LIBSSH2_CHANNEL * libssh2_scp_send_ex(LIBSSH2_SESSION *session, const char *path, int mode, size_t size, long mtime, long atime);
path - Full path and filename of file to transfer
mode - File access mode to create file with
size - Size of file being transmitted (Must be known ahead of time precisely)
mtime - mtime to assign to file being created
atime - atime to assign to file being created (Set this and mtime to zero to instruct remote host to use current time).
Send a file to the remote host via SCP.
LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.
LIBSSH2_ERROR_EAGAIN - Marked for non-blocking I/O but the call would block.