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#include <netdb.h>
#define CONN_VALID 0
#define CONN_ERROR -1
#define CONN_RETRY -2
#define CONN_ABORT -3
struct cnx {
#ifdef USE_TLS
struct tls *tls;
#endif
int sock;
};
extern int tls;
extern int (*iosetup)(void);
extern int (*ioclose)(struct cnx *);
extern int (*ioconnect)(struct cnx *, struct addrinfo *, const char *);
extern void (*ioconnerr)(struct cnx *, const char *, const char *, int);
extern char *(*ioparseurl)(char *);
extern ssize_t (*ioread)(struct cnx *, void *, size_t);
extern ssize_t (*iowrite)(struct cnx *, void *, size_t);
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