CURLOPT_PROXYTYPE(3)

NAME
CURLOPT_PROXYTYPE - proxy protocol type

SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYTYPE, long type);

DESCRIPTION
Pass one of the values below to set the type of the proxy.

CURLPROXY_HTTP
    HTTP Proxy. Default.

CURLPROXY_HTTPS
    HTTPS Proxy using HTTP/1. (Added in 7.52.0 for OpenSSL and GnuTLS. Since 7.87.0, it also works for mbedTLS, Rustls, Schannel and wolfSSL.)

CURLPROXY_HTTPS2
    HTTPS Proxy and attempt to speak HTTP/2 over it. (Added in 8.1.0)

CURLPROXY_HTTPS3
    HTTPS Proxy and attempt to speak HTTP/3 over it. (Added in 8.21.0) This feature is experimental and requires a build with HTTP/3 proxy support enabled.

CURLPROXY_HTTP_1_0
    HTTP 1.0 Proxy. This is similar to CURLPROXY_HTTP except it uses HTTP/1.0 for any CONNECT tunneling. It does not change the HTTP version of the actual HTTP requests, controlled by CURLOPT_HTTP_VERSION(3).

CURLPROXY_SOCKS4
    SOCKS4 Proxy.

CURLPROXY_SOCKS4A
    SOCKS4a Proxy. Proxy resolves URL hostname.

CURLPROXY_SOCKS5
    SOCKS5 Proxy.

CURLPROXY_SOCKS5_HOSTNAME
    SOCKS5 Proxy. Proxy resolves URL hostname.

Often it is more convenient to specify the proxy type with the scheme part of the CURLOPT_PROXY(3) string.

DEFAULT
CURLPROXY_HTTP

PROTOCOLS
This functionality affects all supported protocols

EXAMPLE
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_PROXY, "local.example.com:1080");
    /* set the proxy type */
    curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
    result = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

HISTORY
CURLPROXY_* enums became long types in 8.16.0, prior to this version a long cast was necessary when passed to curl_easy_setopt(3).

AVAILABILITY
Added in curl 7.10

RETURN VALUE
curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

SEE ALSO
CURLOPT_PROXY(3), CURLOPT_PROXYPORT(3)