curl_easy_perform() 失败：FTP 上传失败（STOR 命令）错误

Question

我未能成功将文件上传到 FTP 服务器，并显示“curl_easy_perform() failed: failed FTP upload (the STOR command)”作为错误。我搜索了很多，但找不到任何解决方案或建议。这是我的小代码

#define LOCAL_FILE      "D:/er.txt"      
#define REMOTE_URL      "ftp://ftp.nso.edu/incoming/" 

using namespace std;


static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
{
  curl_off_t nread;

  size_t retcode = fread(ptr, size, nmemb, (FILE*)stream);

  nread = (curl_off_t)retcode;

  fprintf(stderr, "*** We read %" CURL_FORMAT_CURL_OFF_T
          " bytes from file\n", nread);
  return retcode;
}


int main()
{
    CURL *curl;
  CURLcode res;
  FILE *hd_src;
  struct stat file_info;
  curl_off_t fsize;

  struct curl_slist *headerlist=NULL;


  /* get the file size of the local file */ 
  if(stat(LOCAL_FILE, &file_info)) {
    printf("Couldnt open '%s': %s\n", LOCAL_FILE, strerror(errno));
    return 1;
  }
  fsize = (curl_off_t)file_info.st_size;

  printf("Local file size: %" CURL_FORMAT_CURL_OFF_T " bytes.\n", fsize);

  /* get a FILE * of the same file */ 
  hd_src = fopen(LOCAL_FILE, "rb");

  /* In windows, this will init the winsock stuff */ 
  curl_global_init(CURL_GLOBAL_ALL);

  /* get a curl handle */ 
  curl = curl_easy_init();
  if(curl) {


    /* we want to use our own read function */ 
    curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);

    /* enable uploading */ 
    curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);

    /* specify target */ 
    curl_easy_setopt(curl,CURLOPT_URL, REMOTE_URL);

    /* pass in that last of FTP commands to run after the transfer */ 
    curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);

    /* now specify which file to upload */ 
    curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);

    /* Set the size of the file to upload (optional).  If you give a *_LARGE
       option you MUST make sure that the type of the passed-in argument is a
       curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
       make sure that to pass in a type 'long' argument. */ 
    curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
                     (curl_off_t)fsize);

    /* Now run off and do what you've been told! */ 
    res = curl_easy_perform(curl);
    /* Check for errors */ 
    if(res != CURLE_OK)
      fprintf(stderr, "curl_easy_perform() failed: %s\n",
              curl_easy_strerror(res));

    /* clean up the FTP commands list */ 
    curl_slist_free_all (headerlist);

    /* always cleanup */ 
    curl_easy_cleanup(curl);
  }
  fclose(hd_src); /* close the local file */ 

  curl_global_cleanup();         




  // Wait for keystroke
   getch();
  return 0;
}

Answer 1

设置

curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, char* allocatedMemoryForErrorBuffer);

字符指针将包含有关正在发生的错误的更多详细信息。通常，这适用于 HTTP 请求，但我的理解是它也适用于 FTP。