Fix timeout issue

Fix timeout issue during TCP connection.

Author: budulinek

arduino-modbus-rtu-tcp-gateway/02-modbus-tcp.ino

@@ -133,7 +133,6 @@ void recvTcp()
         client.write(lowByte(crc));        // send CRC, low byte first
         client.write(highByte(crc));
       }
-      client.stop();
       ethTxCount += 5;
       if (!localConfig.enableRtuOverTcp) ethTxCount += 4;
     }

arduino-modbus-rtu-tcp-gateway/03-modbus-rtu.ino

@@ -112,7 +112,6 @@ void recvSerial()
             client.write(MBAP, 6);
             client.write(serialIn, rxNdx - 2);      //send without CRC
           }
-          client.stop();
           ethTxCount += rxNdx;
           if (!localConfig.enableRtuOverTcp) ethTxCount += 4;
         }
@@ -161,7 +160,6 @@ void recvSerial()
             client.write(lowByte(crc));        // send CRC, low byte first
             client.write(highByte(crc));
           }
-          client.stop();
           ethTxCount += 5;
           if (!localConfig.enableRtuOverTcp) ethTxCount += 4;
         }

arduino-modbus-rtu-tcp-gateway/04-webserver.ino

@@ -144,7 +144,6 @@ void recvWeb()
       send204(client);                         // if you don't have a favicon, send 204
     else                                       // if the page is unknown, HTTP response code 404
       send404(client);
-    client.stop();
     action = NONE;
     dbg(F("[web] Stop client "));
   }

arduino-modbus-rtu-tcp-gateway/05-pages.ino

@@ -564,7 +564,7 @@ void send404(EthernetClient &client)
   client.println(F("HTTP/1.0 404 Not Found"));
   client.println(F("Content-Type: text/plain"));  // simple plain text without html tags
   client.println();
-  client.println(F("File Fot Found"));
+  client.println(F("File Not Found"));
 }