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libssh2/docs/libssh2_session_methods.md
Viktor Szakats b889b39945 docs: convert man page sources to "curldown" format
To render in Git webviews as-is, to make it easier to edit, verify,
and to sync up with curl.

- add options to not build the `.3` man pages:
  - autotools: `--disable-docs`
  - cmake: `LIBSSH2_BUILD_DOCS=OFF`
- building `.3` man pages requires Perl after this patch.
- drop `mansyntax` and the shell / `grep` / GNU `man` tool requirements with it.
- scripts and most logic were copied from curl.
- add `cd2nroff` from curl, with edits to relax curl-specific checks.
- used `nroff2cd` (from curl) to convert from `.3` to `.md`. Then
  manually fixed copyrights, inline function references and a couple
  of other things.

Credits-to: Daniel Stenberg

Ref: eefcc1bda4
Ref: https://github.com/curl/curl/pull/12730
Ref: https://github.com/libssh2/www/issues/25#issuecomment-3289431671

Closes #1660
2025-10-09 04:05:38 +02:00

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1.1 KiB
Markdown

---
c: Copyright (C) The libssh2 project and its contributors.
SPDX-License-Identifier: BSD-3-Clause
Title: libssh2_session_methods
Section: 3
Source: libssh2
See-also:
- libssh2_session_init_ex(3)
---
# NAME
libssh2_session_methods - return the currently active algorithms
# SYNOPSIS
~~~c
#include <libssh2.h>
const char *
libssh2_session_methods(LIBSSH2_SESSION *session, int method_type);
~~~
# DESCRIPTION
*session* - Session instance as returned by libssh2_session_init_ex(3)
*method_type* - one of the method type constants: LIBSSH2_METHOD_KEX,
LIBSSH2_METHOD_HOSTKEY, LIBSSH2_METHOD_CRYPT_CS, LIBSSH2_METHOD_CRYPT_SC,
LIBSSH2_METHOD_MAC_CS, LIBSSH2_METHOD_MAC_SC, LIBSSH2_METHOD_COMP_CS,
LIBSSH2_METHOD_COMP_SC, LIBSSH2_METHOD_LANG_CS, LIBSSH2_METHOD_LANG_SC,
LIBSSH2_METHOD_SIGN_ALGO.
Returns the actual method negotiated for a particular transport parameter.
# RETURN VALUE
Negotiated method or NULL if the session has not yet been started.
# ERRORS
*LIBSSH2_ERROR_INVAL* - The requested method type was invalid.
*LIBSSH2_ERROR_METHOD_NONE* - no method has been set