'test.sh TestRegistration' fails when other Core NFs and UPF are running on different server (physical machine)

chliny2016 · September 8, 2020, 5:43am

Dear 5GC team,
My UPF is running on a separate ubuntu 1804 (desktop server), with IP 192.168.5.53; and all other core NFs (except n3iwf, there is no n3iwf running) are running on another ubuntu 1804 (desktop server), with IP 192.168.2.52).

My UPF is running, and my 5GC Core NFs are running fine.

On the 5GC core server, I open another terminal, and run ‘test.sh TestRegistration’, and I get below error:

Would you pls help? thanks a lot!

~/free5gc$ ./test.sh TestRegistration
[sudo] password for andrew: 
# free5gc/src/test_test [free5gc/src/test.test]
./registration_test.go:107:18: undefined: connectToUpf
./registration_test.go:1269:19: undefined: connectToUpf
./registration_test.go:1332:18: undefined: connectToUpf
./registration_test.go:1354:19: undefined: connectToUpf
./registration_test.go:1670:18: undefined: connectToUpf
FAIL	free5gc/src/test [build failed]

in registration_test.go, in the above 5 lines (calling function ‘connectToUpf’), I changed UpfIP from ‘10.200.200.102’ (default) to ‘192.168.5.53’, and run the ‘test.sh TestRegistration’ again, and I still get above same error.

And my smfcfg.conf and upfcfg.yaml settings (IPs) are all default value (IPs):

~/free5gc/src/upf/build/config/upfcfg.yaml:

info:
  version: 1.0.0
  description: UPF configuration

configuration:
  # debugLevel: panic|fatal|error|warn|info|debug|trace
  debugLevel: info

  pfcp:
    - addr: 127.0.0.8

  gtpu:
    - addr: 127.0.0.8
    

  apn_list:
    - apn: internet
      cidr: 60.60.0.0/24

~/free5gc/config/smfcfg.conf :

pfcp:
    addr: 127.0.0.1
  userplane_information:
    up_nodes:
      gNB1:
        type: AN
        an_ip: 192.188.2.3
      UPF:
        type: UPF
        node_id: 127.0.0.8
        up_resource_ip: 192.188.2.2

    links:
      - A: gNB1
        B: UPF
  ue_subnet: 60.60.0.0/16
  nrfUri: http://localhost:29510

UPF machine log:

sudo -E ./bin/free5gc-upfd 
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/src/upf_init.c:164 UpfInit() Config: /home/andrew/free5gc/src/upf/build/config/upfcfg.yaml  UPF=Util
INFO[2020-09-06T23:29:03-07:00] Set log level: info                           UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/src/up/up_path.c:40 UpRouteInit() APN routes added, main routing table:  UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:202 KnetPrintRoutes() DstIp               Gateway        Iface     Priority RtProto   Type         UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:237 KnetPrintRoutes() 0.0.0.0 /0          192.168.5.1    eno1      100      dhcp      unicast      UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:237 KnetPrintRoutes() 10.100.200.0 /24    0.0.0.0        br-dd2450d7d8c10        kernel    unicast      UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:237 KnetPrintRoutes() 60.60.0.0 /24       0.0.0.0        upfgtp0   0        static    unicast      UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:237 KnetPrintRoutes() 169.254.0.0 /16     0.0.0.0        eno1      1000     boot      unicast      UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:237 KnetPrintRoutes() 172.17.0.0 /16      0.0.0.0        docker0   0        kernel    unicast      UPF=Util
INFO[2020-09-06T23:29:03-07:00] /home/andrew/free5gc/src/upf/lib/knet/src/route.c:237 KnetPrintRoutes() 192.168.5.0 /24     0.0.0.0        eno1      100      kernel    unicast      UPF=Util

free5GC · September 8, 2020, 5:46am

It seems that this is not the connection failure error but cannot find the function definition.
Is there file n3_setup_test.go which define function connectToUpf in the same folder as registration_test.go?

github.com

free5gc/free5gc/blob/8c7f82f5288d3973a18a4f5edf22274c4920dc97/src/test/registration_test.go#L109


func TestRegistration(t *testing.T) {
	var n int
	var sendMsg []byte
	var recvMsg = make([]byte, 2048)

	// RAN connect to AMF
	conn, err := conntectToAmf("127.0.0.1", "127.0.0.1", 38412, 9487)
	assert.Nil(t, err)

	// RAN connect to UPF
	upfConn, err := connectToUpf(ranIpAddr, "10.200.200.102", 2152, 2152)
	assert.Nil(t, err)

	// send NGSetupRequest Msg
	sendMsg, err = test.GetNGSetupRequest([]byte("\x00\x01\x02"), 24, "free5gc")
	assert.Nil(t, err)
	_, err = conn.Write(sendMsg)
	assert.Nil(t, err)

	// receive NGSetupResponse Msg
	n, err = conn.Read(recvMsg)

github.com

free5gc/free5gc/blob/8c7f82f5288d3973a18a4f5edf22274c4920dc97/src/test/n3_setup_test.go#L8


package test_test

import (
	"fmt"
	"net"
)

func connectToUpf(enbIP, upfIP string, gnbPort, upfPort int) (*net.UDPConn, error) {
	upfAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", upfIP, upfPort))
	if err != nil {
		return nil, err
	}
	gnbAddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", enbIP, gnbPort))
	if err != nil {
		return nil, err
	}
	return net.DialUDP("udp", gnbAddr, upfAddr)
}

chliny2016 · December 29, 2020, 6:30am

Thanks a lot for your reply free5GC. I just find out that there is no n3_setup_test.go in the same folder, I added it in, and the issue is solved. Pls close this issue.

free5GC · December 26, 2020, 2:10pm

We think it is always a good idea to share the problem anyone encounter and the solution to solve it even is solve by themselves on forum so that if someone meet the same problems, they can reference to the previous one. How do you think?

chliny2016 · December 22, 2020, 5:18pm

Sure, agree with you.

limixue · September 14, 2020, 7:56am

Hello, I would like to ask how to deploy Free 5GC distributedly?

limixue · September 28, 2020, 9:14am

Hello, I would like to ask, how to deploy Free 5GC distributedly? It is convenient to tell, I want to implement it on VMware.