+=end
+def send_md(md_string)
+# puts 'DBG: send_md; md_string.length = '+md_string.length.to_s+'; buffer_size = '+$buffer_size.to_s
+ bs = $buffer_size*2
+ $sp.print("Msg = ")
+ for i in 0..((md_string.length-1)/bs)
+# puts 'DBG bulk send'
+ if(md_string.length-i*bs<bs)
+ # puts "DBG: i="+i.to_s()
+ $sp.print(md_string[(i*bs)..-1])
+ return
+ end
+ $sp.print(md_string[(i*bs)..((i+1)*bs-1)])
+ begin
+ line=$sp.gets()
+ end while not /\./.match(line)
+ end
+end
+