QuickApp HTTPClient::request

[ivx 4]

Hi,

 

I'm trying to create Kaco solar inverter power meter QuickApp.

I have a problem with HTTPClient::request gets from Kaco "Operation canceled" for .csv files requests.

Any html request to same Kaco will work, but .csv files will fail.

The problem probably is related to Kaco response. it's response data is not between html tags(while Content-type is text/html), i suspect that's the cause of problem.

Below is debug trace of request/response

Quote

GET /realtime.csv HTTP/1.1
Host: 192.168.2.192
Accept: text/html, application/xhtml+xml, */*
User-Agent: avhttp/2.9.9
Connection: close
Content-Length: 0

 

HTTP/1.1 200 OK
Content-Length:     36
Content-type: text/html

 

1639040376;0;0;0;0;0;0;0;0;0;0;0;0;2
 

 

Is there any way i can make HTTPClient to work or TCPSocket is the only option i can use ?

 

Thanks,

[tinman 1,070]

i think TCPSocket is the best solution, after :write you can do :readUntil and sub the csv part from the response. 

[ivx 4]

-

Edited December 9, 2021 by ivx

[tinman 1,070]

that might be the case (or somethng else, as i tested months ago with wireshark session, i havn't see missing characters), i think you will find here in forum multiple examples showing similar issues. The way how it works is lua->luabind->boost->avhttp i think, so it might that Fibaro messed something up. For now i decided to use TCPSocket to fix "canceled / closed" issue.

[ivx 4]

 

I will check TCP Client option.

 

 

Edited December 9, 2021 by ivx

[ivx 4]

I found actual cause, this is related to HTTP header Connection.

HTTPClient by default uses value "close", but for some reason HTTP client hangs on some http servers.

In my case keep-alive fix all errors.

 

Option will fix this http error.

options={

            headers = { 

                Connection = "keep-alive"

            }

        }