jsonrpc: Add aliases to listpeers result

.msggen.json

@@ -669,6 +669,7 @@
             "ListPeers.peers[].netaddr[]": 5
         },
         "ListpeersPeersChannels": {
+            "ListPeers.peers[].channels[].alias": 50,
             "ListPeers.peers[].channels[].channel_id": 6,
             "ListPeers.peers[].channels[].close_to": 14,
             "ListPeers.peers[].channels[].close_to_addr": 47,
@@ -719,6 +720,10 @@
             "ListPeers.peers[].channels[].to_us_msat": 20,
             "ListPeers.peers[].channels[].total_msat": 23
         },
+        "ListpeersPeersChannelsAlias": {
+            "ListPeers.peers[].channels[].alias.local": 1,
+            "ListPeers.peers[].channels[].alias.remote": 2
+        },
         "ListpeersPeersChannelsFeerate": {
             "ListPeers.peers[].channels[].feerate.perkb": 2,
             "ListPeers.peers[].channels[].feerate.perkw": 1

cln-grpc/proto/node.proto

@@ -234,6 +234,11 @@ message ListpeersPeersChannelsFunding {
 	Amount pushed_msat = 3;
 }
 
+message ListpeersPeersChannelsAlias {
+	optional string local = 1;
+	optional string remote = 2;
+}
+
 message ListpeersPeersChannelsHtlcs {
 	// ListPeers.peers[].channels[].htlcs[].direction
 	enum ListpeersPeersChannelsHtlcsDirection {

cln-rpc/src/model.rs

@@ -1071,6 +1071,14 @@ pub mod responses {
 	    pub pushed_msat: Amount,
 	}
 
+	#[derive(Clone, Debug, Deserialize, Serialize)]
+	pub struct ListpeersPeersChannelsAlias {
+	    #[serde(alias = "local", skip_serializing_if = "Option::is_none")]
+	    pub local: Option<ShortChannelId>,
+	    #[serde(alias = "remote", skip_serializing_if = "Option::is_none")]
+	    pub remote: Option<ShortChannelId>,
+	}
+
 	#[derive(Clone, Debug, Deserialize, Serialize)]
 	pub struct ListpeersPeersChannelsState_changes {
 	    #[serde(alias = "timestamp")]

doc/lightning-listpeers.7.md

@@ -92,6 +92,9 @@ On success, an object containing **peers** is returned.  It is an array of objec
   - **their_to_self_delay** (u32, optional): the number of blocks before they can take their funds if they unilateral close
   - **our_to_self_delay** (u32, optional): the number of blocks before we can take our funds if we unilateral close
   - **max_accepted_htlcs** (u32, optional): Maximum number of incoming HTLC we will accept at once
+  - **alias** (object, optional):
+    - **local** (short_channel_id, optional): An alias assigned by this node to this channel, used for outgoing payments
+    - **remote** (short_channel_id, optional): An alias assigned by the remote node to this channel, usable in routehints and invoices
   - **state_changes** (array of objects, optional): Prior state changes:
     - **timestamp** (string): UTC timestamp of form YYYY-mm-ddTHH:MM:SS.%03dZ
     - **old_state** (string): Previous state (one of "OPENINGD", "CHANNELD_AWAITING_LOCKIN", "CHANNELD_NORMAL", "CHANNELD_SHUTTING_DOWN", "CLOSINGD_SIGEXCHANGE", "CLOSINGD_COMPLETE", "AWAITING_UNILATERAL", "FUNDING_SPEND_SEEN", "ONCHAIN", "DUALOPEND_OPEN_INIT", "DUALOPEND_AWAITING_LOCKIN")
@@ -381,4 +384,4 @@ Main web site: <https://github.com/ElementsProject/lightning> Lightning
 RFC site (BOLT \#9):
 <https://github.com/lightningnetwork/lightning-rfc/blob/master/09-features.md>
 
-[comment]: # ( SHA256STAMP:2e8bcc66531b2dce44b94c42852b624bdd9435cc63495fc799458fa5522f0ea9)
+[comment]: # ( SHA256STAMP:fcfc465cbbe95430f4fc6473099142c576883e333ef9fe31d04372f411e49f6d)

doc/schemas/listpeers.schema.json

@@ -461,6 +461,20 @@
                 "htlc_minimum_msat": {
                   "deprecated": true
                 },
+                "alias": {
+                  "type": "object",
+                  "required": [],
+                  "properties": {
+                    "local": {
+                      "type": "short_channel_id",
+                      "description": "An alias assigned by this node to this channel, used for outgoing payments"
+                    },
+                    "remote": {
+                      "type": "short_channel_id",
+                      "description": "An alias assigned by the remote node to this channel, usable in routehints and invoices"
+                    }
+                  }
+                },
                 "state_changes": {
                   "type": "array",
                   "description": "Prior state changes",
@@ -664,6 +678,7 @@
                             "payment_hash": {},
                             "local_trimmed": {},
                             "status": {},
+                            "alias": {},
                             "state": {
                               "type": "string",
                               "enum": [
@@ -751,6 +766,7 @@
                       "funding_outnum": {},
                       "close_to": {},
                       "private": {},
+                      "alias": {},
                       "opener": {},
                       "closer": {},
                       "features": {},
@@ -827,6 +843,7 @@
                     ],
                     "properties": {
                       "state": {},
+                      "alias": {},
                       "scratch_txid": {},
                       "feerate": {},
                       "owner": {},
@@ -911,6 +928,7 @@
                       "direction"
                     ],
                     "properties": {
+                      "alias": {},
                       "state": {},
                       "scratch_txid": {},
                       "feerate": {},
@@ -1002,6 +1020,7 @@
                       "scratch_txid": {},
                       "feerate": {},
                       "owner": {},
+                      "alias": {},
                       "short_channel_id": {},
                       "channel_id": {},
                       "funding_txid": {},

lightningd/peer_control.c

@@ -744,6 +744,17 @@ static void json_add_channel(struct lightningd *ld,
 		json_add_string(response, "closer", channel->closer == LOCAL ?
 						    "local" : "remote");
 
+	if (channel->alias[LOCAL] || channel->alias[REMOTE]) {
+		json_object_start(response, "alias");
+		if (channel->alias[LOCAL])
+			json_add_short_channel_id(response, "local",
+						  channel->alias[LOCAL]);
+		if (channel->alias[REMOTE])
+			json_add_short_channel_id(response, "remote",
+						  channel->alias[REMOTE]);
+		json_object_end(response);
+	}
+
 	json_array_start(response, "features");
 	if (channel_has(channel, OPT_STATIC_REMOTEKEY))
 		json_add_string(response, NULL, "option_static_remotekey");