net_socket_init: Cannot create socket: Cannot assign requested address

[alpho-gav]

Following up on Issue #65

It seems like I'm having the same problem again. This problem happens when I set a static IP in /etc/dhcpcd.conf

When I don't have a static IP, it works fine.

[alpho-gav]

You know, it might have to do with my code I'm using the share wlan to eth0 as well?

ip_address="10.0.0.1" netmask="255.255.255.0" dhcp_range_start="10.0.0.2" dhcp_range_end="10.0.0.100" dhcp_time="12h" eth="eth0" wlan="wlan0"

sudo systemctl start network-online.target &> /dev/null

sudo iptables -F sudo iptables -t nat -F sudo iptables -t nat -A POSTROUTING -o $wlan -j MASQUERADE sudo iptables -A FORWARD -i $wlan -o $eth -m state --state RELATED,ESTABLISHED -j ACCEPT sudo iptables -A FORWARD -i $eth -o $wlan -j ACCEPT

sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"

sudo ifconfig $eth $ip_address netmask $netmask

sudo ip route del 0/0 dev $eth &> /dev/null

sudo systemctl stop dnsmasq

sudo rm -rf /etc/dnsmasq.d/* &> /dev/null

echo "interface=$eth\n\ bind-interfaces\n\ server=8.8.8.8\n\ domain-needed\n\ bogus-priv\n\ dhcp-range=$dhcp_range_start,$dhcp_range_end,$dhcp_time" > /tmp/custom-dnsmasq.conf

sudo cp /tmp/custom-dnsmasq.conf /etc/dnsmasq.d/custom-dnsmasq.conf sudo systemctl start dnsmasq

sudo ifconfig eth0 down sleep 1 sudo ifconfig eth0 up sleep 1

[ravelox]

so I have this right, you have the Pi connected to the Windows machine via eth0 through a switch/hub and packets are forwarded from eth0 to wlan0?

[ravelox]

This might be a timing issue. I can see that when I run those commands, the interface doesn't get the ip address immediately after the ifconfig eth0 up. There is a delay of a few seconds.

For the final sleep, can you try with ( say ) 20 seconds?

[ravelox]

