NAME

       libssh2_channel_write_ex - write data to a channel stream blocking

SYNOPSIS

       #include <libssh2.h>

       ssize_t libssh2_channel_write_ex(LIBSSH2_CHANNEL *channel,
                                        int stream_id, char *buf,
                                        size_t buflen);

DESCRIPTION

       Write  data  to  a  channel  stream.  All  channel streams have one standard I/O substream
       (stream_id == 0), and may have up to 2^32 extended  data  streams  as  identified  by  the
       selected  stream_id. The SSH2 protocol currently defines a stream ID of 1 to be the stderr
       substream.

       channel - active channel stream to write to.

       stream_id - substream ID number (e.g. 0 or SSH_EXTENDED_DATA_STDERR)

       buf - pointer to buffer to write

       buflen - size of the data to write

       libssh2_channel_write(3) and libssh2_channel_write_stderr(3) are  convenience  macros  for
       this function.

       libssh2_channel_write_ex(3)  will  use as much as possible of the buffer and put it into a
       single SSH protocol packet. This means that to get maximum performance when sending larger
       files, you should try to always pass in at least 32K of data to this function.

RETURN VALUE

       Actual number of bytes written or negative on failure.  LIBSSH2_ERROR_EAGAIN when it would
       otherwise block. While LIBSSH2_ERROR_EAGAIN is  a  negative  number,  it  isn't  really  a
       failure per se.

ERRORS

       LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.

       LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.

       LIBSSH2_ERROR_CHANNEL_CLOSED - The channel has been closed.

       LIBSSH2_ERROR_CHANNEL_EOF_SENT - The channel has been requested to be closed.

SEE ALSO

       libssh2_channel_open_ex(3) libssh2_channel_read_ex(3)