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freeCodeCamp/curriculum/challenges/chinese/09-information-security/python-for-penetration-testing/developing-a-banner-grabber.md

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---
id: 5ea9997bbec2e9bc47e94db3
challengeType: 11
videoId: CeGW761BIsA
---
## Description
<section id='description'>
</section>
## Tests
<section id='tests'>
```yml
question:
text: |
Fill in the blanks to complete the `banner` function below:
```py
def banner(ip, port):
s = socket.socket()
s.__A__((ip, __B__))
print(s.recv(1024))
```
answers:
- |
A: `connect`
B: `port`
- |
A: `getsockname`
B: `'1-1024'`
- |
A: `connect`
B: `int(port)`
solution: 3
```
</section>