You can achieve this by pressing Ctrl+/ in wireshark, and typing a protocol name (http, tcp, ip, dns, dhcp, etc.). In most cases, you'll only want to focus on a specific protocol. The following screen shot shows an example of an HTTP request packet capture:Īs you can see, the PCAP file contains all sort of packets: 802.11 beacon frames, DNS query response (the first entry in the list), and HTTP request/response packets (No. Your browser will download a file called wokwi.pcap. Then, go to the code editor, press F1 and choose Download WiFi Packet Capture (PCAP) file. You can view the raw WiFi traffic using a network protocol analyzer such as Wireshark.įirst, run an ESP32 project that uses the WiFi in the simulator. Wokwi simulates a complete network stack: starting at the lowest 802.11 MAC Layer, through the IP and TCP/UDP layers, all the way up to protocols such as DNS, HTTP, MQTT, CoAP, etc. The BSSID of the virtual access point ("Wokwi-GUEST") is 42:13:37:55:aa:01, and it is listening on WiFi channel 6. The MAC address of the simulated ESP32 is 24:0a:c4:00:01:10. The IP address depends on the type of the gateway that you use: The ESP32 gets an IP address from a DHCP server running inside the Wokwi IoT gateway. Note: The Private IoT Gateway is not currently supported in Safari due to a technical limitation. This will forward all TCP connections to port 1234 on your computer to port 8080 on the simulated ESP32. You can forward a different port by running the IoT gateway with the -forward option, e.g. If your ESP32 project is an HTTP server, you can connect to it from your browser at The connection will be forwarded by the gateway to the default HTTP port (80) on the simulated ESP32. This means you are using the Private Gateway. Look at the gateway output, it should say "Client connected". Then run any ESP32 project that uses the WiFi. Answer "OK" to enable the Private Gateway, or "Cancel" to disable it and switch back to the Public Gateway. You'll be prompted if you want to enable the gateway. Usage Īfter running the gateway, open any project in Wokwi, go to the code editor, press "F1" and select "Enable Private Wokwi IoT Gateway". If you are worried about running the gateway executable on your computer, you are invited to take a look at the source code, and even build the executable file yourself (ask for instructions on discord). When you run the gateway, it should print a logo, its version, and say: "Listening on TCP port 9011". It happily runs as a standard process on your computer. The gateway does not require any administrator / root permissions. Your browser / operating system may warn you that the file may be unsafe, so you'll have to tell them to run it anyway. Then extract the ZIP file and run the executable file inside. You'll see there versions for Windows, macOS, and Linux. Installation ĭownload the latest version from the Wokwi IoT Gateway releases page. The Private Gateway is only available for users who join The Wokwi Club. You can run a web server on the ESP32 and connect to it from your browser (explained below).Your ESP32 projects can access services running on your computer or your local network (e.g.It allows faster and more robust ESP32 internet access: the data goes directly from the simulator (running in your browser) to you computer's network, without having to go through the cloud. The Private Gateway is a small application that you download and run on your computer. The Public Gateway is a great choice for playing around and learning about WiFi and networking in the ESP32. We occasionally inspect the traffic and may enforce limits if we notice excessive usage of the gateway. All the traffic is monitored for security purposes, so do not use it for private or sensitive data. It works out of the box and enables access to the internet, but not to your local network. The Public Gateway is the default internet connection method. There are two ways you can use the Wokwi IoT Gateway: the Public Gateway, and the Private Gateway. This gateway is required since web browsers do not allow direct internet access. Wokwi uses a special gateway to connect your simulated ESP32 to the internet. Note: We need to specify the auth_method to None in the ClientConfiguration.
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