extern Socket ssh_connection_sharing_init(const char *host, int port,
Conf *conf, Ssh ssh, void **state);
+int ssh_share_test_for_upstream(const char *host, int port, Conf *conf);
void share_got_pkt_from_server(void *ctx, int type,
unsigned char *pkt, int pktlen);
void share_activate(void *state, const char *server_verstring);