Change server-host default of 127.0.0.1 to !4

This way the server works in LAN settings by default.

CHANGELOG.md

@@ -22,6 +22,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - #1273, Fix RPC ignoring unknown arguments by default - @steve-chavez
 - #1257, Fix incorrect status when a PATCH request doesn't find rows to change - @qu4tro
 
+### Changed
+
+- #1288, Change server-host default of 127.0.0.1 to !4
+
 ### Removed
 
 - #1288, Removed support for schema reloading with SIGHUP, SIGUSR1 should be used instead - @steve-chavez

src/PostgREST/Config.hs

@@ -137,7 +137,7 @@ readOptions = do
           <*> C.key "db-anon-role"
           <*> (mfilter (/= "") <$> C.key "server-proxy-uri")
           <*> C.key "db-schema"
-          <*> (fromMaybe "127.0.0.1" . mfilter (/= "") <$> C.key "server-host")
+          <*> (fromMaybe "!4" . mfilter (/= "") <$> C.key "server-host")
           <*> (fromMaybe 3000 . join . fmap coerceInt <$> C.key "server-port")
           <*> (fmap encodeUtf8 . mfilter (/= "") <$> C.key "jwt-secret")
           <*> (fromMaybe False . join . fmap coerceBool <$> C.key "secret-is-base64")
@@ -218,7 +218,7 @@ readOptions = do
           |db-pool = 10
           |db-pool-timeout = 10
           |
-          |server-host = "127.0.0.1"
+          |server-host = "!4"
           |server-port = 3000
           |
           |## base url for swagger output