net: enable SO_REUSEADDR, SO_REUSEPORT options on stream, multicast listeners only
This CL changes default SOL_SOCKET settings to mitigate connect
failure on OpenBSD or similar platforms which support randomized
transport protocol port number assignment.
Fixes #2830.
R=rsc, jsing
CC=golang-dev
https://golang.org/cl/5648044
diff --git a/src/pkg/net/sockopt_windows.go b/src/pkg/net/sockopt_windows.go
index 842bccc..46661e2 100644
--- a/src/pkg/net/sockopt_windows.go
+++ b/src/pkg/net/sockopt_windows.go
@@ -18,16 +18,18 @@
// Note that some operating systems never admit this option.
syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, 0)
}
+ // Allow broadcast.
+ syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1)
+ return nil
+}
+func setDefaultListenerSockopts(s syscall.Handle, f, t int) error {
// Windows will reuse recently-used addresses by default.
// SO_REUSEADDR should not be used here, as it allows
// a socket to forcibly bind to a port in use by another socket.
// This could lead to a non-deterministic behavior, where
// connection requests over the port cannot be guaranteed
// to be handled by the correct socket.
-
- // Allow broadcast.
- syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1)
return nil
}
