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curl/docs/libcurl/opts/CURLOPT_DEFAULT_PROTOCOL.3
Nathaniel Waisbrot 9756d1da76 CURLOPT_DEFAULT_PROTOCOL: added
- Add new option CURLOPT_DEFAULT_PROTOCOL to allow specifying a default
protocol for schemeless URLs.

- Add new tool option --proto-default to expose
CURLOPT_DEFAULT_PROTOCOL.

In the case of schemeless URLs libcurl will behave in this way:

When the option is used libcurl will use the supplied default.

When the option is not used, libcurl will follow its usual plan of
guessing from the hostname and falling back to 'http'.
2015-08-22 21:57:14 -04:00

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2.8 KiB
Groff

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.TH CURLOPT_DEFAULT_PROTOCOL 3 "18 Aug 2015" "libcurl 7.45.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_DEFAULT_PROTOCOL \- default protocol to use if the URL is missing a
scheme name
.SH SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DEFAULT_PROTOCOL, char
*protocol);
.SH DESCRIPTION
This option tells libcurl to use \fIprotocol\fP if the URL is missing a scheme
name.
Use one of these protocol (scheme) names:
dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, ldaps, pop3,
pop3s, rtsp, scp, sftp, smb, smbs, smtp, smtps, telnet, tftp
An unknown or unsupported protocol causes error
\fICURLE_UNSUPPORTED_PROTOCOL\fP when libcurl parses a schemeless URL. Parsing
happens when \fIcurl_easy_perform(3)\fP or \fIcurl_multi_perform(3)\fP is
called. The protocols supported by libcurl will vary depending on how it was
built. Use \fIcurl_version_info(3)\fP if you need a list of protocol names
supported by the build of libcurl that you are using.
This option does not change the default proxy protocol (http).
Without this option libcurl would make a guess based on the host, see
\fICURLOPT_URL(3)\fP for details.
.SH DEFAULT
NULL (make a guess based on the host)
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
curl = curl_easy_init();
if(curl) {
/* set a URL without a scheme */
curl_easy_setopt(curl, CURLOPT_URL, "example.com");
/* set the default protocol (scheme) for schemeless URLs */
curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
/* Perform the request */
curl_easy_perform(curl);
}
.fi
.SH AVAILABILITY
Added in 7.45.0
.SH RETURN VALUE
CURLE_OK if the option is supported.
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
CURLE_UNKNOWN_OPTION if the option is not supported.
.SH "SEE ALSO"
.BR CURLOPT_URL "(3), "