core-lightning/lightningd/netaddr.h
Rusty Russell 474887512d gossipd: rewrite to do the handshake internally.
Now the flow is much simpler from a lightningd POV:

1. If we want to connect to a peer, just send gossipd `gossipctl_reach_peer`.
2. Every new peer, gossipd hands up to lightningd, with global/local features
   and the peer fd and a gossip fd using `gossip_peer_connected`
3. If lightningd doesn't want it, it just hands the peerfd and global/local
   features back to gossipd using `gossipctl_handle_peer`
4. If a peer sends a non-gossip msg (eg `open_channel`) the gossipd sends
   it up using `gossip_peer_nongossip`.
5. If lightningd wants to fund a channel, it simply calls `release_channel`.

Notes:
* There's no more "unique_id": we use the peer id.
* For the moment, we don't ask gossipd when we're told to list peers, so
  connected peers without a channel don't appear in the JSON getpeers API.
* We add a `gossipctl_peer_addrhint` for the moment, so you can connect to
  a specific ip/port, but using other sources is a TODO.
* We now (correctly) only give up on reaching a peer after we exchange init
  messages, which changes the test_disconnect case.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-10-20 18:31:32 +02:00

36 lines
1.1 KiB
C

/* FIXME: We should deprecate this in favor of BOLT7 address descriptor */
#ifndef LIGHTNING_LIGHTNINGD_NETADDR_H
#define LIGHTNING_LIGHTNINGD_NETADDR_H
#include "config.h"
#include <ccan/tal/tal.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <sys/socket.h>
struct addrinfo;
/* This can be extended to support other protocols in future. */
struct netaddr {
int type; /* See socket(2): SOCK_STREAM currently */
int protocol; /* See socket(2): 0 currently */
socklen_t addrlen;
union {
struct sockaddr s;
struct sockaddr_in ipv4;
struct sockaddr_in6 ipv6;
} saddr;
};
/* Get the name for this netaddr. */
char *netaddr_name(const tal_t *ctx, const struct netaddr *a);
/* Create a addrinfo (as wanted by io_connect) for this address. */
void netaddr_to_addrinfo(struct addrinfo *ai, const struct netaddr *a);
bool netaddr_from_fd(int fd, int type, int protocol, struct netaddr *a);
bool netaddr_from_blob(const void *linear, size_t len, struct netaddr *a);
char *netaddr_to_hex(const tal_t *ctx, const struct netaddr *a);
#endif /* LIGHTNING_LIGHTNINGD_NETADDR_H */