TCP Port Not Working

I started a runpod instance and specifed TCP port, I got something like this

Public IP: <iphere>
Internal: 22 External: 35292
Internal: 35293 External: 35293
Internal: 35294 External: 35294

I create a simple app to test out

from flask import Flask

app = Flask(__name__)

@app.route('/hello', methods=['GET'])
def hello_world():
    return {"text": "hello"}

if __name__ == '__main__':
    app.run(debug=True, port=35293)

from flask import Flask

app = Flask(__name__)

@app.route('/hello', methods=['GET'])
def hello_world():
    return {"text": "hello"}

if __name__ == '__main__':
    app.run(debug=True, port=35293)

Now curl http://127.0.0.1:35293/hello is working
but if I change local host with public ip and same port 35293 it gets connection refused

Solution

The issue here is that you need to bind to

0.0.0.0

0.0.0.0

and not the default of

127.0.0.1

127.0.0.1

to access the public IP.

Jump to solution

Runpod•2y ago•

19 replies

akx

TCP Port Not Working

from flask import Flask

app = Flask(__name__)

@app.route('/hello', methods=['GET'])
def hello_world():
    return {"text": "hello"}

if __name__ == '__main__':
    app.run(debug=True, port=35293)

from flask import Flask

app = Flask(__name__)

@app.route('/hello', methods=['GET'])
def hello_world():
    return {"text": "hello"}

if __name__ == '__main__':
    app.run(debug=True, port=35293)

Now curl http://127.0.0.1:35293/hello is working
but if I change local host with public ip and same port 35293 it gets connection refused

Solution

The issue here is that you need to bind to

0.0.0.0

0.0.0.0

and not the default of

127.0.0.1

127.0.0.1

to access the public IP.

Jump to solution

TCP Port Not Working

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