RuntimeError: builder error: top-level serializer supports only maps and structs

[travess0]

Description

When trying to send a POST request with a simple string using primp.post, the following error occurs:

RuntimeError: builder error: top-level serializer supports only maps and structs

Caused by:
    top-level serializer supports only maps and structs

How to Reproduce

Flask Test Server

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/', methods=['POST'])
def home():
    raw_data = request.get_data(as_text=True)
    
    if not raw_data:
        return jsonify({"error": "no data received"}), 400

    return jsonify({
        "string": raw_data,
    }), 200

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=3000, debug=True)

Works with curl:

curl -X POST --data "isastr" http://localhost:3000

Works with requests:

import requests

response = requests.post(
    url="http://localhost:3000", 
    data="isastr"
)

print(response.json())

Fails with primp:

import primp

response = primp.post(
    url="http://localhost:3000", 
    data="isastr"  # this causes the error
)

print(response.json())

It would be great if the library could support sending plain strings as the body of a POST request (similar to how requests handles it), or perhaps provide a more descriptive error message to help clarify the limitation. Totally understand if this is out of scope

[Rogerwa11]

🤩🤩

[deedy5]

Don't close the issue.
Do this for now:

import primp

response = primp.post(
    url="http://localhost:3000", 
    #data="isastr",  # this causes the error
    content="isastr".encode(),
)

print(response.json())