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CURLOPT_F...VE_TO_USER(3) Library Functions Manual CURLOPT_F...VE_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 pointer as parameter, pointing to a string which is used to authenticate if the usual FTP "USER user" and "PASS password" negotia- tion 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 This functionality affects ftp only EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode res; curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/foo.bin"); curl_easy_setopt(curl, CURLOPT_FTP_ALTERNATIVE_TO_USER, "two users"); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } } AVAILABILITY Added in curl 7.15.5 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_FTP_ACCOUNT(3), CURLOPT_FTP_SKIP_PASV_IP(3), CURLOPT_SERVER_RE- SPONSE_TIMEOUT(3), CURLOPT_USERNAME(3) libcurl 2025-06-03 CURLOPT_F...VE_TO_USER(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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