Streaming response wrapping for custom transport layers (error 3)

import micropip
await micropip.install('https://raw.githubusercontent.com/psymbio/pyodide_wheels/main/multidict/multidict-4.7.6-py3-none-any.whl', keep_going=True)
await micropip.install('https://raw.githubusercontent.com/psymbio/pyodide_wheels/main/frozenlist/frozenlist-1.4.0-py3-none-any.whl', keep_going=True)
await micropip.install('https://raw.githubusercontent.com/psymbio/pyodide_wheels/main/aiohttp/aiohttp-3.9.1-py3-none-any.whl', keep_going=True)
await micropip.install('https://raw.githubusercontent.com/psymbio/pyodide_wheels/main/openai/openai-1.3.7-py3-none-any.whl', keep_going=True)
await micropip.install('https://raw.githubusercontent.com/psymbio/pyodide_wheels/main/urllib3/urllib3-2.1.0-py3-none-any.whl', keep_going=True)

await micropip.install("ssl")
import ssl
await micropip.install("httpx", keep_going=True)
import httpx
await micropip.install('https://raw.githubusercontent.com/psymbio/pyodide_wheels/main/urllib3/urllib3-2.1.0-py3-none-any.whl', keep_going=True)
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
import json

class URLLib3Stream(httpx.SyncByteStream):
    def __init__(self, stream):
        self._stream = stream

    def __iter__(self):
        # print(self._stream)
        # print(dir(self._stream))
        # print(self._stream.__self__)
        # print(dir(self._stream.__self__))
        print(self._stream.__self__.data)
        with httpx._transports.default.map_httpcore_exceptions():
            for part in self._stream:
                yield part

    def close(self):
        if hasattr(self._stream, "close"):
            self._stream.close()


class URLLib3Transport(httpx.BaseTransport):
    def __init__(self):
        # self._pool = urllib3.PoolManager()
        self._pool = urllib3.connectionpool.ConnectionPool(host="localhost")

    def handle_request(self, request: httpx.Request):
        payload = json.loads(request.content.decode("utf-8").replace("'",'"'))
        urllib3_response = urllib3.request(
            method=request.method,
            url=str(request.url),
            headers=request.headers,
            json=payload,
            # stream=True,
            preload_content=False
        )
        headers = [(b"content-type", b"application/json")]
        return httpx.Response(
            200,
            headers=headers,
            stream=URLLib3Stream(urllib3_response.stream)
        )

client = httpx.Client(transport=URLLib3Transport())

from openai import OpenAI
from openai import AzureOpenAI
import openai
import os

os.environ['AZURE_OPENAI_API_KEY'] = "xxx"
openai_client = AzureOpenAI(
    api_version="2023-07-01-preview",
    azure_endpoint="https://xxx.openai.azure.com/",
    http_client=client
)

response = openai_client.chat.completions.with_raw_response.create(
    messages=[{
        "role": "user",
        "content": "sing me a song",
    }],
    model="gpt-35-turbo",
    max_tokens=30,
    temperature=0.7,
    # stream=True
)

completion = response.parse()
print(completion)