void set_out_buffer_size(size_t);
ssize_t roaming_write(int, const void *, size_t, int *);
ssize_t roaming_read(int, void *, size_t, int *);
void set_out_buffer_size(size_t);
ssize_t roaming_write(int, const void *, size_t, int *);
ssize_t roaming_read(int, void *, size_t, int *);