CURLOPT_SSH_COMPRESSION - enable SSH compression

Added in curl 7.56.0

0, disabled

Pass a long as parameter set to 1L to enable or 0L to disable. Enables built-in SSH compression. This is a request, not an order; the server may or may not do it.

int main(void) { CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com"); /* enable built-in compression */ curl_easy_setopt(curl, CURLOPT_SSH_COMPRESSION, 1L); /* Perform the request */ curl_easy_perform(curl); } }

CURLOPT_SSH_COMPRESSION - enable SSH compression

This functionality affects scp and sftp

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).

CURLOPT_ACCEPT_ENCODING(3), CURLOPT_TRANSFER_ENCODING(3) libcurl 2025-06-16 CURLOPT_SSH_COMPRESSION(3)

#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_COMPRESSION, long enable);