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CURLOPT_FTP_ALTERNATIVE_TO_USER(3)  libcurl CURLOPT_FTP_ALTERNATIVE_TO_USER(3)

NAME

CURLOPT_FTP_ALTERNATIVE_TO_USER - command to use instead of USER with FTP

SYNOPSIS

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

DESCRIPTION

Pass a char * as parameter, pointing to a string which will be used to authenticate if the usual FTP "USER user" and "PASS password" negotiation fails. This is currently only known to be required when connecting to Tumbleweed's Secure Transport FTPS server using client certificates for authentication. The application does not have to keep the string around after setting this option.

DEFAULT

NULL

PROTOCOLS

FTP

EXAMPLE

CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/foo.bin"); curl_easy_setopt(curl, CURLOPT_FTP_ALTERNATIVE_TO_USER, "two users"); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); }

AVAILABILITY

Added in 7.15.5

RETURN VALUE

Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO

CURLOPT_FTP_SKIP_PASV_IP(3), CURLOPT_SERVER_RESPONSE_TIMEOUT(3), ibcurl 8.1.2 April 26, 2023 CURLOPT_FTP_ALTERNATIVE_TO_USER(3)

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