Network debugging

Fiddler is a powerful web debugging proxy tool that is widely used in development and testing. It allows users to monitor and modify HTTP/HTTPS traffic, helping developers find problems and optimize application performance. When using Fiddler, it is important to understand how to view the IP address of the proxy server, especially when performing network debugging and analysis.Basic functions of FiddlerFiddler intercepts HTTP requests and responses and provides a visual interface that allows users to easily view and analyze network traffic. It not only supports Windows, but can also run on macOS and Linux. Fiddler's features include:- Traffic monitoring: View all HTTP/HTTPS requests in real time.- Request modification: You can modify request headers, request bodies and other information to help debugging.- Performance Analysis: Provides performance metrics such as response time and data size.Check the IP address of the Fiddler proxy serverWhen using Fiddler for network debugging, it is very important to know the IP address of the proxy server. This can help users determine whether the network connection is normal and whether there are other network problems.1. Open Fiddler: After starting Fiddler, it is automatically configured as a system proxy by default and can start capturing HTTP traffic.2. Check the proxy settings: In the Fiddler menu bar, go to "Tools" > "Options" and enter the "Connections" tab. Here, you can see Fiddler's proxy settings, including port numbers and IP addresses.3. Confirm the IP address: In the "Connections" tab, Fiddler usually displays the IP address after "Fiddler listens on". This address is the IP address of the Fiddler proxy server. Usually, it will be a local IP address, such as `127.0.0.1`, but if used in a LAN or other network environment, it may be displayed as a LAN IP.4. Use command line tools: In addition to viewing the IP address in Fiddler, you can also use command line tools to confirm. Open the command prompt and enter `ipconfig` (Windows) or `ifconfig` (macOS/Linux) to view all network interface information of the local machine, including the IP address.Combination of Fiddler and IP2worldDuring the network debugging process, IP2world, as a brand that provides IP address-related services, can provide users with additional support. Through IP2world, users can obtain more information about IP addresses, including geographic location, operator, etc. This information is very useful during the debugging process, especially when dealing with requests related to geographic location.- Geographic location analysis: Using IP2world, users can obtain geographic location information based on IP addresses to help analyze user access behavior.- Operator information: Understanding the visitor's network operator helps optimize the routing and performance of network requests.FAQFiddler cannot capture traffic, what should I do?If Fiddler cannot capture traffic, check the following aspects:- Make sure Fiddler is set as a system proxy.- Check your firewall settings to make sure Fiddler is working properly.- In Tools > Options, make sure HTTPS decryption is enabled.How do I change Fiddler's proxy port?In Tools > Options > Connections, you can modify Fiddler's listening port. After changing, you need to restart Fiddler for the settings to take effect.How does IP2world help me with network debugging?With IP2world, users can quickly obtain detailed information about IP addresses, which helps analyze the source and destination of network requests, allowing for more effective debugging.ConclusionViewing the IP address of the Fiddler proxy server is an essential skill in network debugging. Mastering this skill can not only help developers better understand network traffic, but also improve debugging efficiency. Combined with IP2world's services, users can obtain more comprehensive IP address information to further optimize network requests and application performance. When using Fiddler, make sure to regularly check proxy settings and IP addresses to identify and resolve potential issues in a timely manner.