Andrea Maria Piana e65760ca85 Add basic peersyncing
This commit adds basic syncing capabilities with peers if they are both
online.

It updates the work done on MVDS, but I decided to create the code in
status-go instead, since it's very tight to the application (similarly
the code that was the inspiration for mvds, bramble, is all tight
together at the database level).

I reused parts of the protobufs.

The flow is:

1) An OFFER message is sent periodically with a bunch of message-ids and
   group-ids.
2) Anyone can REQUEST some of those messages if not present in their
   database.

3) The peer will then send over those messages.

It's disabled by default, but I am planning to add a way to set up the
flags.
2024-01-23 12:46:17 +00:00

54 lines
937 B
C

#ifndef _SYS_MSG_H
#define _SYS_MSG_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/ipc.h>
#define __NEED_pid_t
#define __NEED_key_t
#define __NEED_time_t
#define __NEED_size_t
#define __NEED_ssize_t
#include <bits/alltypes.h>
typedef unsigned long msgqnum_t;
typedef unsigned long msglen_t;
#include <bits/msg.h>
#define __msg_cbytes msg_cbytes
#define MSG_NOERROR 010000
#define MSG_EXCEPT 020000
#define MSG_STAT (11 | (IPC_STAT & 0x100))
#define MSG_INFO 12
#define MSG_STAT_ANY (13 | (IPC_STAT & 0x100))
struct msginfo {
int msgpool, msgmap, msgmax, msgmnb, msgmni, msgssz, msgtql;
unsigned short msgseg;
};
int msgctl (int, int, struct msqid_ds *);
int msgget (key_t, int);
ssize_t msgrcv (int, void *, size_t, long, int);
int msgsnd (int, const void *, size_t, int);
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
struct msgbuf {
long mtype;
char mtext[1];
};
#endif
#ifdef __cplusplus
}
#endif
#endif