add window recipient prompt

src/croc/croc.go

@@ -57,6 +57,10 @@ type Croc struct {
 	StateString string
 	Bar         *progressbar.ProgressBar
 	FileInfo    models.FileStats
+
+	// special for window
+	WindowRecipientPrompt bool
+	WindowRecipientAccept bool
 }
 
 // Init will initiate with the default parameters

src/croc/recipient.go

@@ -220,6 +220,22 @@ func (cr *Croc) receive(forceSend int, serverAddress string, tcpPorts []string,
 					return nil
 				}
 			}
+			if cr.WindowRecipientPrompt {
+				// wait until it switches to false
+				// the window should then set WindowRecipientAccept
+				for {
+					if !cr.WindowRecipientPrompt {
+						if cr.WindowRecipientAccept {
+							break
+						} else {
+							fmt.Fprintf(os.Stderr, "cancelling request")
+							c.WriteMessage(websocket.BinaryMessage, []byte("no"))
+							return nil
+						}
+					}
+					time.Sleep(10 * time.Millisecond)
+				}
+			}
 
 			// await file
 			// erase file if overwriting