FTP Struggles - Failed to retrieve directory listing

Projects General Guidance
1

I'm trying to set up an fpt server on my esp32 using this library.

My Filezilla is using unsecure with max 1 connection as per various instructions for this type of connection.

My code is as follows

#include <Arduino.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <WiFi.h>
#include "FS.h"

#include "ESP-FTP-Server-Lib.h"
#include "FTPFilesystem.h"

#define FTP_USER "ftp"
#define FTP_PASSWORD "ftp"

FTPServer ftp;

void WiFiSetup();
void SDCardSetup();
void wifiReconnect();
void ftpSetup();

// Wi-Fi Credentials
const char* ssid       = "The Internet";
const char* password   = "password";

// SC Card
const int chipSelect = 5; // SPI SS Pin (5 is default on esp32)

void setup()
{

  Serial.begin(115200);

  WiFiSetup();
  SDCardSetup();
  ftpSetup();

  Serial.println("\n***Setup Complete***\n");
}

//=================================================================================================

void loop()
{
  ftp.handle();
}

//=================================================================================================

void WiFiSetup()
{

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi..");
  delay(2000);


  if ((WiFi.status() == WL_CONNECTED))
  {
    Serial.println("...Connected!");
    Serial.print("IP Address: ");
    Serial.println(WiFi.localIP());
    delay(500);
  }

  else
  {
    Serial.println("...Can't connect to WiFi!");
  }
}

//-------------------------------------------------------------------------------------------------

void SDCardSetup()
{

  Serial.print("Initializing SD card...");

  if (!SD.begin(chipSelect))
  {
    Serial.println("initialization failed!");
    while (1)
      ;
  }
  Serial.println("initialization complete.");
}

//-------------------------------------------------------------------------------------------------

void ftpSetup()
{

	ftp.addUser(FTP_USER, FTP_PASSWORD);
  ftp.addFilesystem("SD", &SD);

  if (ftp.begin())
  {

    Serial.println("FTP Setup Complete");
  }

  else
  {
    Serial.println("FTP Setup failed");
  }
}

//-------------------------------------------------------------------------------------------------

The code compiles fine and runs. When I'm trying to connect I get the following message in Filezilla.

Status:	Connecting to 192.168.0.104:21...
Status:	Connection established, waiting for welcome message...
Status:	Plain FTP is insecure. Please switch to FTP over TLS.
Status:	Server does not support non-ASCII characters.
Status:	Logged in
Status:	Retrieving directory listing...
Command:	PWD
Response:	257 "/" is your current directory
Command:	TYPE I
Response:	200 TYPE is now 8-bit binary
Command:	PASV
Response:	500 Unknown command
Command:	PORT 192,168,0,46,252,195
Response:	200 PORT command successful
Command:	MLSD
Response:	425 No data connection
Error:	Failed to retrieve directory listing

and this is what gets printed to the serial..

Connecting to WiFi.....Connected!
IP Address: 192.168.0.104        
Initializing SD card...initialization complete.
FTP Setup Complete

***Setup Complete***

New Connection from 192.168.0.46:64706
USER ftp
PASS ftp
PWD
TYPE I
PASV
500 Unknown command
PORT 192,168,0,46,252,195
MLSD

This is the example code

#if defined(ESP32)
#include <SPIFFS.h>
#include <SD.h>
#include <WiFi.h>
#elif defined(ESP8266)
#include <FS.h>
#include <ESP8266WiFi.h>
#endif

#include "ESP-FTP-Server-Lib.h"
#include "FTPFilesystem.h"

#define WIFI_SSID "SSID"
#define WIFI_PASSWORD "PASSWORD"

#define FTP_USER "ftp"
#define FTP_PASSWORD "ftp"

#ifndef UNIT_TEST
FTPServer ftp;

void setup()
{
	Serial.begin(115200);
#if defined(ESP32)
	SPIFFS.begin(true);
	SPI.begin(14, 2, 15);
	if(!SD.begin(13))
	{
		Serial.println("SD Card Mount Failed");
	}
#elif defined(ESP8266)
	SPIFFS.begin();
#endif


	WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
	while (WiFi.status() != WL_CONNECTED)
	{
		delay(500);
		Serial.print(".");
	}
	Serial.println("");
	Serial.print("Connected to ");
	Serial.println(WIFI_SSID);
	Serial.print("IP address: ");
	Serial.println(WiFi.localIP());

	ftp.addUser(FTP_USER, FTP_PASSWORD);
#if defined(ESP32)
	ftp.addFilesystem("SD", &SD);
#endif
	ftp.addFilesystem("SPIFFS", &SPIFFS);

	ftp.begin();

	Serial.println("...---'''---...---'''---...---'''---...");
}

void loop()
{
	ftp.handle();
}
#endif

Any help or pointers to get this working would be appreciated.

Thanks

2

Hmmmm...I can access it using my phone ftp on the same network but not when using my laptop...

Maybe a firewall issue. Will check tomorrow

3

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