updated README, avoid gooutinges for TCP handling, force disconnects when client is gone.

ptc.go

@@ -7,9 +7,6 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
-	"github.com/TwiN/go-color"
-	"github.com/albenik/go-serial/v2"
-	"github.com/augustoroman/hexdump"
 	"log"
 	"math"
 	"math/bits"
@@ -22,6 +19,10 @@ import (
 	"sync"
 	"time"
 
+	"github.com/TwiN/go-color"
+	"github.com/albenik/go-serial/v2"
+	"github.com/augustoroman/hexdump"
+
 	"github.com/howeyc/crc16"
 )
 
@@ -320,7 +321,7 @@ func (p *Modem) modemThread() {
 	time.Sleep(time.Second)
 	const chunkSize = 1024
 	p.wg.Add(1)
-	for !p.flags.stopmodem {
+	for !(p.flags.stopmodem && s.Command.Cmd.GetLen() == 0) {
 
 		// TX data
 		if p.getNumFramesNotTransmitted() < MaxFrameNotTX {
@@ -358,7 +359,7 @@ func (p *Modem) modemThread() {
 					s.Command.Response.Enqueue(ans[2:])
 				}
 			}
-			writeDebug("Answer from modem: "+ans, 1)
+			writeDebug("Answer from modem: "+hex.EncodeToString([]byte(ans)), 1)
 			// TODO: Catch errors!
 		}
 
@@ -914,7 +915,9 @@ func (p *Modem) read(readsize int) (int, []byte, error) {
 			writeDebug("ERROR in ReadyToRead: "+err.Error(), 3)
 		} else {
 			chunkSize = int(t)
-			writeDebug(fmt.Sprintf("chunksize: %d", chunkSize), 3)
+			if chunkSize > 0 {
+				writeDebug(fmt.Sprintf("chunksize: %d", chunkSize), 3)
+			}
 		}
 	} else {
 		chunkSize = readsize