[GitHub] [apisix] nic-6443 commented on issue #9273: help request: resty http got BAD ARGUMENT exception by accident

["nic-6443 (via GitHub)" <gi...@apache.org>]

nic-6443 commented on issue #9273:
URL: https://github.com/apache/apisix/issues/9273#issuecomment-1502720569

   ```
   local function _receive_status(sock)
       local line, err = sock:receive("*l")
       if not line then
           return nil, nil, nil, err
       end
   
       local version = tonumber(str_sub(line, 6, 8)) -- line is a boolean?
   ```
   The error message is indeed very strange. According to the [documentation of the `tcpsock:receive`](https://github.com/openresty/lua-nginx-module/tree/v0.10.21#tcpsockreceive) function, the returned data should be a string type, but the error here says that it is a boolean type variable.
   Can you help capture a network packet from apisix to consul using tcpdump? This way we can see what kind of tcp payload triggered the above error.


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