[WIP] Add unpublished flag for transports

src/sql/migrations.rs

@@ -2343,6 +2343,24 @@ ALTER TABLE contacts ADD COLUMN name_normalized TEXT;
         .await?;
     }
 
+    // Add a `published` flag to transports.
+    // Unpublished transports are not advertised to contacts,
+    // and self-sent messages are not sent there.
+    // The default is published, but when updating,
+    // existing secondary transports are set to unpublished,
+    // so that an existing transport address doesn't suddenly get spammed with a lot of messages.
+    inc_and_check(&mut migration_version, 149)?;
+    if dbversion < migration_version {
+        sql.execute_migration(
+            "ALTER TABLE transports ADD COLUMN published INTEGER DEFAULT 1;
+            UPDATE transports SET published=0 WHERE addr!=(
+                SELECT value FROM config WHERE keyname='configured_addr'
+            )",
+            migration_version,
+        )
+        .await?;
+    }
+
     let new_version = sql
         .get_raw_config_int(VERSION_CFG)
         .await?