Rubin Shrestha
Rubin Shrestha
Blog

Ubuntu 20.04 http:// returns error code 7, connection refused In a Chrome Browser

by |Published

I am using an AllWinner H618 Development board running Ubuntu 20.04 Jammy.
Connected to this is a RPi Pico running as a web server on port 80. Using a Chrome browser and http://192.168.0.101/index.html, being the IP address of the web server
I get 192.168.0.101 refused to connect.
I have tried changing (https only mode) to allow http://
If I run sudo netstat -tulpn I get the following

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:1883 0.0.0.0:* LISTEN 1214/mosquitto
tcp 0 0 0.0.0.0:445 0.0.0.0:* LISTEN 1920/smbd
tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN 1920/smbd
tcp 0 0 127.0.0.1:5939 0.0.0.0:* LISTEN 1127/teamviewerd
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 658/systemd-resolve
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1159/sshd: /usr/sbi
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1079/cupsd
tcp6 0 0 :::1883 :::* LISTEN 1214/mosquitto
tcp6 0 0 :::3389 :::* LISTEN 1365/xrdp
tcp6 0 0 :::445 :::* LISTEN 1920/smbd
tcp6 0 0 :::9001 :::* LISTEN 1214/mosquitto
tcp6 0 0 :::139 :::* LISTEN 1920/smbd
tcp6 0 0 :::22 :::* LISTEN 1159/sshd: /usr/sbi
tcp6 0 0 ::1:3350 :::* LISTEN 1110/xrdp-sesman
tcp6 0 0 ::1:631 :::* LISTEN 1079/cupsd
udp 0 0 127.0.0.1:323 0.0.0.0:* 1116/chronyd
udp 0 0 127.0.0.53:53 0.0.0.0:* 658/systemd-resolve
udp 0 0 192.168.0.255:137 0.0.0.0:* 1086/nmbd
udp 0 0 192.168.0.188:137 0.0.0.0:* 1086/nmbd
udp 0 0 0.0.0.0:137 0.0.0.0:* 1086/nmbd
udp 0 0 192.168.0.255:138 0.0.0.0:* 1086/nmbd
udp 0 0 192.168.0.188:138 0.0.0.0:* 1086/nmbd
udp 0 0 0.0.0.0:138 0.0.0.0:* 1086/nmbd
udp6 0 0 ::1:323 :::* 1116/chronyd
udp6 0 0 :::44479 :::* 1127/teamviewerd
udp6 0 0 fe80::db8b:8c90:67c:546 :::* 932/NetworkManager

I cannot see anything listening on port 80. If I run curl -v http://192.168.0.101:80 I get the following

  • Trying 192.168.0.101:80…
  • connect to 192.168.0.101 port 80 failed: Connection refused
  • Failed to connect to 192.168.0.101 port 80 after 32 ms: Connection refused
  • Closing connection 0
    curl: (7) Failed to connect to 192.168.0.101 port 80 after 32 ms: Connection refused

If I use another computer sitting along side the dev board, on a Chrome browser http://192.168.0.101/index.html
It runs the index page and the rest of a program that resides on the Pico (webserver) connected to the Development board.

You may also like