[tests] Make NodeConnCB a subclass of NodeConn

This makes NodeConnCB a subclass of NodeConn, and
removes the need for the client code to know
anything about the implementation details of NodeConnCB.

NodeConn can now be swapped out for any other implementation
of a low-level connection without changing client code.

test/functional/p2p-leaktests.py

@@ -30,43 +30,42 @@ class CLazyNode(NodeConnCB):
         self.unexpected_msg = True
         self.log.info("should not have received message: %s" % message.command)
 
-    def on_open(self, conn):
-        self.connected = True
+    def on_open(self):
         self.ever_connected = True
 
-    def on_version(self, conn, message): self.bad_message(message)
-    def on_verack(self, conn, message): self.bad_message(message)
-    def on_reject(self, conn, message): self.bad_message(message)
-    def on_inv(self, conn, message): self.bad_message(message)
-    def on_addr(self, conn, message): self.bad_message(message)
-    def on_getdata(self, conn, message): self.bad_message(message)
-    def on_getblocks(self, conn, message): self.bad_message(message)
-    def on_tx(self, conn, message): self.bad_message(message)
-    def on_block(self, conn, message): self.bad_message(message)
-    def on_getaddr(self, conn, message): self.bad_message(message)
-    def on_headers(self, conn, message): self.bad_message(message)
-    def on_getheaders(self, conn, message): self.bad_message(message)
-    def on_ping(self, conn, message): self.bad_message(message)
-    def on_mempool(self, conn): self.bad_message(message)
-    def on_pong(self, conn, message): self.bad_message(message)
-    def on_feefilter(self, conn, message): self.bad_message(message)
-    def on_sendheaders(self, conn, message): self.bad_message(message)
-    def on_sendcmpct(self, conn, message): self.bad_message(message)
-    def on_cmpctblock(self, conn, message): self.bad_message(message)
-    def on_getblocktxn(self, conn, message): self.bad_message(message)
-    def on_blocktxn(self, conn, message): self.bad_message(message)
+    def on_version(self, message): self.bad_message(message)
+    def on_verack(self, message): self.bad_message(message)
+    def on_reject(self, message): self.bad_message(message)
+    def on_inv(self, message): self.bad_message(message)
+    def on_addr(self, message): self.bad_message(message)
+    def on_getdata(self, message): self.bad_message(message)
+    def on_getblocks(self, message): self.bad_message(message)
+    def on_tx(self, message): self.bad_message(message)
+    def on_block(self, message): self.bad_message(message)
+    def on_getaddr(self, message): self.bad_message(message)
+    def on_headers(self, message): self.bad_message(message)
+    def on_getheaders(self, message): self.bad_message(message)
+    def on_ping(self, message): self.bad_message(message)
+    def on_mempool(self, message): self.bad_message(message)
+    def on_pong(self, message): self.bad_message(message)
+    def on_feefilter(self, message): self.bad_message(message)
+    def on_sendheaders(self, message): self.bad_message(message)
+    def on_sendcmpct(self, message): self.bad_message(message)
+    def on_cmpctblock(self, message): self.bad_message(message)
+    def on_getblocktxn(self, message): self.bad_message(message)
+    def on_blocktxn(self, message): self.bad_message(message)
 
 # Node that never sends a version. We'll use this to send a bunch of messages
 # anyway, and eventually get disconnected.
 class CNodeNoVersionBan(CLazyNode):
     # send a bunch of veracks without sending a message. This should get us disconnected.
     # NOTE: implementation-specific check here. Remove if bitcoind ban behavior changes
-    def on_open(self, conn):
-        super().on_open(conn)
+    def on_open(self):
+        super().on_open()
         for i in range(banscore):
             self.send_message(msg_verack())
 
-    def on_reject(self, conn, message): pass
+    def on_reject(self, message): pass
 
 # Node that never sends a version. This one just sits idle and hopes to receive
 # any message (it shouldn't!)
@@ -80,15 +79,15 @@ class CNodeNoVerackIdle(CLazyNode):
         self.version_received = False
         super().__init__()
 
-    def on_reject(self, conn, message): pass
-    def on_verack(self, conn, message): pass
+    def on_reject(self, message): pass
+    def on_verack(self, message): pass
     # When version is received, don't reply with a verack. Instead, see if the
     # node will give us a message that it shouldn't. This is not an exhaustive
     # list!
-    def on_version(self, conn, message):
+    def on_version(self, message):
         self.version_received = True
-        conn.send_message(msg_ping())
-        conn.send_message(msg_getaddr())
+        self.send_message(msg_ping())
+        self.send_message(msg_getaddr())
 
 class P2PLeakTest(BitcoinTestFramework):
     def set_test_params(self):
@@ -119,11 +118,11 @@ class P2PLeakTest(BitcoinTestFramework):
         time.sleep(5)
 
         #This node should have been banned
-        assert not no_version_bannode.connected
+        assert no_version_bannode.state != "connected"
 
         # These nodes should have been disconnected
-        assert not unsupported_service_bit5_node.connected
-        assert not unsupported_service_bit7_node.connected
+        assert unsupported_service_bit5_node.state != "connected"
+        assert unsupported_service_bit7_node.state != "connected"
 
         self.nodes[0].disconnect_p2ps()