curl_easy_escape man page

curl_easy_escape — URL encodes the given string


#include <curl/curl.h>

char *curl_easy_escape( CURL *curl, const char *string , int length );


This function converts the given input string to a URL encoded string and returns that as a new allocated string. All input characters that are not a-z, A-Z, 0-9, '-', '.', '_' or '~' are converted to their "URL escaped" version (%NN where NN is a two-digit hexadecimal number).

If length is set to 0 (zero), curl_easy_escape(3) uses strlen() on the input string to find out the size.

You must curl_free(3) the returned string when you're done with it.


Added in 7.15.4 and replaces the old curl_escape(3) function.

Return Value

A pointer to a zero terminated string or NULL if it failed.


CURL *curl = curl_easy_init();
if(curl) {
  char *output = curl_easy_escape(curl, "data to convert", 15);
  if(output) {
    printf("Encoded: %s\n", output);

See Also

curl_easy_unescape(3), curl_free(3), RFC3986

Referenced By

curl_easy_unescape(3), curl_escape(3), curl_free(3), curl_getdate(3), CURLOPT_POSTFIELDS(3).

February 03, 2016 libcurl 5.5.5 libcurl Manual