[Solved] Given this Flask-SocketIO code snippet, what will the client receive when the server... Given this Flask-SocketIO code snippet, what will the client receive when the server emits 'message' event? | Flask

Flask - WebSocket and Real-Time

Given this Flask-SocketIO code snippet, what will the client receive when the server emits 'message' event?

from flask_socketio import SocketIO, emit

socketio = SocketIO(app)

@socketio.on('connect')
def handle_connect():
    emit('message', {'data': 'Welcome!'})

ANo message is sent on connect

BA plain text message 'Welcome!'

CAn error because emit needs a string message

DA JSON object with {'data': 'Welcome!'}

Step-by-Step Solution

Solution:

Step 1: Understand the emit function usage
emit sends an event with a dictionary payload as JSON to the client.
Step 2: Analyze the event and data sent on connect
On 'connect', the server emits 'message' event with {'data': 'Welcome!'} dictionary.
Final Answer:
A JSON object with {'data': 'Welcome!'} -> Option D
Quick Check:
emit sends JSON data = A JSON object with {'data': 'Welcome!'} [OK]

Quick Trick: emit sends JSON-like dict, not plain text [OK]

Common Mistakes:

MISTAKES

Thinking emit sends plain text only
Assuming emit requires string, not dict
Believing no message is sent on connect

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More Flask Quizzes

Given this Flask-SocketIO code snippet, what will the client receive when the server emits 'message' event?

Step 1: Understand the emit function usage

Step 2: Analyze the event and data sent on connect

Final Answer:

Quick Check:

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