From b777d31a98dfb55e2d81712d51de5dc1383be2e5 Mon Sep 17 00:00:00 2001
From: Shahar Mike <chakaz@users.noreply.github.com>
Date: Tue, 23 Jan 2024 10:19:53 +0200
Subject: [PATCH] feat(server): Add `backlog` flag for `listen()` (#2456)

* feat(server): Add `backlog` flag for `listen()`
---
 src/server/dfly_main.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/server/dfly_main.cc b/src/server/dfly_main.cc
index 734ec1569685..9ff31e9e2b2f 100644
--- a/src/server/dfly_main.cc
+++ b/src/server/dfly_main.cc
@@ -73,6 +73,8 @@ ABSL_FLAG(bool, force_epoll, false,
 ABSL_FLAG(bool, version_check, true,
           "If true, Will monitor for new releases on Dragonfly servers once a day.");
 
+ABSL_FLAG(uint16_t, tcp_backlog, 128, "TCP listen(2) backlog parameter.");
+
 using namespace util;
 using namespace facade;
 using namespace io;
@@ -711,6 +713,7 @@ Usage: dragonfly [FLAGS]
   pool->Run();
 
   AcceptServer acceptor(pool.get());
+  acceptor.set_back_log(absl::GetFlag(FLAGS_tcp_backlog));
 
   int res = dfly::RunEngine(pool.get(), &acceptor) ? 0 : -1;