Memory management ESP8266节点内存不足

NodeMCU信息

> Lua 5.1.4 
> SDK 2.2.1
> Memory Usage :
> Total : 3260490 bytes 
> Used  : 9287 bytes 
> Remain: 3251203 bytes

尝试使用大json字符串响应发送HTTP响应时出错（

json\u response

）

代码：

---

是的，如果你试图发送大量数据，那是行不通的。你需要一件一件地寄这个。显示了两种方法（您可以在此处找到更多参考资料），第一种是：

srv = net.createServer(net.TCP)

function receiver(sck, data)
  local response = {}

  -- if you're sending back HTML over HTTP you'll want something like this instead
  -- local response = {"HTTP/1.0 200 OK\r\nServer: NodeMCU on ESP8266\r\nContent-Type: text/html\r\n\r\n"}

  response[#response + 1] = "lots of data"
  response[#response + 1] = "even more data"
  response[#response + 1] = "e.g. content read from a file"

  -- sends and removes the first element from the 'response' table
  local function send(localSocket)
    if #response > 0 then
      localSocket:send(table.remove(response, 1))
    else
      localSocket:close()
      response = nil
    end
  end

  -- triggers the send() function again once the first chunk of data was sent
  sck:on("sent", send)

  send(sck)
end

srv:listen(80, function(conn)
  conn:on("receive", receiver)
end)

---

这里需要进一步的反馈吗？@MarcelStör我想知道是否有办法调整内存以处理一次，尽管我想现在还不可能。

  -- a simple HTTP server
    srv = net.createServer(net.TCP)
    srv:listen(80, function(conn)
        conn:on("receive", function(sck, payload)
            sck:send("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"..json_response)
        end)
        conn:on("sent", function(sck) sck:close() end)
    end)

srv = net.createServer(net.TCP)

function receiver(sck, data)
  local response = {}

  -- if you're sending back HTML over HTTP you'll want something like this instead
  -- local response = {"HTTP/1.0 200 OK\r\nServer: NodeMCU on ESP8266\r\nContent-Type: text/html\r\n\r\n"}

  response[#response + 1] = "lots of data"
  response[#response + 1] = "even more data"
  response[#response + 1] = "e.g. content read from a file"

  -- sends and removes the first element from the 'response' table
  local function send(localSocket)
    if #response > 0 then
      localSocket:send(table.remove(response, 1))
    else
      localSocket:close()
      response = nil
    end
  end

  -- triggers the send() function again once the first chunk of data was sent
  sck:on("sent", send)

  send(sck)
end

srv:listen(80, function(conn)
  conn:on("receive", receiver)
end)