osctld: remove buffer from ct wrapper altogether

osctld/bin/osctld-ct-wrapper

@@ -27,29 +27,6 @@ require 'pty'
 require 'socket'
 require 'timeout'
 
-class StringBuffer
-  def initialize(max_size: 4096)
-    @buffer = ''
-    @max_size = max_size
-  end
-
-  def <<(data)
-    @buffer << data
-
-    if @buffer.length > @max_size
-      @buffer[0..(@buffer.length - @max_size - 1)] = ''
-    end
-
-    nil
-  end
-
-  def read
-    ret = @buffer.clone
-    @buffer.clear
-    ret
-  end
-end
-
 class Wrapper
   def initialize(args)
     ctid = args.shift
@@ -58,7 +35,6 @@ class Wrapper
     @current_rows = 25
     @current_cols = 80
     @cmd_buf = ''
-    @read_buf = StringBuffer.new
 
     Process.setproctitle("osctld: CT #{ctid}")
   end
@@ -80,7 +56,7 @@ class Wrapper
 
   protected
   attr_reader :server, :socket, :client
-  attr_reader :pid, :cmd_buf, :read_buf, :current_rows, :current_cols
+  attr_reader :pid, :cmd_buf, :current_rows, :current_cols
 
   def work(r_pty, w_pty)
     rs, _ = IO.select([server, client, r_pty].compact)
@@ -200,17 +176,15 @@ class Wrapper
 
   def send_to_client(data)
     if client
-      to_send = read_buf.read + data
-      client.send(to_send, 0) unless to_send.empty?
+      client.send(data, 0) unless data.empty?
     else
-      read_buf << data
+      # client not connected, data is dropped
     end
 
   rescue SystemCallError
     # osctld has crashed/exited
     @client.close
     @client = nil
-    read_buf << data
   end
 end