CURLOPT_PROXYUSERNAME(3)

CURLOPT_PROXYUSERNAME3

Username to use for proxy authentication

Usage

#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYUSERNAME,
                          char *username);

Overview

Pass a char pointer as parameter, which should be pointing to the null-terminated username to use for the transfer.

CURLOPT_PROXYUSERNAME(3) sets the username to be used in protocol authentication with the proxy.

To specify the proxy password use the CURLOPT_PROXYPASSWORD(3).

The application does not have to keep the string around after setting this option.

Default

blank

Protocols

This functionality affects all supported protocols

Examples

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
    curl_easy_setopt(curl, CURLOPT_PROXY, "http://localhost:8080");
    curl_easy_setopt(curl, CURLOPT_PROXYUSERNAME, "mrsmith");
    curl_easy_setopt(curl, CURLOPT_PROXYPASSWORD, "qwerty");
    result = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

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).

Releases

7 releases since Debian 8 (Jessie); the text changed 6 times.

  1. 8
  2. 9
  3. 10
  4. 11
  5. 12
  6. 13
  7. Arch

Availability

Added in curl 7.19.1

From curl 8.23.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.