How can i get ftp files show on my list widget using QNetworkAccessManager Qt 5.8?

J.Hilk

keep in mind that QFftp has not been updated for a very long time and therefore may not automatically support your target FTp-Servers protocolls.

I run into this, when one of my old projects worked fine with the old FTP-Server but failed completely with the new one.

jsulm

@walter-j I did not say you should not use commandFinished, just add another slot to see whether you get any state changes.

VRonin

You need an external library and I don't feel to recommend QFtp as it's not maintained anymore. libCURL is probably the standard library in the C/C++ world (and probably beyond). You can use a cpp wrapper like curlpp if you don't like the aftertaste C leaves in your mouth.

This example (source) will download the list of files from ftp://ftp.funet.fi/ and save it in a file called ftp-list

#include <stdio.h>
 
#include <curl/curl.h>
 
static size_t
write_response(void *ptr, size_t size, size_t nmemb, void *data)
{
  FILE *writehere = (FILE *)data;
  return fwrite(ptr, size, nmemb, writehere);
}
 
#define FTPBODY "ftp-list"
#define FTPHEADERS "ftp-responses"
 
int main(void)
{
  CURL *curl;
  CURLcode res;
  FILE *ftpfile;
  FILE *respfile;
 
  /* local file name to store the file as */ 
  ftpfile = fopen(FTPBODY, "wb"); /* b is binary, needed on win32 */ 
 
  /* local file name to store the FTP server's response lines in */ 
  respfile = fopen(FTPHEADERS, "wb"); /* b is binary, needed on win32 */ 
 
  curl = curl_easy_init();
  if(curl) {
    /* Get a file listing from sunet */ 
    curl_easy_setopt(curl, CURLOPT_URL, "ftp://ftp.funet.fi/");
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, ftpfile);
    /* If you intend to use this on windows with a libcurl DLL, you must use
       CURLOPT_WRITEFUNCTION as well */ 
    curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, write_response);
    curl_easy_setopt(curl, CURLOPT_HEADERDATA, respfile);
    res = curl_easy_perform(curl);
    /* Check for errors */ 
    if(res != CURLE_OK)
      fprintf(stderr, "curl_easy_perform() failed: %s\n",
              curl_easy_strerror(res));
 
    /* always cleanup */ 
    curl_easy_cleanup(curl);
  }
 
  fclose(ftpfile); /* close the local file */ 
  fclose(respfile); /* close the response file */ 
 
  return 0;
}

walter-j

stateChanged solved the problem.

Thank you guys

JK

SGaist

You're welcome !

Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum users may know a solution has been found :)

walter-j

i have searched for it . i didn't find

SGaist

Do you mean the "Topic Tools" button ?

There's one just under your original post or at the bottom of the page under the last post.

walter-j

how can i clone QHttp? can i have the link for the repository?

walter-j

when compiling QHttp i got this error : /home/walter-j/Documents/5.8/gcc_64/mkspecs/features/qt_module_headers.prf:153: error: Cannot write file /include/QtHttp/QtHttpDepends: Cannot create parent directory

can someone help me?

SGaist

Where did you download it from ?

walter-j

here : https://github.com/qt/qthttp

walter-j

can someone help me to download the right package of QHttp?

Thank your for your support

JK

VRonin

The correct repository for Qt Http is http://code.qt.io/cgit/qt/qthttp.git/
Again, this is unmaintained code that has been abandoned, my advise is to use an external library that can do the same things (and more) see links above

victor wang

@SGaist
Sorry i don't know how to install the module after i compiled the qtftp

Devopia53

@victor-wang

Build procedure:

cd QtFtp
<QTDIR>/bin/syncqt.pl -version 5.5.0
qmake
make
make install