NAME

       CURLOPT_PROXY - set proxy to use

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY, char *proxy);

DESCRIPTION

       Set  the proxy to use for the upcoming request. The parameter should be a char * to a zero
       terminated string holding the host name or dotted numerical IP address. A  numerical  IPv6
       address must be written within [brackets].

       To  specify  port  number  in this string, append :[port] to the end of the host name. The
       proxy's  port  number   may   optionally   be   specified   with   the   separate   option
       CURLOPT_PROXYPORT(3).  If  not  specified,  libcurl  will  default  to using port 1080 for
       proxies.

       The proxy string may be prefixed with [scheme]:// to specify which kind of proxy is  used.
       Use  socks4://,  socks4a://,  socks5://  or  socks5h:// (the last one to enable socks5 and
       asking the proxy to do the resolving, also known  as  CURLPROXY_SOCKS5_HOSTNAME  type)  to
       request  the  specific  SOCKS  version  to be used. No protocol specified, http:// and all
       others will be treated as HTTP proxies.

       Without a scheme prefix, CURLOPT_PROXYTYPE(3) can be used to specify which kind  of  proxy
       the string identifies.

       When  you  tell  the  library  to  use  a  HTTP  proxy, libcurl will transparently convert
       operations to HTTP even if you specify an FTP URL etc. This may have  an  impact  on  what
       other  features  of  the  library  you  can  use, such as CURLOPT_QUOTE(3) and similar FTP
       specifics that don't work unless you tunnel through the  HTTP  proxy.  Such  tunneling  is
       activated with CURLOPT_HTTPPROXYTUNNEL(3).

       libcurl respects the environment variables http_proxy, ftp_proxy, all_proxy etc, if any of
       those are set.  The  CURLOPT_PROXY(3)  option  does  however  override  any  possibly  set
       environment variables.

       Setting  the  proxy  string  to  "" (an empty string) will explicitly disable the use of a
       proxy, even if there is an environment variable set for it.

       A proxy host string can also  include  protocol  scheme  (http://)  and  embedded  user  +
       password.

DEFAULT

       Default is NULL, meaning no proxy is used.

       When  you  set  a  host name to use, do not assume that there's any particular single port
       number used widely for proxies. Specify it!

PROTOCOLS

       All except file://. Note that some protocols don't do very well over proxy.

EXAMPLE

       TODO

AVAILABILITY

       Since 7.14.1 the proxy environment variable names can include the protocol scheme.

       Since 7.21.7 the proxy string supports the socks protocols as "schemes".

RETURN VALUE

       Returns  CURLE_OK  if   proxies   are   supported,   CURLE_UNKNOWN_OPTION   if   not,   or
       CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO

       CURLOPT_PROXYPORT(3), CURLOPT_HTTPPROXYTUNNEL(3), CURLOPT_PROXYTYPE(3)