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How to get the IP address of the local machine in python
11 Nov 2025
You can use the socket module to obtain the local IP. It is recommended to obtain the real LAN IP (such as 192.168.x.x) by connecting to 8.8.8.8 to avoid returning 127.0.0.1; in multi-network card environments, the netifaces library can be used to obtain all interface IPs.
How to use C to perform network packet sniffing?
10 Nov 2025
Using C to capture network packets requires relying on the libpcap or Npcap library. Open the network interface through pcap_open_live, capture the data packets with pcap_loop, parse the Ethernet and IP header information in the callback function, and extract the source and destination IP addresses. Administrator rights are required and BPF filters are configured correctly to improve performance. 1. Install libpcap-dev or Npcap; 2. Write code to register the callback function to process the original packet; 3. Link the -lpcap library when compiling.
Go language: How to perform reverse domain name resolution through IP address
13 Nov 2025
This tutorial aims to solve the common confusion in obtaining domain names through IP addresses in Go language. Many developers who try to use net.LookupHost for reverse resolution find that it only returns the original IP. We will delve into the correct usage of the Go standard library net package, clearly point out that the net.LookupAddr function should be used, and demonstrate through detailed example code how to efficiently and accurately resolve IP addresses into corresponding domain names, thereby realizing the reverse lookup function from IP to domain name.
Go language: Tutorial to efficiently extract IP addresses from TCP connections
12 Nov 2025
This article details how to simply and efficiently extract a pure IP address (excluding port information) from a *net.TCPConn object in the Go language. By utilizing the RemoteAddr method and type assertions provided by the Go standard library, developers can easily obtain the net.IP object to achieve precise IP address management. Tutorials will provide specific code examples and usage instructions.
Detect duplicate values for specific keys in YAML files using Python and PyYAML
09 Dec 2025
This article details how to use Python and its PyYAML library to identify duplicate entries for specific keys (such as IP addresses and types) in YAML files. By looping through the YAML data and utilizing a dictionary to track processed combinations, you can efficiently find duplicates that match the criteria and output the expected results.
Solve the 429 rate limit issue of Python request Discord API on Replit
03 Jan 2026
This article deeply explores the reasons and solutions for encountering the "429 Too Many Requests" error when using the Python requests library to send messages to the Discord API in a shared IP environment such as Replit. The core problem is that the shared IP address triggers Discord's API rate limit. The article provides diagnostic methods and recommends solving this problem by choosing a suitable deployment environment or implementing a robust rate limit handling mechanism in the code to ensure the stability and reliability of API calls.
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