Hi all,

I'm facing a jet strange problem. At the moment most of our applicatios are
using the libcurl (latest version: 7.21.1)
But now one of our customers came up and complained that retrieving a file via
the standart RedHat 4 sftp client would be much faster than our apps using the
curl library.
So I made a few tests and hacked a quick-and-dirty C prog and used the unix
"time" command to measure the download time.

Swiftly said: It took nearly 12 minutes to get 250 MB via curltest2 app while it
only took roughly 3 minutes with the sftp client.

Any ideas ?

here is the curltest2:

#include <stdio.h>
 
#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>

size_t my_fwrite(void *buffer, size_t size, size_t nmemb, FILE *stream)
{
    static int first_time=1;
    char outfilename[FILENAME_MAX] = "testfile.bin";
    static FILE *outfile;
    size_t written;
    if (first_time)
    {
        first_time = 0;
        outfile = fopen(outfilename,"wb");
        if (outfile == NULL)
    {
            return -1;
        }
        fprintf(stderr,"The body is <%s>\n",outfilename);
    }
    written = fwrite(buffer,size,nmemb,outfile);
    return written;
}

int main(void)
{
  CURL *curl;
  CURLcode res;
 
  curl = curl_easy_init();
  if(curl)
  {
    curl_easy_setopt(curl,
CURLOPT_URL,"sftp://192.168.0.1/test/myTestfile.bin");
    curl_easy_setopt(curl, CURLOPT_USERPWD, "bla:blub");
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);

    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);

    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);

    if(CURLE_OK != res)
    {
             fprintf(stderr, "curl told us %d\n", res);
    }
   }

   return 0;
}

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Received on 2010-09-30