Clarify that the SDK lacks HTTP GET support for SSE streaming per MCP spec

Author: keisku

examples/streamable_http_client.rb

@@ -22,7 +22,8 @@ def create_logger
 end
 
 # Connect to SSE stream for real-time notifications
-# Note: The SDK doesn't support SSE streaming yet, so we use raw Net::HTTP
+# The SDK doesn't support HTTP GET for SSE streaming yet, so we use raw Net::HTTP
+# See: https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#listening-for-messages-from-the-server
 def connect_sse(session_id, logger)
   uri = URI(SERVER_URL)
 

lib/mcp/client/http.rb

@@ -2,7 +2,7 @@
 
 module MCP
   class Client
-    # TODO: https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#streamable-http (GET for SSE)
+    # TODO: https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#listening-for-messages-from-the-server
     # TODO: https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#resumability-and-redelivery
 
     class HTTP