`pi@cheapnas:~ $ ./issue71.sh && raveloxmidi -c raveloxmidi.conf

• ip_address=10.0.0.1
• netmask=255.255.255.0
• dhcp_range_start=10.0.0.2
• dhcp_range_end=10.0.0.100
• dhcp_time=12h
• eth=eth0
• wlan=wlan0
• sudo systemctl start network-online.target
• sudo iptables -F
• sudo iptables -t nat -F
• sudo iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
• sudo iptables -A FORWARD -i wlan0 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
• sudo iptables -A FORWARD -i eth0 -o wlan0 -j ACCEPT
• sudo sh -c 'echo 1 > /proc/sys/net/ipv4/ip_forward'
• sudo ifconfig eth0 10.0.0.1 netmask 255.255.255.0
• sudo ip route del 0/0 dev eth0
• sudo systemctl stop dnsmasq
• sudo rm -rf /etc/dnsmasq.d/custom-dnsmasq.conf
• echo 'interface=eth0 bind-interfaces server=8.8.8.8 domain-needed bogus-priv dhcp-range=10.0.0.2,10.0.0.100,12h'
• sudo cp /tmp/custom-dnsmasq.conf /etc/dnsmasq.d/custom-dnsmasq.conf
• sudo systemctl start dnsmasq Job for dnsmasq.service failed because the control process exited with error code. See "systemctl status dnsmasq.service" and "journalctl -xe" for details.
• sudo ifconfig eth0 down
• sleep 1
• sudo ifconfig eth0 up
• sleep 1 [1583989912] [tid=3069800464] INFO: raveloxmidi (0.8.1) [1583989912] [tid=3069800464] DEBUG: get_sock_info: result: ai_flags=1031, ai_family=2, ai_sock_type=2, ai_protocol=17, ai_addrlen=16, ai_canonname=[10.0.0.1] [1583989912] [tid=3069800464] DEBUG: ai_addr=[ sin_family=2, sin_port=5004, sin_addr=10.0.0.1] [1583989912] [tid=3069800464] DEBUG: net_socket_init: network.bind_address=[10.0.0.1], family=2 [1583989912] [tid=3069800464] DEBUG: net_socket_create: Creating socket for [10.0.0.1]:5004, family=2 [1583989912] [tid=3069800464] DEBUG: get_sock_info: result: ai_flags=1031, ai_family=2, ai_sock_type=2, ai_protocol=17, ai_addrlen=16, ai_canonname=[10.0.0.1] [1583989912] [tid=3069800464] DEBUG: ai_addr=[ sin_family=2, sin_port=5004, sin_addr=10.0.0.1] [1583989912] [tid=3069800464] ERROR: net_socket_init: Cannot create socket: Cannot assign requested address [1583989912] [tid=3069800464] ERROR: Unable to create sockets [1583989912] [tid=3069800464] DEBUG: config_teardown config_items=0x95d170 count=23 pi@cheapnas:~ $ raveloxmidi -c raveloxmidi.conf [1583989925] [tid=3069206544] INFO: raveloxmidi (0.8.1) [1583989925] [tid=3069206544] DEBUG: get_sock_info: result: ai_flags=1031, ai_family=2, ai_sock_type=2, ai_protocol=17, ai_addrlen=16, ai_canonname=[10.0.0.1] [1583989925] [tid=3069206544] DEBUG: ai_addr=[ sin_family=2, sin_port=5004, sin_addr=10.0.0.1] [1583989925] [tid=3069206544] DEBUG: net_socket_init: network.bind_address=[10.0.0.1], family=2 [1583989925] [tid=3069206544] DEBUG: net_socket_create: Creating socket for [10.0.0.1]:5004, family=2 [1583989925] [tid=3069206544] DEBUG: get_sock_info: result: ai_flags=1031, ai_family=2, ai_sock_type=2, ai_protocol=17, ai_addrlen=16, ai_canonname=[10.0.0.1] [1583989925] [tid=3069206544] DEBUG: ai_addr=[ sin_family=2, sin_port=5004, sin_addr=10.0.0.1] [1583989925] [tid=3069206544] DEBUG: net_socket_create: Creating socket for [10.0.0.1]:5005, family=2 [1583989925] [tid=3069206544] DEBUG: get_sock_info: result: ai_flags=1031, ai_family=2, ai_sock_type=2, ai_protocol=17, ai_addrlen=16, ai_canonname=[10.0.0.1] [1583989925] [tid=3069206544] DEBUG: ai_addr=[ sin_family=2, sin_port=5005, sin_addr=10.0.0.1] [1583989925] [tid=3069206544] DEBUG: net_socket_create: Creating socket for [10.0.0.1]:5006, family=2 [1583989925] [tid=3069206544] DEBUG: get_sock_info: result: ai_flags=1031, ai_family=2, ai_sock_type=2, ai_protocol=17, ai_addrlen=16, ai_canonname=[10.0.0.1] [1583989925] [tid=3069206544] DEBUG: ai_addr=[ sin_family=2, sin_port=5006, sin_addr=10.0.0.1] [1583989925] [tid=3069206544] WARNING: net_socket_setup: Unable to open /dev/sequencer : Permission denied [1583989925] [tid=3069206544] INFO: Adding service 'raveloxmidi._apple-midi._udp' [1583989925] [tid=3069206544] DEBUG: net_socket_loop_init: pipe0=9 pipe1=10 [1583989926] [tid=3063026672] INFO: Service 'raveloxmidi' successfully established.`

[alpho-gav]

I'll give it a shot, thank you.

[alpho-gav]

I put the Internet Sharing code as a crontab process. The Pimidi code now runs when the "Pi User" logs in. I have no issues. Must have been a timing problem.

Thank you