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CURLOPT_READDATA

Section: curl_easy_setopt options (3)
Updated: May 01, 2016
Index Return to Main Contents

 

NAME

CURLOPT_READDATA - custom pointer passed to the read callback  

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_READDATA, void *pointer);  

DESCRIPTION

Data pointer to pass to the file read function. If you use the CURLOPT_READFUNCTION(3) option, this is the pointer you'll get as input in the 4th argument to the callback.

If you don't specify a read callback but instead rely on the default internal read function, this data must be a valid readable FILE * (cast to 'void *').

If you're using libcurl as a win32 DLL, you MUST use a CURLOPT_READFUNCTION(3) if you set this option.  

DEFAULT

By default, this is a FILE * to stdin.  

PROTOCOLS

This is used for all protocols when sending data.  

EXAMPLE

CURL *curl = curl_easy_init();
struct MyData this;
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

  /* pass pointer that gets passed in to the
     CURLOPT_READFUNCTION callback */
  curl_easy_setopt(curl, CURLOPT_READDATA, &this);

  curl_easy_perform(curl);
}
 

AVAILABILITY

This option was once known by the older name CURLOPT_INFILE, the name CURLOPT_READDATA(3) was introduced in 7.9.7.  

RETURN VALUE

This will return CURLE_OK.  

SEE ALSO

CURLOPT_READFUNCTION(3), CURLOPT_WRITEDATA(3),


 

Index

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO


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