Verbose output

Makefile

@@ -40,7 +40,7 @@ install: all
 	cp $(EXE_NAME) $(INSTALLATION_DIR)
 
 test:
-	cd $(SRC_DIR) && go test ./... ; cd ..
+	cd $(SRC_DIR) && go test ./...
 
 clean:
 	rm $(EXE_NAME)

src/main.go

@@ -30,7 +30,7 @@ import (
 )
 
 var (
-	VERSION string = "v2.1.1"
+	VERSION string = "v2.1.2"
 
 	versionInformation string = fmt.Sprintf("ftu %s\n\nCopyright (C) 2021  Kasyanov Nikolay Alexeevich (Unbewohnte (https://unbewohnte.xyz/))\nThis program comes with ABSOLUTELY NO WARRANTY.\nThis is free software, and you are welcome to redistribute it under certain conditions; type \"ftu -l\" for details.\n", VERSION)
 
@@ -43,6 +43,7 @@ var (
 	ADDRESS       *string = flag.String("a", "", "Specifies an address to connect to")
 	DOWNLOADS_DIR *string = flag.String("d", ".", "Downloads folder")
 	SEND          *string = flag.String("s", "", "Specify a file|directory to send")
+	VERBOSE       *bool   = flag.Bool("vp", false, "Turn on/off verbose output")
 	PRINT_VERSION *bool   = flag.Bool("v", false, "Print version information")
 	PRINT_LICENSE *bool   = flag.Bool("l", false, "Print license information")
 
@@ -59,6 +60,7 @@ func init() {
 		fmt.Printf("| -a [ip_address|domain_name] address to connect to (cannot be used with -s)\n")
 		fmt.Printf("| -d [path_to_directory] where the files will be downloaded to (cannot be used with -s)\n")
 		fmt.Printf("| -s [path_to_file|directory] to send it (cannot be used with -a)\n")
+		fmt.Printf("| -vp [true|false] to turn off|on verbose output")
 		fmt.Printf("| -l print license information\n")
 		fmt.Printf("| -v print version information\n\n\n")
 
@@ -81,7 +83,6 @@ func init() {
 
 		fmt.Printf("| ftu -r -s /home/user/homework/\n")
 		fmt.Printf("| creates a node that will send every file in the directory !RECUSRIVELY!\n\n\n")
-
 	}
 	flag.Parse()
 
@@ -118,6 +119,7 @@ func init() {
 
 func main() {
 	nodeOptions := node.NodeOptions{
+		VerboseOutput: *VERBOSE,
 		IsSending:     isSending,
 		WorkingPort:   *PORT,
 		ServerSide: &node.ServerSideNodeOptions{

src/node/node.go

@@ -77,6 +77,7 @@ type transferInfo struct {
 
 // Sender and receiver in one type !
 type Node struct {
+	verboseOutput bool
 	mutex         *sync.Mutex
 	packetPipe    chan *protocol.Packet // a way to receive incoming packets from another goroutine
 	isSending     bool                  // sending or a receiving node
@@ -118,6 +119,7 @@ func NewNode(options *NodeOptions) (*Node, error) {
 	}
 
 	node := Node{
+		verboseOutput: options.VerboseOutput,
 		mutex:         &sync.Mutex{},
 		packetPipe:    make(chan *protocol.Packet, 100),
 		isSending:     options.IsSending,
@@ -302,6 +304,7 @@ func (node *Node) Start() {
 		// mainloop
 		for {
 			if node.state.Stopped {
+				fmt.Printf("\n")
 				node.disconnect()
 				break
 			}
@@ -309,7 +312,7 @@ func (node *Node) Start() {
 			// receive incoming packets and decrypt them if necessary
 			incomingPacket, ok := <-node.packetPipe
 			if !ok {
-				fmt.Printf("\nThe connection has been closed unexpectedly")
+				fmt.Printf("\nThe connection has been closed unexpectedly\n")
 				os.Exit(-1.)
 			}
 
@@ -373,6 +376,10 @@ func (node *Node) Start() {
 						if err != nil {
 							panic(err)
 						}
+
+						if node.verboseOutput {
+							fmt.Printf("\n[File] Sent filepacket for \"%s\"", file.Name)
+						}
 					}
 
 					filesInfoDonePacket := protocol.Packet{
@@ -380,6 +387,10 @@ func (node *Node) Start() {
 					}
 					protocol.SendPacket(node.netInfo.Conn, filesInfoDonePacket)
 
+					if node.verboseOutput {
+						fmt.Printf("\n[File] Done sending filepackets")
+					}
+
 				case false:
 					// send a filepacket of a single file
 					fileToSend.ID = 0
@@ -407,11 +418,18 @@ func (node *Node) Start() {
 						panic(err)
 					}
 
+					if node.verboseOutput {
+						fmt.Printf("\n[File] Sent filepacket for \"%s\"", fileToSend.Name)
+					}
+
+					if node.verboseOutput {
+						fmt.Printf("\n[File] Done sending filepackets")
+					}
+
 				}
 
 			case protocol.HeaderReject:
 				node.state.Stopped = true
-
 				fmt.Printf("\nTransfer rejected. Disconnecting...")
 
