Provided by: libcurl4-doc_7.65.3-1ubuntu3_all bug


       curl_url_set - set a URL part


       #include <curl/curl.h>

       CURLUcode curl_url_set(CURLU *url,
                              CURLUPart part,
                              const char *content,
                              unsigned int flags)


       Given  the  url  handle  of  an already parsed URL, this function lets the user set/update
       individual pieces of it.

       The part argument should identify the particular URL part  (see  list  below)  to  set  or
       change,  with  content pointing to a zero terminated string with the new contents for that
       URL part. The contents should be in the form  and  encoding  they'd  use  in  a  URL:  URL

       Setting  a  part  to  a NULL pointer will effectively remove that part's contents from the
       CURLU handle.

       The flags argument is a bitmask with independent features.


              Allows the full URL of the  handle  to  be  replaced.  If  the  handle  already  is
              populated with a URL, the new URL can be relative to the previous.

              When successfully setting a new URL, relative or absolute, the handle contents will
              be replaced with the information of the newly set URL.

              Pass a pointer to a zero terminated string to the url parameter.  The  string  must
              point to a correctly formatted "RFC 3986+" URL or be a NULL pointer.

              Scheme cannot be URL decoded on set.




              The  host name can use IDNA. The string must then be encoded as your locale says or
              UTF-8 (when winidn is used).

              If the host name is a numeric IPv6 address, this field can also be set.

              Port cannot be URL encoded on set. The given port number is provided  as  a  string
              and  the  decimal  number must be between 1 and 65535. Anything else will return an

              If a path is set in the URL without a leading  slash,  a  slash  will  be  inserted
              automatically when this URL is read from the handle.

              The query part will also get spaces converted to pluses when asked to URL encode on
              set with the CURLU_URLENCODE bit.

              If used together with the CURLU_APPENDQUERY bit, the provided part will be appended
              on  the  end  of  the  existing query - and if the previous part didn't end with an
              ampersand (&), an ampersand will be inserted before the new appended part.

              When CURLU_APPENDQUERY is used together with CURLU_URLENCODE, the first '='  symbol
              will not be URL encoded.

              The question mark in the URL is not part of the actual query contents.

              The hash sign in the URL is not part of the actual fragment contents.


       The flags argument is zero, one or more bits set in a bitmask.

              If set, allows curl_url_set(3) to set a non-supported scheme.

              When  set,  curl_url_set(3)  URL encodes the part on entry, except for scheme, port
              and URL.

              When setting the path component with URL encoding enabled, the slash character will
              be skipped.

              The query part gets space-to-plus conversion before the URL conversion.

              This  URL  encoding is charset unaware and will convert the input on a byte-by-byte

              If set, will make libcurl allow the URL to be set without a scheme  and  then  sets
              that  to the default scheme: HTTPS. Overrides the CURLU_GUESS_SCHEME option if both
              are set.

              If set, will make libcurl allow the URL to be set without a scheme and  it  instead
              "guesses"  which scheme that was intended based on the host name.  If the outermost
              sub-domain name matches DICT, FTP, IMAP, LDAP, POP3 or SMTP then that  scheme  will
              be  used,  otherwise  it picks HTTP. Conflicts with the CURLU_DEFAULT_SCHEME option
              which takes precedence if both are set.


       Returns a CURLUcode error value, which is CURLUE_OK (0) if everything went fine.

       If this function returns an error, no URL part is returned.


         CURLUcode rc;
         CURLU *url = curl_url();
         rc = curl_url_set(url, CURLUPART_URL, "", 0);
         if(!rc) {
           char *scheme;
           /* change it to an FTP URL */
           rc = curl_url_set(url, CURLUPART_SCHEME, "ftp", 0);


       Added in curl 7.62.0. CURLUPART_ZONEID was added in 7.65.0.


       curl_url_cleanup(3), curl_url(3), curl_url_get(3), curl_url_dup(3),