Pinecone http post query in Flutter release not working

Support
1

Hi, I am trying to call the Pinecone API in my Flutter app with:

final headers = {
      'Api-Key': apiKey,
      'accept': 'application/json',
      'content-type': 'application/json',
    };

    final requestBody = jsonEncode({
      'includeValues': false,
      'includeMetadata': true,
      'vector': encodedText,
      'topK': 10,
      'namespace': category,
    });

    try {
      final response = await http.post(
        Uri.parse(pineconeUrl),
        headers: headers,
        body: requestBody,
      );

I run into the issue where I get Dart/Flutter: Http request raises XMLHttpRequest error whenever I try to call the API in my release build. It works fine in my debug build. I’ve read it may be related to CORS, but after reading your doc I am not doing any localhost.

2

Hi @tengen,

Can you share the full error message you’re getting back? I want to make sure there isn’t any missing context in it.

3

I’m not able to get anything clearer from the error reporting. The code itself mentions it hits that line that reports XMLHttpRequest error when the error isn’t clear. I was able to fix it by “hosting” the pinecone query inside a Google cloud function with CORS enabled so I’m guessing the issue is the pinecone server is not CORS friendly with the http request (possibly API-wise it is, but it is not available in Dart).