HTTPS请求重启NodeMCU

NodeMCU信息：

> NodeMCU frightanic.com定制构建
> 分支: dev
> SSL: true
> 模块: crypto,file,gpio,http,net,node,sjson,tmr,uart,wifi,tls
> 基于Lua 5.1.4及SDK 2.2.1
> commit: d5aca39f485bf46e6d77b7fb05eaf71b8ea51bee
> 构建类型: integer -- 尝试浮点型，同样错误
> LFS : 禁用

构建二进制文件 file

在添加tls模块之前请求HTTPS时，返回值为-1，添加tls模块后请求HTTPS会重启NodeMCU。

发送请求的代码：

   print(node.heap()) -- 31824
   http.request("https://www.google.com", "HEAD", "", "",
   function(code, data)
      if (code < 0) then
        print("HTTP请求失败")
      else
        print(code, data)
      end
    end)

此外还尝试了 net 模块。

   print(node.heap()) -- 31824
   srv = tls.createConnection()
   srv:on("receive", function(sck, c) print(c) end)
   srv:on("connection", function(sck, c)
   sck:send("GET / HTTP/1.1\r\nHost: google.com\r\nConnection: keep-alive\r\nAccept: */*\r\n\r\n")
end)
   srv:connect(443,"google.com")

两种代码都导致重启原因相同：

HTTP客户端: hostname=google.com
HTTP客户端: port=443
HTTP客户端: method=GET
HTTP客户端: path=/
HTTP客户端: DNS请求
HTTP客户端: DNS挂起
> HTTP客户端: DNS发现google.com 172.217.18.46
client handshake start.
Fatal exception 0(IllegalInstructionCause):
epc1=0x4027ca20, epc2=0x00000000, epc3=0x00000000, excvaddr=0x402993e7, depc=0x00000000
þ
 ets Jan  8 2013,rst cause:2, boot mode:(3,x) -- sometimes x is 0, 6 or 7

load 0x40100000, len 26104, room 16
tail 8
chksum 0xc0
load 0x3ffe8000, len 2332, room 0
tail 12
chksum 0x3c
ho 0 tail 12 room 4
load 0x3ffe891c, len 136, room 12
tail 12
chksum 0x56
csum 0x56

在 net 模块代码中，当调用 srv:connect(443,"google.com") 时会发生重启，还会显示一行额外信息：RecvHold, By pespconn,find conn_msg fail