From b7b4dc0d49543175ab0d9bb1cdc257a2d7f7cf0a Mon Sep 17 00:00:00 2001 From: Viktor Szakats Date: Sat, 5 Aug 2017 09:26:04 +0000 Subject: ssh: add the ability to enable compression (for SCP/SFTP) The required low-level logic was already available as part of `libssh2` (via `LIBSSH2_FLAG_COMPRESS` `libssh2_session_flag()`[1] option.) This patch adds the new `libcurl` option `CURLOPT_SSH_COMPRESSION` (boolean) and the new `curl` command-line option `--compressed-ssh` to request this `libssh2` feature. To have compression enabled, it is required that the SSH server supports a (zlib) compatible compression method and that `libssh2` was built with `zlib` support enabled. [1] https://www.libssh2.org/libssh2_session_flag.html Ref: https://github.com/curl/curl/issues/1732 Closes https://github.com/curl/curl/pull/1735 --- src/tool_operate.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/tool_operate.c') diff --git a/src/tool_operate.c b/src/tool_operate.c index 1e8d0073c..3c8c6ed2f 100644 --- a/src/tool_operate.c +++ b/src/tool_operate.c @@ -1091,6 +1091,10 @@ static CURLcode operate_do(struct GlobalConfig *global, to fail if we are not talking to who we think we should */ my_setopt_str(curl, CURLOPT_SSH_HOST_PUBLIC_KEY_MD5, config->hostpubmd5); + + /* new in libcurl 7.56.0 */ + if(config->ssh_compression) + my_setopt(curl, CURLOPT_SSH_COMPRESSION, 1L); } if(config->cacert) -- cgit v1.2.3