man3/libssh2_channel_open_ex.3

   1 .\" $Id: libssh2_channel_open_ex.3,v 1.1 2007/06/13 20:54:25 jehousley Exp $
   2 .\"
   3 .TH libssh2_channel_open_ex 3 "1 Jun 2007" "libssh2 0.15" "libssh2 manual"
   4 .SH NAME
   5 libssh2_channel_open_ex - establish a generic session channel
   6 .SH SYNOPSIS
   7 #include <libssh2.h>
   8
   9 LIBSSH2_CHANNEL *
  10 libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *channel_type, unsigned int channel_type_len, unsigned int window_size, unsigned int packet_size, const char *message, unsigned int message_len);
  11
  12 LIBSSH2_CHANNEL *
  13 libssh2_channel_open_session(session);
  14
  15 .SH DESCRIPTION
  16 \fIsession\fP - Session instance as returned by
  17 .BR libssh2_session_init(3)
  18
  19 \fIchannel_type\fP - Channel type to open. Typically one of session,
  20 direct-tcpip, or tcpip-forward. The SSH2 protocol allowed for additional
  21 types including local, custom channel types.
  22
  23 \fIchannel_type_len\fP - Length of channel_type
  24
  25 \fIwindow_size\fP - Maximum amount of unacknowledged data remote host is
  26 allowed to send before receiving an SSH_MSG_CHANNEL_WINDOW_ADJUST packet.
  27
  28 \fIpacket_size\fP - Maximum number of bytes remote host is allowed to send
  29 in a single SSH_MSG_CHANNEL_DATA or SSG_MSG_CHANNEL_EXTENDED_DATA packet.
  30
  31 \fImessage\fP - Additional data as required by the selected channel_type.
  32
  33 \fImessage_len\fP - Length of message parameter.
  34
  35 Allocate a new channel for exchanging data with the server. This method is
  36 typically called through its macroized form:
  37 .BR libssh2_channel_open_session(3)
  38 or via
  39 .BR libssh2_channel_direct_tcpip(3)
  40 or
  41 .BR libssh2_channel_forward_listen(3)
  42
  43 .SH RETURN VALUE
  44 Pointer to a newly allocated LIBSSH2_CHANNEL instance, or NULL on errors.
  45
  46 .SH ERRORS
  47 \fILIBSSH2_ERROR_ALLOC\fP -  An internal memory allocation call failed.
  48
  49 \fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
  50
  51 \fILIBSSH2_ERROR_CHANNEL_FAILURE\fP -
  52
  53 \fILIBSSH2_ERROR_EAGAIN\fP - Marked for non-blocking I/O but the call would block.
  54
  55 .SH SEE ALSO
  56 Add related functions