[Python] Unhandled exception: Connection timed out | Flutter | REST API

I have built a REST API using Flask framework in Python and it works completely fine when tested via Postman. But when I make requests using an android emulator, I get an exception displaying "Connection timed out".

I am aware that the localhost for android emulator is 10.0.2.2:8000 and not 127.0.0.1:5000, and I am making the request accordingly. But I have still no luck in receiving the response that I want.

API code:

from collections import defaultdict
from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route("/")
def home():
return {"message": "Hello and Welcome"}


@app.route("/getkeywords", methods=["POST"])
def getKeywords():
res = request.get_json()

text = res["text"]
data = extractKeywords(text)
# print(text)

return jsonify({"data": data})


from rake_nltk import Rake

def extractKeywords(text: str):
r = Rake()
r.extract_keywords_from_text(text)
data = defaultdict(list)
for rating, keyword in r.get_ranked_phrases_with_scores():
data[rating].append(keyword)

return data


if __name__ == "__main__":
app.run(debug=True)



Flutter code:

Future<void> getKeywords(String text) async {
String mainURL = "http://10.0.2.2:8000/getkeywords";

final response = await http.post(Uri.parse(mainURL), body: {"text": text});
if (response.statusCode == 200) {
print(response.body);
} else {
throw Exception("Failed to get data");
}
}


Debug console output:

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