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Packet capture refers to the process of obtaining and DigiPlus stockparsing network packets, which can help us analyze the data flow and protocols of the network connection. In iPhone applications, packet grabbing is a very useful technology that can help developers diagnose and solve network connection problems, and can also be used to understand the behavior of applications and network data traffic. So, how to carry out iPhone data packet capture? Here is a detailed explanation for you: 1. Download and install the package grabbing tool. The package grabbing tool isIt refers to some software that can work on iPhone devices, which can monitor all packet transmissions and save packets for users to analyze. At present, the commonly used bag grabbing tools are Charles and Fiddler, which can be used on iPhone devices. After downloading and installing the package grabbing tool, you need to set up a certificate and install it. Two. There is a precondition for setting a certificate and using the package grabbing tool, that is, a certificate needs to be installed on the device. The function of the certificate is to enable the HTTP request traffic of the iPhone device to be captured by the packet tool without configuring other parameters. Usually, these packet grabbing tools provide a function similar to "SSL Proxying" to achieve HTTPS packet decryption by installing a certificate.The certificates provided by each package grabbing tool are different, and the specific installation method varies depending on the package grabbing tool. In the Charles tool, you need to download and install the client certificate. Start Charles, open the "Help" menu, select "SSL Proxying", and then select "Install Charles Root Certificate on a Mobile Device or Rem Ote Browser". In the pop-up window, click the "Download" button to download the certificate and send it to the mailbox. Follow the prompts to install the certificate on the iPhone device. 3. To configure the agent in the iPhone device, you need to redirect all network connections to the packet grabbing tool by setting up the agent.Open the settings of the iPhone device, select "Wi-Fi", long press the name of the Wi-Fi network you are connected to, and select "Configure Proxy". In the pop-up window, select "Manual" and enter the IP address and port number of the packet grabbing tool. In the Charles tool, if it is Charles running on a Mac computer, connect the iOS device to the same LAN of the computer. Then open "Proxy" in Charles - "Proxy Settings" - Check "Enable SSL Proxying" in "Proxies" and add the domain name or IP location that needs to be grabbed in "Locations" Address, such as "*.Facebook.com". Four. After starting to grab packets and configure the proxy in the iPhone device, all network connection traffic will be redirected to the packet grabbing tool, and then you can start grabbing packets. In Charles, you can open the "Session" - "SSL Proxying Settings" menu to check the packet capture status. During the packet capture process, you can see all the network connection traffic and HTTP/HTTPS request response data. These data can be used to analyze the behavior of the application, find access problems of the application, or understand the behavior of the application in the background. Summary: Packet grabbing is a very important part of iPhone application development. It can help developers diagnose and solve network connection problems, and can also be used to understand the behavior of applications and network data traffic.The most basic steps above allow you to successfully capture data on your iPhone.

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