1#ifndef SIDEBAND_H2#define SIDEBAND_H34#define SIDEBAND_PROTOCOL_ERROR -25#define SIDEBAND_REMOTE_ERROR -167int recv_sideband(const char *me, int in_stream, int out);8ssize_t send_sideband(int fd, int band, const char *data, ssize_t sz, int packet_max);910#endif