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Note that the interface versions of Mac and Windows are slightly different. Start Wireshark after installation, and the main interface is as follows.

Wiresharkĭownload the installation package on the ( ). This topic describes how to use Wireshark and TCPDUMP. Common network-layer problems include SSL handshake failure, TCP link interruption, and retransmission. Wireshark for Mac and Windows, Network Monitor for Windows, and TCPDUMP are common tools that you can use to capture packets at the network layer. To analyze problems that occur at the TCP/IP layer, you must use the tool for capturing and analyzing TCP packets. Generally, the packets can be captured on different devices, such as the client (A), the intermediate device (B), or the server (C), as shown in the following figure.Ĭharles and Fiddler can help capture and analyze problems that occur at the HTTP layer.

In detail, the network interface controller (NIC) port is monitored to capture images of TCP packets. Unlike packets that are captured by using the intermediate proxy in Charles or Fiddler, TCP packets are captured in non-intrusive mode. Such symptoms include connection interruption, TLS handshake failure, DNS resolution failure, and other errors. You can capture network packet data to analyze various symptoms caused by network problems. Various network problems cause confusing behaviors and symptoms to mobile applications. Alibaba Cloud does not make any guarantee, express or implied, with respect to the performance and reliability of third-party products and potential impacts of operations on the products. Disclaimer: This topic may contain information about third-party products.