made gopherd less CPU-heavy

gopherd.lua

@@ -67,11 +67,12 @@ end
 local function handleConnect(client)
  client:settimeout(0)
  threads[pcount+1] = coroutine.create(function() local w,err = pcall(function()
+  local host,port = client:getsockname()
   repeat
    coroutine.yield()
    line=client:receive()
   until line
-  print(line)
+  print(string.format("%s:%d: %s",host,port,line))
   local path,args = config.path .. cleanPath(line)
   local attr = fs.attributes(path)
   if attr then
@@ -121,17 +122,23 @@ local function handleConnect(client)
 end
 
 local server = socket.bind("*",config.bindport)
-server:settimeout(config.timer)
 while true do -- totally not a scheduler
  client = server:accept()
  if client then
+  server:settimeout(config.timer)
   handleConnect(client)
  end
+ local c = 0
  for k,v in pairs(threads) do
   if coroutine.status(v) == "dead" then
    threads[k] = nil
   else
    coroutine.resume(v)
+   c = c + 1
   end
  end
+ if c == 0 then
+  -- if there are no clients connected, make server:accept() block forever
+  server:settimeout(inf)
+ end
 end