error: this site cannot be reached

yoursunny / esp32cam

OV2640 camera on ESP32-CAM, Arduino library

https://esp32cam.yoursunny.dev

ISC License

473 stars 168 forks source link

error: this site cannot be reached #29

Closed reemastha706 closed 2 years ago

reemastha706 commented 2 years ago

I am using the library, however, even though the camera is initialized and the web server IP address is shown in the serial monitor, I cannot access the site. I haven't used the IP address anywhere else.

yoursunny commented 2 years ago

Install Wireshark on your computer.
Select the network interface that you use to connect to the camera. If you have both wired Ethernet and WiFi, consider disabling one so that you can be certain which interface is being used.
Type host 192.0.2.1 (substitute the IP address with what's shown on the serial console) in the Wireshark filter box, start capturing.
After you attempt to access the camera, stop capturing in Wireshark, and save as .pcap or .pcapng file.
Upload the capture file.

reemastha706 commented 2 years ago

Install Wireshark on your computer.

Select the network interface that you use to connect to the camera. If you have both wired Ethernet and WiFi, consider disabling one so that you can be certain which interface is being used.

Type host 192.0.2.1 (substitute the IP address with what's shown on the serial console) in the Wireshark filter box, start capturing.

After you attempt to access the camera, stop capturing in Wireshark, and save as .pcap or .pcapng file.

Upload the capture file.

Hi. Thanks for your reply. I thought that I messed up something while downloading this library, however, it seems that I have been doing something wrong as even with the example code from esp32cam, the webserver couldn't be reached. It was working fine before. I want to use the video stream in opencv so Wireshark might not be the good option, right?

yoursunny commented 2 years ago

I want to use the video stream in opencv so Wireshark might not be the good option, right?

You need to use either Wireshark or tcpdump to determine why your computer cannot reach the camera.

reemastha706 commented 2 years ago

https://drive.google.com/file/d/1ujLPiIWvXfbJqTScBt1L8125WnHEVKyJ/view?usp=sharing This is the pcap file.

yoursunny commented 2 years ago

capture.pcapng.gz only contains an ARP announcement, indicating that the ESP32 is at 192.168.0.101. There's no traffic indicating that the computer attempts to connect to the ESP32.

Possible reasons include:

The computer is trying to connect to a wrong IP address.
The connection is blocked by a firewall on the computer.
The computer has a routing entry that causes the traffic to go out through another network interface that does not lead to the ESP32.

reemastha706 commented 2 years ago

Thanks. Problem was with my wifi router. When I tried hotspot from ethernet, it worked.