add target workaround

[p2pool.git] / p2pool / node.py

diff --git a/p2pool/node.py b/p2pool/node.py
index ef60fb1..85b501b 100644 (file)
--- a/p2pool/node.py
+++ b/p2pool/node.py
@@ -32,7 +32,7 @@ class P2PNode(p2p.Node):
             
             new_count += 1
             
-            #print 'Received share %s from %r' % (p2pool_data.format_hash(share.hash), share.peer.addr if share.peer is not None else None)
+            #print 'Received share %s from %r' % (p2pool_data.format_hash(share.hash), share.peer_addr)
             
             self.node.tracker.add(share)
         
@@ -67,7 +67,8 @@ class P2PNode(p2p.Node):
                 if share.hash in stops:
                     break
                 shares.append(share)
-        print 'Sending %i shares to %s:%i' % (len(shares), peer.addr[0], peer.addr[1])
+        if len(shares) > 0:
+            print 'Sending %i shares to %s:%i' % (len(shares), peer.addr[0], peer.addr[1])
         return shares
     
     def handle_bestblock(self, header, peer):
@@ -75,7 +76,6 @@ class P2PNode(p2p.Node):
             raise p2p.PeerMisbehavingError('received block header fails PoW test')
         self.node.handle_header(header)
     
-    @defer.inlineCallbacks
     def broadcast_share(self, share_hash):
         shares = []
         for share in self.node.tracker.get_chain(share_hash, min(5, self.node.tracker.get_height(share_hash))):
@@ -84,8 +84,8 @@ class P2PNode(p2p.Node):
             self.shared_share_hashes.add(share.hash)
             shares.append(share)
         
-        for peer in list(self.peers.itervalues()):
-            yield peer.sendShares([share for share in shares if share.peer is not peer], self.node.tracker, self.node.known_txs_var.value, include_txs_with=[share_hash])
+        for peer in self.peers.itervalues():
+            peer.sendShares([share for share in shares if share.peer_addr != peer.addr], self.node.tracker, self.node.known_txs_var.value, include_txs_with=[share_hash])
     
     def start(self):
         p2p.Node.start(self)
@@ -98,7 +98,7 @@ class P2PNode(p2p.Node):
         def download_shares():
             while True:
                 desired = yield self.node.desired_var.get_when_satisfies(lambda val: len(val) != 0)
-                peer2, share_hash = random.choice(desired)
+                peer_addr, share_hash = random.choice(desired)
                 
                 if len(self.peers) == 0:
                     yield deferral.sleep(1)
@@ -109,9 +109,14 @@ class P2PNode(p2p.Node):
                 try:
                     shares = yield peer.get_shares(
                         hashes=[share_hash],
-                        parents=500,
-                        stops=[],
+                        parents=random.randrange(500), # randomize parents so that we eventually get past a too large block of shares
+                        stops=list(set(self.node.tracker.heads) | set(
+                            self.node.tracker.get_nth_parent_hash(head, min(max(0, self.node.tracker.get_height_and_last(head)[0] - 1), 10)) for head in self.node.tracker.heads
+                        ))[:100],
                     )
+                except defer.TimeoutError:
+                    print 'Share request timed out!'
+                    continue
                 except:
                     log.err(None, 'in download_shares:')
                     continue
@@ -176,24 +181,38 @@ class Node(object):
                     self.bitcoind_work.set((yield helper.getwork(self.bitcoind, self.bitcoind_work.value['use_getblocktemplate'])))
                 except:
                     log.err()
-                yield defer.DeferredList([flag, deferral.sleep(15)], fireOnOneCallback=True)
+                yield defer.DeferredList([flag, deferral.sleep(5)], fireOnOneCallback=True)
         work_poller()
         
         # PEER WORK
         
         self.best_block_header = variable.Variable(None)
+
+        self.pow_bits = variable.Variable(None)
+        self.pow_subsidy = 0
+        self.last_block_time = 0
+
         def handle_header(new_header):
+            self.pow_bits = self.bitcoind_work.value['bits']
+            self.pow_subsidy = self.bitcoind_work.value['subsidy']
+            self.last_block_time = self.bitcoind_work.value['time']
+
             # check that header matches current target
+            #
+            # TODO: PoS (stake-modifier & modifier-checksum) checkings implementation
+            #
             if not (self.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(new_header)) <= self.bitcoind_work.value['bits'].target):
                 return
+
             bitcoind_best_block = self.bitcoind_work.value['previous_block']
+
             if (self.best_block_header.value is None
                 or (
                     new_header['previous_block'] == bitcoind_best_block and
-                    bitcoin_data.hash256(bitcoin_data.block_header_type.pack(self.best_block_header.value)) == bitcoind_best_block
+                    self.net.PARENT.BLOCKHASH_FUNC(bitcoin_data.block_header_type.pack(self.best_block_header.value)) == bitcoind_best_block
                 ) # new is child of current and previous is current
                 or (
-                    bitcoin_data.hash256(bitcoin_data.block_header_type.pack(new_header)) == bitcoind_best_block and
+                    self.net.PARENT.BLOCKHASH_FUNC(bitcoin_data.block_header_type.pack(new_header)) == bitcoind_best_block and
                     self.best_block_header.value['previous_block'] != bitcoind_best_block
                 )): # new is current and previous is not a child of current
                 self.best_block_header.set(new_header)
@@ -247,9 +266,11 @@ class Node(object):
         
         @self.tracker.verified.added.watch
         def _(share):
+            if share.timestamp < share.min_header['timestamp']:
+                return
             if not (share.pow_hash <= share.header['bits'].target):
                 return
-            
+
             block = share.as_block(self.tracker, self.known_txs_var.value)
             if block is None:
                 print >>sys.stderr, 'GOT INCOMPLETE BLOCK FROM PEER! %s bitcoin: %s%064x' % (p2pool_data.format_hash(share.hash), self.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, share.header_hash)