CURLOPT_PROXYTYPE(3) Library Functions Manual 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 BearSSL, mbedTLS, Rustls,
Schannel, Secure Transport and wolfSSL.)
CURLPROXY_HTTPS2
HTTPS Proxy and attempt to speak HTTP/2 over it. (Added in 8.1.0)
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 CUR-
LOPT_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 ret;
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, (long)CURLPROXY_SOCKS5);
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
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)
libcurl 2026-07-12 CURLOPT_PROXYTYPE(3)
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