diff --git a/streaming/index.js b/streaming/index.js
index d7bfa65422..b5f6dbd87f 100644
--- a/streaming/index.js
+++ b/streaming/index.js
@@ -9,6 +9,7 @@ const log = require('npmlog');
 const url = require('url');
 const WebSocket = require('uws');
 const uuid = require('uuid');
+const fs = require('fs');
 
 const env = process.env.NODE_ENV || 'development';
 
@@ -70,6 +71,9 @@ const redisUrlToClient = (defaultConfig, redisUrl) => {
 const numWorkers = +process.env.STREAMING_CLUSTER_NUM || (env === 'development' ? 1 : Math.max(os.cpus().length - 1, 1));
 
 const startMaster = () => {
+  if (!process.env.SOCKET && process.env.PORT && isNaN(+process.env.PORT)) {
+    log.warn('UNIX domain socket is now supported by using SOCKET. Please migrate from PORT hack.');
+  }
   log.info(`Starting streaming API server master with ${numWorkers} workers`);
 };
 
@@ -574,9 +578,16 @@ const startWorker = (workerId) => {
     });
   }, 30000);
 
-  server.listen(process.env.PORT || 4000, process.env.BIND || '0.0.0.0', () => {
-    log.info(`Worker ${workerId} now listening on ${server.address().address}:${server.address().port}`);
-  });
+  if (process.env.SOCKET || process.env.PORT && isNaN(+process.env.PORT)) {
+    server.listen(process.env.SOCKET || process.env.PORT, () => {
+      fs.chmodSync(server.address(), 0o666);
+      log.info(`Worker ${workerId} now listening on ${server.address()}`);
+    });
+  } else {
+    server.listen(+process.env.PORT || 4000, process.env.BIND || '0.0.0.0', () => {
+      log.info(`Worker ${workerId} now listening on ${server.address().address}:${server.address().port}`);
+    });
+  }
 
   const onExit = () => {
     log.info(`Worker ${workerId} exiting, bye bye`);