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Error in call to API function "files/list_folder": request body: could not decode input as JSON
Good morning,
I do this request with Arduino:
client.print(String("POST /2/files/list_folder HTTP/1.1\r\n") +
"Host: api.dropboxapi.com" +
"User-Agent: ESP8266/Arduino_YAGI\r\n" +
"Authorization: Bearer " + (String)my_token +"\r\n" +
"Accept: */*"+
"Content-Type: application/json" +
"Content-Length: 33" + "\r\n" + "\r\n" +
"Dropbox-API-Arg: {\"path\":\"/glucose/201901/09/15/\"}"
);
so, the arg is:
Dropbox-API-Arg: {"path":"/glucose/201901/09/15/"}
The 'client' variable is:
WiFiClientSecure client;
where 'WiFiClientSecure' is a package of the library to do secure calls.
But I receive this error:
HTTP/1.1 400 Bad Request
Server: nginx
Date: Thu, 10 Jan 2019 09:53:23 GMT
Content-Type: text/plain; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Content-Security-Policy: sandbox; frame-ancestors 'none'
X-Dropbox-Request-Id: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Content-Disposition: attachment; filename='error'
5f
Error in call to API function "files/list_folder": request body: could not decode input as JSON
Any idea to resolve this error?
Thank you very much in advance!
FOUND!
I used static IP:162.125.5.7to access the server.
Probably Drobbox changed the IP a few days ago.
Now I switched to
api.dropboxapi.comand everything works like a charm.Thank you for the support! :)
- Greg-DB
Dropbox Staff
The /2/files/list_folder endpoint is an "RPC"-style endpoint, meaning it expects the parameters in the request body (not in a request header).
Please move your parameters to the request body instead of the "Dropbox-API-Arg" header and try again. (The "Dropbox-API-Arg" header is only used for content-upload and content-download -style endpoints.)
Good morning.
I go right with this call for about 1 year:
request = String("POST /2/files/list_folder HTTP/1.1") + "\r\n" + "Host: api.dropboxapi.com" + "\r\n" + "User-Agent: ESP8266/Arduino_blabla"\r\n" + "Authorization: Bearer MYTOKENxxxxx\r\n" + "Accept: */*" + "\r\n" + "Content-Type: application/json; charset=utf-8" + "\r\n" + "Content-Length: " + request_data.length() + "\r\n\r\n" + request_data ;With this request_data:request_data = "{\"path\":\"" + MYPATH+ "\"}";Now, days ago I started getting this error:
Error (4xx)We can't find the page you're looking for.
So, probably some logic is changed serverside...
May you please tell me what do I need to change in my API call?
Thank you.Hi deebee_it,
You haven't mentioned what is the exact "MYPATH".
First: Are you sure the path, you are referring to, exists?
Second: You are relying on utf-8 encoding. Take in mind that Dropbox interpret all JSON input as a ASCII string, the encoding set is ignored! If you are using some simbol(s) outside ASCII set, make sure they are JSON-encoded (\uXXXX, where XXXX is hexdecimal unicode code point).
PS: By the way, you have put in your expression too many, meaningless string additions. Better do some of them join to each other (for example: "Host: api.dropboxapi.com" + "\r\n" could become "Host: api.dropboxapi.com\r\n") and remove the pluses between literals string on different lines (they gonna concatente to each other at compile time). Use pluses only where needed. 😉 In such a way lot of resources gonna be saved and the application speeds up.
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