libssh2_channel_send_eof - send EOF to remote server
int libssh2_channel_send_eof(LIBSSH2_CHANNEL *channel);
Tell the remote host that no further data will be sent on the specified
channel. Processes typically interpret this as a closed stdin
Return 0 on success or negative on failure. It returns
LIBSSH2_ERROR_EAGAIN when it would otherwise block. While
LIBSSH2_ERROR_EAGAIN is a negative number, it isn’t really a failure
LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.