Use default host from express

Author: DZakh

codegenerator/cli/npm/envio/src/bindings/Express.res

@@ -27,7 +27,7 @@ type middleware = (req, res, unit => unit) => unit
 
 type server
 
-@send external listen: (app, ~port: int, ~host: string) => server = "listen"
+@send external listen: (app, int) => server = "listen"
 
 // res methods
 @send external sendStatus: (res, int) => unit = "sendStatus"

codegenerator/cli/templates/static/codegen/src/Env.res

@@ -19,9 +19,10 @@ let maxPartitionConcurrency =
   envSafe->EnvSafe.get("ENVIO_MAX_PARTITION_CONCURRENCY", S.int, ~fallback=10)
 let indexingBlockLag = envSafe->EnvSafe.get("ENVIO_INDEXING_BLOCK_LAG", S.option(S.int))
 
+// FIXME: This broke HS grafana dashboard. Should investigate it later. Maybe we should use :: as a default value?
 // We want to be able to set it to 0.0.0.0
 // to allow to passthrough the port from a Docker container
-let serverHost = envSafe->EnvSafe.get("ENVIO_INDEXER_HOST", S.string, ~fallback="localhost")
+// let serverHost = envSafe->EnvSafe.get("ENVIO_INDEXER_HOST", S.string, ~fallback="localhost")
 let serverPort =
   envSafe->EnvSafe.get(
     "ENVIO_INDEXER_PORT",

codegenerator/cli/templates/static/codegen/src/Index.res

@@ -167,7 +167,7 @@ let startServer = (~getState, ~config: Config.t, ~shouldUseTui as _) => {
       ->Promise.thenResolve(metrics => res->endWithData(metrics))
   })
 
-  let _ = app->listen(~port=Env.serverPort, ~host=Env.serverHost)
+  let _ = app->listen(Env.serverPort)
 }
 
 type args = {@as("tui-off") tuiOff?: bool}