1 files changed, 3 insertions, 1 deletions
diff --git a/lib/yahns/server.rb b/lib/yahns/server.rb
index 67dfea2..3ba7537 100644
--- a/lib/yahns/server.rb
+++ b/lib/yahns/server.rb
@@ -141,8 +141,10 @@ class Yahns::Server # :nodoc:
        @logger.info "listening on addr=#{sock_name(io)} fd=#{io.fileno}"
        @listeners << io
        io
-    rescue Errno::EADDRINUSE => err
+    rescue Errno::EADDRINUSE
        @logger.error "adding listener failed addr=#{address} (in use)"
+      @logger.error "YAHNS_FD=#{ENV['YAHNS_FD']}"
+      system(*%W(lsof -p #$$))
      rescue => err
        @logger.fatal "error adding listener addr=#{address}"
        raise err