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#pragma once
#include "routing.h"
#include <sys/socket.h>
#include <arpa/inet.h>
// 192.0.2.0
#define UNDEF_ADDR (struct in_addr){0xC0000200}
#define MAX_DISC 32
#define MAX_INFLIGHT 32
#define PROTO_UNCTM 60
#define PROTO_TMOUT 5
struct ping {
struct nodeid remote_id;
int attempt;
bool is_new;
};
union message_cont {
struct ping ping;
};
struct dht;
struct msgbuff;
#define PROCESS_REPONSE(NAME) int (NAME)(struct dht* dht, time_t now, union message_cont* cont, char* packet, size_t packet_len, int socket, struct sockaddr* remote, socklen_t remote_len, struct msgbuff* msgbuff)
typedef PROCESS_REPONSE(resp);
#define PROCESS_TIMEOUT(NAME) int (NAME)(struct dht* dht, struct nodeid* self, time_t now, union message_cont* cont, struct msgbuff* msgbuff)
typedef PROCESS_TIMEOUT(tmout);
struct dht {
struct nodeid self;
int sfd;
bool pause;
bool reqalloc[MAX_INFLIGHT];
struct {
struct sockaddr_storage addr;
socklen_t addr_len;
resp* fun;
time_t timeout;
tmout* timeout_fun;
union message_cont cont;
} requestdata[MAX_INFLIGHT];
};
// @HACK: This isn't true anymore
// The longest message we can send is probably a response to find_node which
// consists of:
// d1:t <-- 4 bytes
// <tid length> <-- 2 bytes
// : <-- 1 byte
// <tid> <-- 16 bytes*
// 1:y1:r1:r <-- 9 bytes
// d2:id20: <-- 8 bytes
// <our nodeid> <-- 20 bytes
// 5:nodes208: <-- 11 bytes
// <payload> <-- 208 bytes
// ee <-- 2 bytes
// TOTAL 281 bytes
struct message {
<<<<<<< HEAD
char payload[1024];
=======
char payload[281];
>>>>>>> 685b13e (I don't remember)
size_t payload_len;
struct sockaddr_storage dest;
socklen_t dest_len;
};
void proto_begin(struct dht* dht, time_t now, struct message** output, const struct message* const output_end);
int proto_run(struct dht* dht, char* buffer, size_t buffer_len, struct sockaddr_in* remote, socklen_t remote_len, time_t now, struct message** output, const struct message* const output_end);
void proto_end(struct dht* dht);
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