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authorViktor Szakats <vszakats@users.noreply.github.com>2017-08-05 09:26:04 +0000
committerJay Satiro <raysatiro@yahoo.com>2017-08-17 03:32:00 -0400
commitb7b4dc0d49543175ab0d9bb1cdc257a2d7f7cf0a (patch)
tree40a6f41fe368481822bc8807ef219cf279d7a500 /docs/libcurl/opts
parentd18941ea175503ba0cf0792c1622c7a4a7c4b880 (diff)
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
Diffstat (limited to 'docs/libcurl/opts')
-rw-r--r--docs/libcurl/opts/CURLOPT_SSH_COMPRESSION.358
-rw-r--r--docs/libcurl/opts/Makefile.inc1
2 files changed, 59 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_SSH_COMPRESSION.3 b/docs/libcurl/opts/CURLOPT_SSH_COMPRESSION.3
new file mode 100644
index 000000000..193320512
--- /dev/null
+++ b/docs/libcurl/opts/CURLOPT_SSH_COMPRESSION.3
@@ -0,0 +1,58 @@
+.\" **************************************************************************
+.\" * _ _ ____ _
+.\" * Project ___| | | | _ \| |
+.\" * / __| | | | |_) | |
+.\" * | (__| |_| | _ <| |___
+.\" * \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" *
+.\" * This software is licensed as described in the file COPYING, which
+.\" * you should have received as part of this distribution. The terms
+.\" * are also available at https://curl.haxx.se/docs/copyright.html.
+.\" *
+.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+.\" * copies of the Software, and permit persons to whom the Software is
+.\" * furnished to do so, under the terms of the COPYING file.
+.\" *
+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+.\" * KIND, either express or implied.
+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLOPT_SSH_COMPRESSION 3 "05 Aug 2017" "libcurl 7.56.0" "curl_easy_setopt options"
+.SH NAME
+CURLOPT_SSH_COMPRESSION \- enables automatic decompression of HTTP downloads
+.SH SYNOPSIS
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_COMPRESSION, long enable);
+.SH DESCRIPTION
+Pass a long as parameter to enable or disable.
+
+Enables built-in SSH compression.
+This is a request, not an order; the server may or may not do it.
+.SH DEFAULT
+
+.SH PROTOCOLS
+All SSH based protocols: SCP, SFTP
+.SH EXAMPLE
+.nf
+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);
+}
+.fi
+.SH AVAILABILITY
+Added in 7.56.0
+.SH 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.
+.SH "SEE ALSO"
+.BR CURLOPT_ACCEPT_ENCODING "(3), " CURLOPT_TRANSFER_ENCODING "(3), "
diff --git a/docs/libcurl/opts/Makefile.inc b/docs/libcurl/opts/Makefile.inc
index c3db5d225..ad09dce2d 100644
--- a/docs/libcurl/opts/Makefile.inc
+++ b/docs/libcurl/opts/Makefile.inc
@@ -258,6 +258,7 @@ man_MANS = \
CURLOPT_SOCKS5_GSSAPI_NEC.3 \
CURLOPT_SOCKS5_GSSAPI_SERVICE.3 \
CURLOPT_SSH_AUTH_TYPES.3 \
+ CURLOPT_SSH_COMPRESSION.3 \
CURLOPT_SSH_HOST_PUBLIC_KEY_MD5.3 \
CURLOPT_SSH_KEYDATA.3 \
CURLOPT_SSH_KEYFUNCTION.3 \