reader, payloadSize int64, msgs ...
 			Got: msg.Type}
 	}
 }
+
 func getLocalIP() (net.IP, error) {
 	addrs, err := net.InterfaceAddrs()
 	if err != nil {