https://git.ruby-lang.org/ruby.git/commit/?id=de4b2930f7

From de4b2930f71a88358c8f1968e410f420c54853bd Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@r...>
Date: Tue, 11 Jun 2019 06:53:33 +0900
Subject: ext/socket/ipsocket.c: Use SO_REUSEADDR for local_host/port

Sometimes ruby/spec fails when trying to specify local_host and
local_port for TCPSocket.open.

https://rubyci.org/logs/rubyci.s3.amazonaws.com/solaris11s-sunc/ruby-master/log/20190610T192504Z.fail.html.gz

diff --git a/ext/socket/ipsocket.c b/ext/socket/ipsocket.c
index dadf10f..4a444b3 100644
--- a/ext/socket/ipsocket.c
+++ b/ext/socket/ipsocket.c
@@ -99,6 +99,11 @@ init_inetsock_internal(struct inetsock_arg *arg) https://github.com/ruby/ruby/blob/trunk/ext/socket/ipsocket.c#L99
 	}
 	else {
 	    if (lres) {
+#if !defined(_WIN32) && !defined(__CYGWIN__)
+		status = 1;
+		setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
+			   (char*)&status, (socklen_t)sizeof(status));
+#endif
 		status = bind(fd, lres->ai_addr, lres->ai_addrlen);
 		local = status;
 		syscall = "bind(2)";
-- 
cgit v0.10.2


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