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chaintopology: make sure we have a tip before continuing.

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We can't service peers until we have some chain topology.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2016-08-09 13:11:22 +09:30
parent 441d598dca
commit 35f83841da
1 changed files with 8 additions and 3 deletions
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11
daemon/chaintopology.c
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@ -10,6 +10,7 @@
#include "watch.h"
#include <ccan/array_size/array_size.h>
#include <ccan/asort/asort.h>
#include <ccan/io/io.h>
#include <ccan/structeq/structeq.h>
struct block {
@ -381,7 +382,7 @@ static void check_chaintip(struct lightningd_state *dstate,
struct topology *topo = dstate->topology;
/* 0 is the main tip. */
if (!topo->tip || !structeq(tipid, &topo->tip->blkid))
if (!structeq(tipid, &topo->tip->blkid))
bitcoind_getrawblock(dstate, tipid, gather_blocks,
(struct block *)NULL);
else
@ -397,7 +398,7 @@ static void start_poll_chaintip(struct lightningd_state *dstate)
next_topology_timer(dstate);
} else
bitcoind_get_chaintip(dstate, check_chaintip, NULL);
}
}
static void init_topo(struct lightningd_state *dstate,
struct bitcoin_block *blk,
@ -408,9 +409,11 @@ static void init_topo(struct lightningd_state *dstate,
topo->root = new_block(dstate, blk, NULL);
topo->root->height = ptr2int(p);
block_map_add(&topo->block_map, topo->root);
topo->tip = topo->root;
/* Now grab chaintip immediately. */
bitcoind_get_chaintip(dstate, check_chaintip, NULL);
io_break(dstate);
}
static void get_init_block(struct lightningd_state *dstate,
@ -460,8 +463,10 @@ u32 get_block_height(struct lightningd_state *dstate)
void setup_topology(struct lightningd_state *dstate)
{
dstate->topology = tal(dstate, struct topology);
dstate->topology->tip = NULL;
block_map_init(&dstate->topology->block_map);
bitcoind_getblockcount(dstate, get_init_blockhash, NULL);
/* Once it gets first block, it calls io_break() and we return. */
io_loop(NULL, NULL);
}