common/features: if EXPERIMENTAL_FEATURES, advertise `option_static_remotekey`

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

common/features.c

@@ -10,7 +10,8 @@ static const u32 our_localfeatures[] = {
 	OPTIONAL_FEATURE(LOCAL_UPFRONT_SHUTDOWN_SCRIPT),
 	OPTIONAL_FEATURE(LOCAL_GOSSIP_QUERIES),
 #if EXPERIMENTAL_FEATURES
-	OPTIONAL_FEATURE(LOCAL_GOSSIP_QUERIES_EX)
+	OPTIONAL_FEATURE(LOCAL_GOSSIP_QUERIES_EX),
+	OPTIONAL_FEATURE(LOCAL_STATIC_REMOTEKEY),
 #endif
 };
 

common/features.h

@@ -25,7 +25,7 @@ const char **list_supported_features(const tal_t *ctx);
 bool feature_is_set(const u8 *features, size_t bit);
 void set_feature_bit(u8 **ptr, u32 bit);
 
-/* BOLT #9:
+/* BOLT-930a9b44076a8f25a8626b31b3d5a55c0888308c #9:
  *
  * Flags are numbered from the least-significant bit, at bit 0 (i.e. 0x1,
  * an _even_ bit). They are generally assigned in pairs so that features
@@ -36,7 +36,7 @@ void set_feature_bit(u8 **ptr, u32 bit);
 #define COMPULSORY_FEATURE(x)	((x) & 0xFFFFFFFE)
 #define OPTIONAL_FEATURE(x)	((x) | 1)
 
-/* BOLT #9:
+/* BOLT-930a9b44076a8f25a8626b31b3d5a55c0888308c #9:
  *
  * ## Assigned `localfeatures` flags
  *...
@@ -45,11 +45,13 @@ void set_feature_bit(u8 **ptr, u32 bit);
  * | 3    | `initial_routing_sync`           |...
  * | 4/5  | `option_upfront_shutdown_script` |...
  * | 6/7  | `gossip_queries`                 |...
+ * | 48/49| `option_static_remotekey`        |...
  */
 #define LOCAL_DATA_LOSS_PROTECT			0
 #define LOCAL_INITIAL_ROUTING_SYNC		2
 #define LOCAL_UPFRONT_SHUTDOWN_SCRIPT		4
 #define LOCAL_GOSSIP_QUERIES			6
+#define LOCAL_STATIC_REMOTEKEY			48
 
 /* BOLT-927c96daab2338b716708a57cd75c84a2d169e0e #9:
  * | Bits  | Name                            |...

tests/test_connection.py

@@ -1345,7 +1345,7 @@ def test_peerinfo(node_factory, bitcoind):
     l1, l2 = node_factory.line_graph(2, fundchannel=False, opts={'may_reconnect': True})
     lfeatures = 'aa'
     if EXPERIMENTAL_FEATURES:
-        lfeatures = '08aa'
+        lfeatures = '020000000008aa'
     # Gossiping but no node announcement yet
     assert l1.rpc.getpeer(l2.info['id'])['connected']
     assert len(l1.rpc.getpeer(l2.info['id'])['channels']) == 0
@@ -1596,16 +1596,18 @@ def test_dataloss_protection(node_factory, bitcoind):
                                feerates=(7500, 7500, 7500), allow_broken_log=True)
 
     if EXPERIMENTAL_FEATURES:
-        # lflen == 2, features 1, 3, 5, 7 and 11 (0x08aa).
-        lf = "0002" + "08aa"
+        # features 1, 3, 5, 7, 11 and 49 (0x020000000008aa).
+        lf = "020000000008aa"
     else:
-        # lflen == 1, features 1, 3, 5 and 7 (0xaa).
-        lf = "0001" + "aa"
+        # features 1, 3, 5 and 7 (0xaa).
+        lf = "aa"
     l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
     # l1 should send out WIRE_INIT (0010)
     l1.daemon.wait_for_log(r"\[OUT\] 0010"
                            # gflen == 0
                            "0000"
+                           # lflen
+                           + format(len(lf) // 2, '04x')
                            + lf)
 
     l1.fund_channel(l2, 10**6)