Using Vagrant, I am running a Ubuntu box with PHP-FPM and Xdebug 2 in Hyper-V. The network I am using is Hyper-V's default switch.
From my host, I can connect to the Ubuntu box using SSH and the web server is also accessible using the VM's IP address in my browser address bar. From inside the VM, I can access the internet and I can also ping the host by the IP address of the Hyper-V default switch. So the network seems to be set up correctly.
However, the Xdebug debugger running in the VM won't connect to my IDE (PhpStorm) running on my host.
The xdebug.log shows (172.17.96.1 is the IP address of the Hyper-V default switch)
[2641] Log opened at 2022-09-15 12:59:46
[2641] I: Checking remote connect back address.
[2641] I: Checking header 'HTTP_X_FORWARDED_FOR'.
[2641] I: Checking header 'REMOTE_ADDR'.
[2641] I: Remote address found, connecting to 172.17.96.1:9000.
[2645] E: Time-out connecting to client (Waited: 200 ms). :-(
[2645] Log closed at 2022-09-15 12:59:46
even though PhpStorm on my host seems to be listening on every IP address:
PS C:\Users\me> netstat -a
Active Connections
Proto Local Address Foreign Address State
...
TCP 0.0.0.0:9000 MyLaptop:0 LISTENING
TCP 0.0.0.0:9003 MyLaptop:0 LISTENING
...
If I use telnet in the VM to connect to my host, it doesn't timeout, but it also doesn't connect successfully:
vagrant@ubuntu-18:~$ telnet 172.17.96.1 9000
Trying 172.17.96.1...
It stays at "Trying" forever.
How can I make the Xdebug debugger connect from the VM to PhpStorm on my host?
I shortened my IPv6 address on the WiFi adapter
PS C:\WINDOWS\system32> ipconfig
Windows IP Configuration
Ethernet adapter VirtualBox Host-Only Network:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::84b9:f362:fa7f:ae2d%13
IPv4 Address. . . . . . . . . . . : 192.168.56.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
Unknown adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Wireless LAN adapter Local Area Connection* 1:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Wireless LAN adapter Local Area Connection* 10:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Wireless LAN adapter WiFi:
Connection-specific DNS Suffix . : speedport.ip
IPv6 Address. . . . . . . . . . . : 2003:**********
Temporary IPv6 Address. . . . . . : 2003:**********
Link-local IPv6 Address . . . . . : fe80::bc1a:df06:b465:974b%24
IPv4 Address. . . . . . . . . . . : 192.168.2.200
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : fe80::1%24
192.168.2.1
Ethernet adapter Bluetooth Network Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Ethernet adapter vEthernet (Default Switch):
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::99ae:3e6e:68bc:a228%30
IPv4 Address. . . . . . . . . . . : 172.17.96.1
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . :
Ethernet adapter vEthernet (WSL):
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::41c8:f5fb:fbd4:3bef%60
IPv4 Address. . . . . . . . . . . : 172.19.32.1
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . :
vagrant@ubuntu-18:~$ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.111.24 netmask 255.255.240.0 broadcast 172.17.111.255
inet6 fe80::215:5dff:fe38:101 prefixlen 64 scopeid 0x20<link>
ether 00:15:5d:38:01:01 txqueuelen 1000 (Ethernet)
RX packets 651 bytes 102218 (102.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 757 bytes 118391 (118.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 90 bytes 7020 (7.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 90 bytes 7020 (7.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vagrant@ubuntu-18:~$ ping 172.17.96.1
PING 172.17.96.1 (172.17.96.1) 56(84) bytes of data.
64 bytes from 172.17.96.1: icmp_seq=1 ttl=128 time=0.294 ms
64 bytes from 172.17.96.1: icmp_seq=2 ttl=128 time=0.527 ms
64 bytes from 172.17.96.1: icmp_seq=3 ttl=128 time=0.366 ms
64 bytes from 172.17.96.1: icmp_seq=4 ttl=128 time=0.526 ms
64 bytes from 172.17.96.1: icmp_seq=5 ttl=128 time=0.704 ms
64 bytes from 172.17.96.1: icmp_seq=6 ttl=128 time=0.375 ms
^C
--- 172.17.96.1 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5125ms
rtt min/avg/max/mdev = 0.294/0.465/0.704/0.137 ms
I am running a Ubuntu box with PHP-FPM and Xdebug 2
Xdebug 2 is no longer supported, please upgrade to Xdebug 3.
The xdebug.log shows (172.17.96.1 is the IP address of the Hyper-V default switch)
That is not true, it shows the IP address from where the HTTP request initiated from, because you have remote IP address discovery turned on. This does not work in all situations, especially with virtualisation. This HTTP address is not necessarily an IP address that the Linux guest can talk to on the host.
You will likely need to use the public IP address of your host, which is 192.168.2.200 for xdebug.remote_host:
Wireless LAN adapter WiFi:
Connection-specific DNS Suffix . : speedport.ip
…
IPv4 Address. . . . . . . . . . . : 192.168.2.200
And also disable the auto discovery.