 			case protocol.HeaderDisconnecting:
@@ -431,11 +449,19 @@ func (node *Node) Start() {
 						node.transferInfo.Sending.FilesToSend = append(node.transferInfo.Sending.FilesToSend[:index], node.transferInfo.Sending.FilesToSend[index+1:]...)
 
 						node.transferInfo.Sending.CurrentFileID++
+
+						if node.verboseOutput {
+							fmt.Printf("\n[File] receiver already has \"%s\"", fileToSend.Name)
+						}
 					}
 				}
 
 			}
 
+			if !node.verboseOutput {
+				go node.printTransferInfo(time.Second)
+			}
+
 			// Transfer section
 
 			if len(node.transferInfo.Sending.FilesToSend) == 0 {
@@ -445,7 +471,6 @@ func (node *Node) Start() {
 				})
 
 				fmt.Printf("\nTransfer ended successfully")
-
 				node.state.Stopped = true
 
 				continue
@@ -454,7 +479,6 @@ func (node *Node) Start() {
 			// if allowed to transfer and the other node is ready to receive packets - send one piece
 			// and wait for it to be ready again
 			if node.state.AllowedToTransfer && node.transferInfo.Sending.CanSendBytes {
-
 				// sending a piece of a single file
 
 				// determine an index of a file with current ID
@@ -470,6 +494,11 @@ func (node *Node) Start() {
 				switch err {
 				case protocol.ErrorSentAll:
 					// the file has been sent fully
+
+					if node.verboseOutput {
+						fmt.Printf("\n[File] fully sent \"%s\" -- %d bytes", node.transferInfo.Sending.FilesToSend[currentFileIndex].Name, node.transferInfo.Sending.FilesToSend[currentFileIndex].Size)
+					}
+
 					fileIDBuff := new(bytes.Buffer)
 					err = binary.Write(fileIDBuff, binary.BigEndian, node.transferInfo.Sending.FilesToSend[currentFileIndex].ID)
 					if err != nil {
@@ -505,8 +534,6 @@ func (node *Node) Start() {
 					panic(err)
 				}
 			}
-
-			go node.printTransferInfo(time.Second)
 		}
 
 	case false:
@@ -529,6 +556,7 @@ func (node *Node) Start() {
 			node.mutex.Unlock()
 
 			if stopped {
+				fmt.Printf("\n")
 				node.disconnect()
 				break
 			}
@@ -536,7 +564,7 @@ func (node *Node) Start() {
 			// receive incoming packets and decrypt them if necessary
 			incomingPacket, ok := <-node.packetPipe
 			if !ok {
-				fmt.Printf("\nThe connection has been closed unexpectedly")
+				fmt.Printf("\nThe connection has been closed unexpectedly\n")
 				os.Exit(-1)
 			}
 
@@ -636,6 +664,10 @@ func (node *Node) Start() {
 					panic(err)
 				}
 
+				if node.verboseOutput {
+					fmt.Printf("\n[File] Received info on \"%s\" - %d bytes", file.Name, file.Size)
+				}
+
 				if strings.TrimSpace(file.RelativeParentPath) == "" {
 					// does not have a parent dir
 					file.Path = filepath.Join(node.transferInfo.Receiving.DownloadsPath, file.Name)
@@ -686,6 +718,10 @@ func (node *Node) Start() {
 
 						protocol.SendPacket(node.netInfo.Conn, alreadyHavePacket)
 
+						if node.verboseOutput {
+							fmt.Printf("\n[File] already have \"%s\"", file.Name)
+						}
+
 					} else {
 						// not the same file. Remove it and await new bytes
 						os.Remove(file.Path)
@@ -769,6 +805,10 @@ func (node *Node) Start() {
 					if acceptedFile.ID == fileID {
 						// accepted
 
+						if node.verboseOutput {
+							fmt.Printf("\n[File] fully received \"%s\" -- %d bytes", acceptedFile.Name, acceptedFile.Size)
+						}
+
 						err = acceptedFile.Open()
 						if err != nil {
 							panic(err)
@@ -784,7 +824,7 @@ func (node *Node) Start() {
 						}
 
 						if realChecksum != acceptedFile.Checksum {
-							fmt.Printf("\n| %s is corrupted", acceptedFile.Name)
+							fmt.Printf("\n| \"%s\" is corrupted", acceptedFile.Name)
 							acceptedFile.Close()
 							break
 						} else {
@@ -827,7 +867,10 @@ func (node *Node) Start() {
 
 				fmt.Printf("\n%s disconnected", node.netInfo.Conn.RemoteAddr())
 			}
+
+			if !node.verboseOutput {
 				go node.printTransferInfo(time.Second)
 			}
 		}
+	}
 }

src/node/options.go

@@ -34,6 +34,7 @@ type ClientSideNodeOptions struct {
 type NodeOptions struct {
 	IsSending     bool
 	WorkingPort   uint
+	VerboseOutput bool
 	ServerSide    *ServerSideNodeOptions
 	ClientSide    *ClientSideNodeOptions
 }