Support IPv6 UDP sockets

logstash-plugins · Oct 7, 2019 · 31d46cc · 31d46cc
1 parent 299f935
commit 31d46cc
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/lib/logstash/inputs/syslog.rb b/lib/logstash/inputs/syslog.rb
@@ -30,7 +30,7 @@ class LogStash::Inputs::Syslog < LogStash::Inputs::Base
   default :codec, "plain"
 
   # The address to listen on.
-  config :host, :validate => :string, :default => "0.0.0.0"
+  config :host, :validate => :string, :default => "::"
 
   # The port to listen on. Remember that ports less than 1024 (privileged
   # ports) may require root to use.
@@ -145,7 +145,12 @@ def udp_listener(output_queue)
     @logger.info("Starting syslog udp listener", :address => "#{@host}:#{@port}")
 
     @udp.close if @udp
-    @udp = UDPSocket.new(Socket::AF_INET)
+    if IPAddr.new(@host).ipv6?
+      @udp = UDPSocket.new(Socket::AF_INET6)
+    elsif IPAddr.new(@host).ipv4?
+      @udp = UDPSocket.new(Socket::AF_INET)
+    end
+
     @udp.bind(@host, @port)
 
     while !stop?