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.TH curl_url_set 3 "6 Aug 2018" "libcurl" "libcurl Manual"
curl_url_set - set a URL part
.B #include <curl/curl.h>
CURLUcode curl_url_set(CURLU *url,
CURLUPart part,
const char *content,
unsigned int flags)
Given the \fIurl\fP handle of an already parsed URL, this function lets the
user set/update individual pieces of it.
The \fIpart\fP argument should identify the particular URL part (see list
below) to set or change, with \fIcontent\fP 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 encoded.
Setting a part to a NULL pointer will effectively remove that part's contents
from the CURLU handle.
The \fIflags\fP 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 \fIurl\fP parameter. The
string must point to a correctly formatted "RFC 3986+" URL or be a NULL
Scheme cannot be URL decoded on set.
The host name. If it is IDNA the string must then be encoded as your locale
says or UTF-8 (when WinIDN is used). If it is a bracketed IPv6 numeric address
it may contain a zone id (or you can use CURLUPART_ZONEID).
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 error.
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 \fICURLU_APPENDQUERY\fP 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 \fICURLU_APPENDQUERY\fP is used together with \fICURLU_URLENCODE\fP, 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 \fIcurl_url_set(3)\fP to set a non-supported scheme.
When set, \fIcurl_url_set(3)\fP 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 manner.
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 \fICURLU_GUESS_SCHEME\fP
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
\fICURLU_DEFAULT_SCHEME\fP option which takes precedence if both are set.
If set, skips authority checks. The RFC allows individual schemes to omit the
host part (normally the only mandatory part of the authority), but libcurl
cannot know whether this is permitted for custom schemes. Specifying the flag
permits empty authority sections, similar to how file scheme is handled.
Returns a CURLUcode error value, which is CURLUE_OK (0) if everything went
A URL string passed on to \fIcurl_url_set(3)\fP for the \fBCURLUPART_URL\fP
part, must be shorter than 8000000 bytes otherwise it returns
\fBCURLUE_MALFORMED_INPUT\fP (added in 7.65.0).
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.
.BR curl_url_cleanup "(3), " curl_url "(3), " curl_url_get "(3), "
.BR curl_url_dup "(3), "