From c4056a4a702cb2e73d882ffa0729b66797660a18 Mon Sep 17 00:00:00 2001 From: normal Date: Sun, 22 Apr 2018 21:21:06 +0000 Subject: net/imap: set SO_KEEPALIVE on TCP sockets Otherwise connections (commonly on IDLE, but it could be any command) may never receive notifications of link errors. [ruby-core:86628] [Feature #14703] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63243 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- lib/net/imap.rb | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/net/imap.rb b/lib/net/imap.rb index 3d33b94fdd..b42186dce0 100644 --- a/lib/net/imap.rb +++ b/lib/net/imap.rb @@ -1129,7 +1129,9 @@ module Net end def tcp_socket(host, port) - Socket.tcp(host, port, :connect_timeout => @open_timeout) + s = Socket.tcp(host, port, :connect_timeout => @open_timeout) + s.setsockopt(:SOL_SOCKET, :SO_KEEPALIVE, true) + s rescue Errno::ETIMEDOUT raise Net::OpenTimeout, "Timeout to open TCP connection to " + "#{host}:#{port} (exceeds #{@open_timeout} seconds)" -- cgit v1.2.3