Trying things in Appveyor...

lib/puma/minissl.rb

@@ -54,9 +54,19 @@ def read_nonblock(size, *_)
           output = engine_read_all
           return output if output
 
-          data = @socket.read_nonblock(size)
+          begin
+            data = @socket.read_nonblock(size)
+          rescue Errno::ECONNABORTED => e
+            raise "Connection aborted (#{e.inspect})"
+          rescue Errno::EAGAIN => e
+            raise "EAGAIN (#{e.inspect})"
+          rescue Errno::EWOULDBLOCK => e
+            raise "EWOULDBLOCK (#{e.inspect})"
+          rescue Exception => e
+            raise "Other exception (#{e.class.name}: #{e.inspect})"
+          end
 
-          return nil unless data
+          return nil if data.nil?
 
           @engine.inject(data)
           output = engine_read_all