---
name: "CURLOPT_PROXYPORT"
section: "3"
platform: "macos"
package: "curl"
version: "166.0.0.0.1"
release: "macOS 26.5"
platforms: ["linux", "macos"]
url: "https://new.carta.tech/CURLOPT_PROXYPORT"
---

# CURLOPT\_PROXYPORT(3)

port number the proxy listens on

## NAME

CURLOPT\_PROXYPORT - port number the proxy listens on

## SYNOPSIS

```
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYPORT, long port);
```

## DESCRIPTION

We discourage use of this option.

Pass a long with this option to set the proxy port to connect to unless it is specified in the proxy string *[CURLOPT\_PROXY(3)](/CURLOPT_PROXY/3.md)* or uses 443 for https proxies and 1080 for all others as default.

While this accepts a 'long', the port number is 16 bit so it cannot be larger than 65535.

## DEFAULT

0, not specified which makes it use the default port

## PROTOCOLS

All

## EXAMPLE

```
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
    curl_easy_setopt(curl, CURLOPT_PROXY, "localhost");
    curl_easy_setopt(curl, CURLOPT_PROXYPORT, 8080L);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}
```

## AVAILABILITY

Always

## RETURN VALUE

Returns CURLE\_OK

## SEE ALSO

[**CURLINFO\_PRIMARY\_PORT**(3)](/CURLINFO_PRIMARY_PORT/3.md), [**CURLOPT\_PORT**(3)](/CURLOPT_PORT/3.md), [**CURLOPT\_PROXY**(3)](/CURLOPT_PROXY/3.md), [**CURLOPT\_PROXYTYPE**(3)](/CURLOPT_PROXYTYPE/3.md)