added mutex to writer

TCPClient.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"regexp"
 	"strings"
+	"sync"
 	"time"
 
 	log "github.com/sirupsen/logrus"
@@ -26,6 +27,7 @@ type TCPClient struct {
 	Reader               *bufio.Reader
 	Writer               *bufio.Writer
 	Scanner              *bufio.Scanner
+	Mutex                sync.Mutex
 	Conn                 net.Conn
 	TCPServer            TCPServer
 	MsgChan              chan string
@@ -86,8 +88,10 @@ func (c *TCPClient) StartClient() {
 
 	go func() {
 		for message := range c.TCPServer.CmdChan {
+			c.Mutex.Lock()
 			Log.Infof("Received Command: %s", message)
 			c.Write([]byte(message + "\r\n"))
+			c.Mutex.Unlock()
 		}
 	}()
 
@@ -101,40 +105,52 @@ func (c *TCPClient) Close() {
 
 func (c *TCPClient) SetFilters() {
 	if Cfg.Cluster.FT8 {
+		c.Mutex.Lock()
 		c.Write([]byte("set/ft8\r\n"))
 		Log.Info("FT8: On")
+		c.Mutex.Unlock()
 	}
 
 	if Cfg.Cluster.Skimmer {
+		c.Mutex.Lock()
 		c.Write([]byte("set/skimmer\r\n"))
 		Log.Info("Skimmer: On")
+		c.Mutex.Unlock()
 	}
 
 	if Cfg.Cluster.FT4 {
+		c.Mutex.Lock()
 		c.Write([]byte("set/ft4\r\n"))
 		Log.Info("FT4: On")
+		c.Mutex.Unlock()
 	}
 
 	if !Cfg.Cluster.FT8 {
+		c.Mutex.Lock()
 		c.Write([]byte("set/noft8\r\n"))
 		Log.Info("FT8: Off")
+		c.Mutex.Unlock()
 	}
 
 	if !Cfg.Cluster.FT4 {
+		c.Mutex.Lock()
 		c.Write([]byte("set/noft4\r\n"))
 		Log.Info("FT4: Off")
+		c.Mutex.Unlock()
 	}
 
 	if !Cfg.Cluster.Skimmer {
+		c.Mutex.Lock()
 		c.Write([]byte("set/noskimmer\r\n"))
 		Log.Info("Skimmer: Off")
+		c.Mutex.Unlock()
 	}
 }
 
 func (c *TCPClient) ReadLine() {
 
 	for {
-		// Need to check data with space first to find login and then use \n
+
 		if !c.LoggedIn {
 			message, err := c.Reader.ReadBytes(':')
 			if err != nil {
@@ -143,9 +159,6 @@ func (c *TCPClient) ReadLine() {
 				c.StartClient()
 			}
 
-			// message, _ = strings.CutSuffix(message, "\n")
-			// message, _ = strings.CutSuffix(message, "\r")
-
 			if strings.Contains(string(message), Cfg.Cluster.LoginPrompt) || strings.Contains(string(message), "login:") {
 				time.Sleep(time.Second * 1)
 				Log.Debug("Found login prompt...sending callsign")
@@ -159,7 +172,6 @@ func (c *TCPClient) ReadLine() {
 		if c.LoggedIn {
 			message, err := c.Reader.ReadBytes('\n')
 			messageString := string(message)
-			// Log.Println(messageString)
 
 			if messageString != "" {
 				if err != nil {