#ifndef DDOSPROOF_H
#define DDOSPROOF_H

#define DDOSCODE_COOKIEOK	200	// The cookie is valid, the request may proceed further
#define DDOSCODE_GOTOWORK	201	// The client must perform some work
#define DDOSCODE_GOODWORK	202	// THe proof of work is valid, here is a cookie for later
#define DDOSCODE_OK		203	// THe proof of work is valid, here is a cookie for later
#define DDOSCODE_BADIP		500	// This is a banned IP number. Just end the connection
#define DDOSCODE_INTERNAL	501	// Internal error. Just end the connection
#define DDOSCODE_BADPROOF	502	// Invalid proof of work
#define DDOSCODE_INVALID	503	// Invalid parameter


void util_filltb0();
bool util_validate (const char *answer, int difficulty);
int util_makecookie (int fd, const string &secret, const char *ip, char tmp[100]);
bool util_validcookie (const char *cookie, const char *ip, const string &secret);
int util_getwork (int fd, char res[100]);
bool util_validwork (const char *answer, int difficulty);

#endif