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https://github.com/libssh2/libssh2.git
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c0f69548be
Add new `libssh2_session_callback_set2()` API that deprecates `libssh2_session_callback_set()`. The new implementation offers the same functionality, but accepts and returns a generic function pointer (of type `libssh2_cb_generic *`), as opposed to the old function that used data pointers (`void *`). The new solution thus avoids data to function (and vice versa) pointer conversions, which has undefined behaviour in standard C. About the name: It seems the `*2` suffix was used in the past for replacement functions for deprecated ones. Let's stick with that. `*_ex` was preferred for new functions that extend existing ones with new features. Closes #1285
48 lines
1.6 KiB
Groff
48 lines
1.6 KiB
Groff
.\" Copyright (C) The libssh2 project and its contributors.
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.\" SPDX-License-Identifier: BSD-3-Clause
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.TH libssh2_channel_x11_req_ex 3 "1 Jun 2007" "libssh2 0.15" "libssh2"
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.SH NAME
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libssh2_channel_x11_req_ex - request an X11 forwarding channel
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.SH SYNOPSIS
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.nf
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#include <libssh2.h>
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int
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libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel, int single_connection,
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const char *auth_proto, const char *auth_cookie,
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int screen_number);
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int
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libssh2_channel_x11_req(LIBSSH2_CHANNEL *channel,
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int screen_number);
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.fi
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.SH DESCRIPTION
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\fIchannel\fP - Previously opened channel instance such as returned by
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.BR libssh2_channel_open_ex(3)
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\fIsingle_connection\fP - non-zero to only forward a single connection.
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\fIauth_proto\fP - X11 authentication protocol to use
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\fIauth_cookie\fP - the cookie (hexadecimal encoded).
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\fIscreen_number\fP - the XLL screen to forward
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Request an X11 forwarding on \fIchannel\fP. To use X11 forwarding,
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.BR libssh2_session_callback_set2(3)
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must first be called to set \fBLIBSSH2_CALLBACK_X11\fP. This callback will be
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invoked when the remote host accepts the X11 forwarding.
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.SH RETURN VALUE
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Return 0 on success or negative on failure. It returns
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LIBSSH2_ERROR_EAGAIN when it would otherwise block. While
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LIBSSH2_ERROR_EAGAIN is a negative number, it is not really a failure per se.
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.SH ERRORS
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\fILIBSSH2_ERROR_ALLOC\fP - An internal memory allocation call failed.
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\fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
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\fILIBSSH2_ERROR_CHANNEL_REQUEST_DENIED\fP -
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.SH SEE ALSO
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.BR libssh2_channel_open_ex(3)
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.BR libssh2_session_callback_set2(3)
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