#ifndef _FRIEND_H
#define _FRIEND_H
+#include <stdlib.h>
+
+int sock_init(void);
+
struct friend;
struct cache;
int create_cache(struct cache **cache);
int load_cache(struct cache *cache, char *fname);
int store_cache(struct cache *cache, char *fname);
+int friend_send_message(struct friend *friend, char *buffer, size_t len);
+
#endif