From d793f72010849ccbef1c8221e9651295c21573f0 Mon Sep 17 00:00:00 2001
From: dan98765 <3498629+dan98765@users.noreply.github.com>
Date: Mon, 15 Jun 2026 15:57:50 -0700
Subject: [PATCH] fix: add parentheses to is_a? call in SSEClient#close

Without explicit parentheses, Ruby parses the condition as:

  @socket.is_a?(OpenSSL::SSL::SSLSocket && @config.debug_enabled)

Since SSLSocket is truthy, && returns the right operand (a boolean),
and is_a?(true/false) raises TypeError: class or module required.

This fires on every SSE socket close and is caught by the
rescue StandardError block, producing error-level log entries.

Fixes #623.
---
 lib/splitclient-rb/sse/event_source/client.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/splitclient-rb/sse/event_source/client.rb b/lib/splitclient-rb/sse/event_source/client.rb
index 5190ad6e..a0deec8c 100644
--- a/lib/splitclient-rb/sse/event_source/client.rb
+++ b/lib/splitclient-rb/sse/event_source/client.rb
@@ -47,7 +47,7 @@ def close(status = nil)
           @connected.make_false
           @socket.sync_close = true if @socket.is_a? OpenSSL::SSL::SSLSocket
           @socket.close
-          @config.logger.debug("SSEClient socket state #{@socket.state}") if @socket.is_a? OpenSSL::SSL::SSLSocket && @config.debug_enabled
+          @config.logger.debug("SSEClient socket state #{@socket.state}") if @socket.is_a?(OpenSSL::SSL::SSLSocket) && @config.debug_enabled
         rescue StandardError => e
           @config.logger.error("SSEClient close Error: #{e.inspect}")
         end