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

81 lines
1.9 KiB
C

#ifndef _ENDIAN_H
#define _ENDIAN_H
#include <features.h>
#define __NEED_uint16_t
#define __NEED_uint32_t
#define __NEED_uint64_t
#include <bits/alltypes.h>
#define __PDP_ENDIAN 3412
#define BIG_ENDIAN __BIG_ENDIAN
#define LITTLE_ENDIAN __LITTLE_ENDIAN
#define PDP_ENDIAN __PDP_ENDIAN
#define BYTE_ORDER __BYTE_ORDER
static __inline uint16_t __bswap16(uint16_t __x)
{
return __x<<8 | __x>>8;
}
static __inline uint32_t __bswap32(uint32_t __x)
{
return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
}
static __inline uint64_t __bswap64(uint64_t __x)
{
return __bswap32(__x)+0ULL<<32 | __bswap32(__x>>32);
}
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define htobe16(x) __bswap16(x)
#define be16toh(x) __bswap16(x)
#define htobe32(x) __bswap32(x)
#define be32toh(x) __bswap32(x)
#define htobe64(x) __bswap64(x)
#define be64toh(x) __bswap64(x)
#define htole16(x) (uint16_t)(x)
#define le16toh(x) (uint16_t)(x)
#define htole32(x) (uint32_t)(x)
#define le32toh(x) (uint32_t)(x)
#define htole64(x) (uint64_t)(x)
#define le64toh(x) (uint64_t)(x)
#else
#define htobe16(x) (uint16_t)(x)
#define be16toh(x) (uint16_t)(x)
#define htobe32(x) (uint32_t)(x)
#define be32toh(x) (uint32_t)(x)
#define htobe64(x) (uint64_t)(x)
#define be64toh(x) (uint64_t)(x)
#define htole16(x) __bswap16(x)
#define le16toh(x) __bswap16(x)
#define htole32(x) __bswap32(x)
#define le32toh(x) __bswap32(x)
#define htole64(x) __bswap64(x)
#define le64toh(x) __bswap64(x)
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define betoh16(x) __bswap16(x)
#define betoh32(x) __bswap32(x)
#define betoh64(x) __bswap64(x)
#define letoh16(x) (uint16_t)(x)
#define letoh32(x) (uint32_t)(x)
#define letoh64(x) (uint64_t)(x)
#else
#define betoh16(x) (uint16_t)(x)
#define betoh32(x) (uint32_t)(x)
#define betoh64(x) (uint64_t)(x)
#define letoh16(x) __bswap16(x)
#define letoh32(x) __bswap32(x)
#define letoh64(x) __bswap64(x)
#endif
#endif
#endif