From a684355d80b5ca551dc8398a083b57e870145d94 Mon Sep 17 00:00:00 2001
From: klzgrad <kizdiv@gmail.com>
Date: Sun, 10 Mar 2024 10:30:35 +0800
Subject: [PATCH] net/socket: Use SO_REUSEPORT for server sockets

---
 src/net/socket/tcp_socket_posix.cc | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/net/socket/tcp_socket_posix.cc b/src/net/socket/tcp_socket_posix.cc
index 7d860d33d3..f2716c9924 100644
--- a/src/net/socket/tcp_socket_posix.cc
+++ b/src/net/socket/tcp_socket_posix.cc
@@ -404,6 +404,17 @@ int TCPSocketPosix::GetPeerAddress(IPEndPoint* address) const {
 
 int TCPSocketPosix::SetDefaultOptionsForServer() {
   DCHECK(socket_);
+
+#ifdef SO_REUSEPORT
+  int reuseport = 1;
+  int rv =
+      setsockopt(socket_->socket_fd(), SOL_SOCKET, SO_REUSEPORT,
+                 reinterpret_cast<const char*>(&reuseport), sizeof(reuseport));
+  // Ignore errors that the option does not exist.
+  if (rv != 0 && errno != ENOPROTOOPT)
+    return MapSystemError(errno);
+#endif  // SO_REUSEPORT
+
   return AllowAddressReuse();
 }