You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ssl_test_server.rb
    path of file: ./repos/httparty/spec/support
    
    the code of the file until where you have to start completion: require 'openssl'
require 'socket'
require 'thread'

# NOTE: This code is garbage.  It probably has deadlocks, it might leak
# threads, and otherwise cause problems in a real system.  It's
    
  def thread_main
    until @stopping_mutex.synchronize { @stopping }
      (rr, _, _) = select([@ssl_server.to_io], nil, nil, 0.1)

      next unless rr && rr.include?(@ssl_server.to_io)

      socket = @ssl_server.accept

      Thread.new {
        header = []

        until (line = socket.readline).rstrip.empty?
          header << line
        end