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59 lines
2.0 KiB
Groff
59 lines
2.0 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_open_ex 3 "1 Jun 2007" "libssh2 0.15" "libssh2"
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.SH NAME
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libssh2_channel_open_ex - establish a generic session channel
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.SH SYNOPSIS
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.nf
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#include <libssh2.h>
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LIBSSH2_CHANNEL *
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libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *channel_type,
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unsigned int channel_type_len,
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unsigned int window_size,
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unsigned int packet_size,
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const char *message, unsigned int message_len);
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LIBSSH2_CHANNEL *
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libssh2_channel_open_session(session);
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.fi
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.SH DESCRIPTION
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\fIsession\fP - Session instance as returned by
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.BR libssh2_session_init_ex(3)
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\fIchannel_type\fP - Channel type to open. Typically one of session,
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direct-tcpip, or tcpip-forward. The SSH2 protocol allowed for additional
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types including local, custom channel types.
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\fIchannel_type_len\fP - Length of channel_type
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\fIwindow_size\fP - Maximum amount of unacknowledged data remote host is
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allowed to send before receiving an SSH_MSG_CHANNEL_WINDOW_ADJUST packet.
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\fIpacket_size\fP - Maximum number of bytes remote host is allowed to send
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in a single SSH_MSG_CHANNEL_DATA or SSG_MSG_CHANNEL_EXTENDED_DATA packet.
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\fImessage\fP - Additional data as required by the selected channel_type.
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\fImessage_len\fP - Length of message parameter.
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Allocate a new channel for exchanging data with the server. This method is
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typically called through its macroized form:
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.BR libssh2_channel_open_session(3)
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or via
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.BR libssh2_channel_direct_tcpip(3)
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or
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.BR libssh2_channel_forward_listen(3)
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.SH RETURN VALUE
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Pointer to a newly allocated LIBSSH2_CHANNEL instance, or NULL on errors.
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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_FAILURE\fP -
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\fILIBSSH2_ERROR_EAGAIN\fP - Marked for non-blocking I/O but the call would block.
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.SH SEE ALSO
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Add related functions
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