From: Oleksiy <patriot_of_ua_at_ukr.net>
Date: Mon, 19 Sep 2011 19:19:29 +0300

('binary' encoding is not supported, stored as-is) ('binary' encoding is not supported, stored as-is)    I'm uploading a file to yutube. As file can be very large, I don't
   want to load it all in the buffer, but in parts. With this working
   pieces of code I did uploading, loading whole file into the char *
   buffer. POST request is described here -
   http://code.google.com/apis/youtube/2.0/developers_guide_protocol_direct_uploading.html#Sending_a_Direct_Upload_API_Request

>

>

   ****

>

   body.append("--d31fcjR2\r\n");

> body.append("Content-Type: application/atom+xml;
   charset=UTF-8\r\n");
   body.append("\r\n");
   body.append("<?xml version=\"1.0\"?>\r\n");
   body.append("<entry xmlns=\"http://www.w3.org/2005/Atom\"\r\n");
   body.append("xmlns:media=\"http://search.yahoo.com/mrss/\"\r\n");
   body.append("xmlns:yt=\"http://gdata.youtube.com/schemas/2007\">\r\n");
   body.append("<media:group>\r\n");
   body.append("<media:title type=\"plain\"> title </media:title>\r\n ");
   body.append("<media:description type=\"plain\">\r\n");
   body.append(" description \r\n");
   body.append("</media:description>\r\n");
   body.append("<media:category\r\n");
    body.append("scheme=\"http://gdata.youtube.com/schemas/2007/categories.cat\">People\r\n");
   body.append("</media:category>\r\n");
   body.append("<media:keywords> keywords </media:keywords>\r\n ");
   body.append("</media:group>\r\n");
   body.append("</entry>\r\n");
   body.append("--d31fcjR2\r\n");
   body.append("Content-Type: video/H264\r\n");//content type
   body.append("Content-Transfer-Encoding: binary\r\n");
   body.append("\r\n");
    body.append(buffer, size);//*********file
   body.append("\r\n");

   body.append("--d31fcjR2--");

>

>

   ****

>

>

   curl_easy_setopt(curl, CURLOPT_URL, urlUpload);
   curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer);
   curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE, body.length());
   curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header);//setting header
   curl_easy_setopt(curl, CURLOPT_POSTFIELDS, body.c_str());//setting
   body

>

   ***

>

>

   To load file to a buffer by parts as I have read the manual I must use
   read_callback. Problem is that I have to send some parts of xml before
   and after the file. So I change that code to this:

>

>

   ***

>

   FILE *file = fopen(path, "rb");

>

   ***

>

>

   curl_easy_setopt(curl, CURLOPT_URL, urlUpload);
   curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer);
   curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);//additional information,
   for debug
    //curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE, body.length());
   // I have tried with and without it, passing it manually real size of
   the body
   curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header);//setting header
   curl_easy_setopt(curl, CURLOPT_READFUNCTION, ReadCallback); // use our
   own read function
    curl_easy_setopt(curl, CURLOPT_READDATA, file);//specify what data
   will be uploaded

>

>

   size_t ReadCallback(void *ptr, size_t size, size_t nmemb, void
   *userdata)
   {
   FILE* file = (FILE *)userdata;
   size_t retcode;
   string body;
   if(beginning == 0)
   {
   body.append("--d31fcjR2\r\n");
   body.append("Content-Type: application/atom+xml; charset=UTF-8\r\n");
   body.append("\r\n");
   body.append("<?xml version=\"1.0\"?>\r\n");
   body.append("<entry xmlns=\"http://www.w3.org/2005/Atom\"\r\n");
   body.append("xmlns:media=\"http://search.yahoo.com/mrss/\"\r\n");
   body.append("xmlns:yt=\"http://gdata.youtube.com/schemas/2007\">\r\n");
   body.append("<media:group>\r\n");
   body.append("<media:title type=\"plain\">Test
   title</media:title>\r\n");//title
   body.append("<media:description type=\"plain\">\r\n");
   body.append("Description\r\n");//description
   body.append("</media:description>\r\n");
   body.append("<media:category\r\n");
   body.append("scheme=\"http://gdata.youtube.com/schemas/2007/categories.cat\">People\r\n");//category
   http://code.google.com/apis/youtube/2.0/reference.html#youtube_data_api_tag_media:category
   body.append("</media:category>\r\n");
   body.append("<media:keywords>ara,arara</media:keywords>\r\n");//keywords
   body.append("</media:group>\r\n");
   body.append("</entry>\r\n");
   body.append("--d31fcjR2\r\n");
   body.append("Content-Type: video/H264\r\n");//content type
   body.append("Content-Transfer-Encoding: binary\r\n");
   body.append("\r\n");
   beginning++;
   retcode = body.length();
   ptr = &body;
   }
   else
   retcode = fread(ptr, size, nmemb, file);

   if(retcode == 0 and beginning == 1)
   {
   beginning++;
   body.append("\r\n");
   body.append("--d31fcjR2--");
   retcode = body.length();
   ptr = &body;
   }

   return retcode;
   }

>

>

>

   And this doesn't work, I'm receiving Error 400 (Bad Request). I'm for
   sure form post body wrong

>

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Received on 2011-09-19