lnrpc+rpcserver: return meaningful responses instead of empty

lnrpc/lightning.proto

@@ -643,6 +643,8 @@ message SendCustomMessageRequest {
 }
 
 message SendCustomMessageResponse {
+    // The status of the send operation.
+    string status = 1;
 }
 
 message Utxo {
@@ -1317,6 +1319,8 @@ message ConnectPeerRequest {
     uint64 timeout = 3;
 }
 message ConnectPeerResponse {
+    // The status of the connect operation.
+    string status = 1;
 }
 
 message DisconnectPeerRequest {
@@ -1324,6 +1328,8 @@ message DisconnectPeerRequest {
     string pub_key = 1;
 }
 message DisconnectPeerResponse {
+    // The status of the disconnect operation.
+    string status = 1;
 }
 
 message HTLC {
@@ -3542,6 +3548,8 @@ message NetworkInfo {
 message StopRequest {
 }
 message StopResponse {
+    // The status of the stop operation.
+    string status = 1;
 }
 
 message GraphTopologySubscription {
@@ -4366,9 +4374,13 @@ message DeleteAllPaymentsRequest {
 }
 
 message DeletePaymentResponse {
+    // The status of the delete operation.
+    string status = 1;
 }
 
 message DeleteAllPaymentsResponse {
+    // The status of the delete operation.
+    string status = 1;
 }
 
 message AbandonChannelRequest {
@@ -4385,6 +4397,8 @@ message AbandonChannelRequest {
 }
 
 message AbandonChannelResponse {
+    // The status of the abandon operation.
+    string status = 1;
 }
 
 message DebugLevelRequest {
@@ -4724,12 +4738,15 @@ message RestoreChanBackupRequest {
     }
 }
 message RestoreBackupResponse {
+    // The number of channels successfully restored.
+    uint32 num_restored = 1;
 }
 
 message ChannelBackupSubscription {
 }
 
 message VerifyChanBackupResponse {
+    repeated string chan_points = 1;
 }
 
 message MacaroonPermission {

lnrpc/lightning.swagger.json

@@ -3263,7 +3263,13 @@
       }
     },
     "lnrpcAbandonChannelResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the abandon operation."
+        }
+      }
     },
     "lnrpcAddInvoiceResponse": {
       "type": "object",
@@ -4593,7 +4599,13 @@
       }
     },
     "lnrpcConnectPeerResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the connect operation."
+        }
+      }
     },
     "lnrpcCustomMessage": {
       "type": "object",
@@ -4635,7 +4647,13 @@
       }
     },
     "lnrpcDeleteAllPaymentsResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the delete operation."
+        }
+      }
     },
     "lnrpcDeleteMacaroonIDResponse": {
       "type": "object",
@@ -4647,10 +4665,22 @@
       }
     },
     "lnrpcDeletePaymentResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the delete operation."
+        }
+      }
     },
     "lnrpcDisconnectPeerResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the disconnect operation."
+        }
+      }
     },
     "lnrpcEdgeLocator": {
       "type": "object",
@@ -6922,7 +6952,14 @@
       "description": " - ANCHOR: We resolved an anchor output.\n - INCOMING_HTLC: We are resolving an incoming htlc on chain. This if this htlc is\nclaimed, we swept the incoming htlc with the preimage. If it is timed\nout, our peer swept the timeout path.\n - OUTGOING_HTLC: We are resolving an outgoing htlc on chain. If this htlc is claimed,\nthe remote party swept the htlc with the preimage. If it is timed out,\nwe swept it with the timeout path.\n - COMMIT: We force closed and need to sweep our time locked commitment output."
     },
     "lnrpcRestoreBackupResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "num_restored": {
+          "type": "integer",
+          "format": "int64",
+          "description": "The number of channels successfully restored."
+        }
+      }
     },
     "lnrpcRestoreChanBackupRequest": {
       "type": "object",
@@ -7133,7 +7170,13 @@
       }
     },
     "lnrpcSendCustomMessageResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the send operation."
+        }
+      }
     },
     "lnrpcSendManyRequest": {
       "type": "object",
@@ -7338,7 +7381,13 @@
       "type": "object"
     },
     "lnrpcStopResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "status": {
+          "type": "string",
+          "description": "The status of the stop operation."
+        }
+      }
     },
     "lnrpcStreamAuth": {
       "type": "object",
@@ -7485,7 +7534,15 @@
       }
     },
     "lnrpcVerifyChanBackupResponse": {
-      "type": "object"
+      "type": "object",
+      "properties": {
+        "chan_points": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      }
     },
     "lnrpcVerifyMessageRequest": {
       "type": "object",