Test case failure: ntcf_system.t test case 15

[mattrm456]

[ W ][ 24MAR2023_03:39:04.415 ][ main ][ ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
Running test case 15
[ W ][ 24MAR2023_03:39:05.117 ][ main ][ ntcf_system.t.cpp:5519 ]: Testing driver EPOLL (static)
[ W ][ 24MAR2023_03:39:05.117 ][ main ][ ntcf_system.t.cpp:7280 ]: ETIMEDOUT (x5)
[ F ][ 24MAR2023_03:39:05.134 ][ main ][ ntcf_system.t.cpp:7333 ]: Assertion failed: connectResult.event().context().error() == ntsa::Error(ntsa::Error::e_CONNECTION_TIMEOUT)
Found: Connection refused (ECONNREFUSED) (connectResult.event().context().error())
Expected: Connection timed out (ETIMEDOUT) (ntsa::Error(ntsa::Error::e_CONNECTION_TIMEOUT))
Aborted (core dumped)

[smtrfnv]

For the reference: I was not able to reproduce the issue on my setup (Windows laptop with WSL2-Ubuntu 22.04). Tried both release and debug builds.

[rdilipk]

This was originally reported by @michihenning. Perhaps he can help?

[michihenning]

This is still happening for me. Vanilla build using Ubuntu 20.04 and gcc 9.4.

Is there anything I can do to help track this down?

[smtrfnv]

I've spent some time and managed to reproduce it on my system. It just happens sporadically.

[michihenning]

Nice, glad to hear it!

Please let me know if there is anything I can do on my end to help nail this down.

[smtrfnv]

Nice, glad to hear it!

Please let me know if there is anything I can do on my end to help nail this down.

Could you please share the ouptut of these two commands?
ping 192.168.100.200
traceroute 192.168.100.200

And one more thing:
Can you please change the ip address inside void concernConnectEndpoint3 (Inside ntcf_system.t.cpp) from

    ntsa::Endpoint endpoint(
        ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));

to

    ntsa::Endpoint endpoint(
        ntsa::IpEndpoint(ntsa::Ipv4Address("240.0.0.1"), 1024));

and say whether the same issue is observed?

[michihenning]

I'm running inside a Fusion VM.

$ ping 192.168.100.200
PING 192.168.100.200 (192.168.100.200) 56(84) bytes of data.
From 10.20.22.173 icmp_seq=1 Packet filtered
From 10.20.22.173 icmp_seq=2 Packet filtered
From 10.20.22.173 icmp_seq=3 Packet filtered
From 10.20.22.173 icmp_seq=4 Packet filtered

$ traceroute 192.168.100.200
traceroute to 192.168.100.200 (192.168.100.200), 30 hops max, 60 byte packets
 1  _gateway (172.16.85.2)  0.350 ms  0.251 ms  0.204 ms
 2  10.1.5.1 (10.1.5.1)  2.768 ms  2.919 ms  2.804 ms
 3  10.20.22.173 (10.20.22.173)  9.492 ms  9.469 ms  14.158 ms
 4  10.20.22.173 (10.20.22.173)  14.078 ms !X * *

With the code change to concernConnectEndpoint3, test 15 passes.

But I'm seeing other failures, not on every run.

Test case 17:

Running test case 17
[ W ][ 10MAY2023_23:50:33.525 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver EPOLL (static)
[ W ][ 10MAY2023_23:50:33.527 ][             main ][                   ntcf_system.t.cpp:7529 ]: ETIMEDOUT (x4), ECANCELED
[ W ][ 10MAY2023_23:50:34.229 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver POLL (static)
[ W ][ 10MAY2023_23:50:34.230 ][             main ][                   ntcf_system.t.cpp:7529 ]: ETIMEDOUT (x4), ECANCELED
[ F ][ 10MAY2023_23:50:34.240 ][             main ][                   ntcf_system.t.cpp:7602 ]: Unexpected connect event [ type = ERROR context = [ endpoint = 192.168.100.200:1024 attemptsRemaining = 99 error = [ code = UNREACHABLE number = 113 description = Host is unreachable (EHOSTUNREACH) ] ] ]
[ F ][ 10MAY2023_23:50:34.240 ][             main ][                   ntcf_system.t.cpp:7603 ]: Assertion false: false
Aborted (core dumped)

Test case 14:

Running test case 14
[ W ][ 10MAY2023_23:52:14.069 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver EPOLL (static)
[ W ][ 10MAY2023_23:52:14.070 ][             main ][                   ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
[ W ][ 10MAY2023_23:52:14.772 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver POLL (static)
[ W ][ 10MAY2023_23:52:14.773 ][             main ][                   ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
[ W ][ 10MAY2023_23:52:15.474 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver SELECT (static)
[ W ][ 10MAY2023_23:52:15.475 ][             main ][                   ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
[ W ][ 10MAY2023_23:52:16.175 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver EPOLL (dynamic)
[ W ][ 10MAY2023_23:52:16.176 ][             main ][                   ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
[ W ][ 10MAY2023_23:52:16.877 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver POLL (dynamic)
[ W ][ 10MAY2023_23:52:16.878 ][             main ][                   ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
[ W ][ 10MAY2023_23:52:17.579 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver SELECT (dynamic)
[ W ][ 10MAY2023_23:52:17.579 ][             main ][                   ntcf_system.t.cpp:7160 ]: ECONNREFUSED/ETIMEDOUT (x5)
Running test case 15
[ W ][ 10MAY2023_23:52:18.281 ][             main ][                   ntcf_system.t.cpp:5519 ]: Testing driver EPOLL (static)
[ W ][ 10MAY2023_23:52:18.282 ][             main ][                   ntcf_system.t.cpp:7280 ]: ETIMEDOUT (x5)
[ F ][ 10MAY2023_23:52:18.293 ][             main ][                   ntcf_system.t.cpp:7334 ]: Assertion failed: connectResult.event().context().error() == ntsa::Error(ntsa::Error::e_CONNECTION_TIMEOUT)
Found:    Connection refused (ECONNREFUSED) (connectResult.event().context().error())
Expected: Connection timed out (ETIMEDOUT) (ntsa::Error(ntsa::Error::e_CONNECTION_TIMEOUT))
Aborted (core dumped)

After making the same change to concernConnectEndpoint5 and concernConnectEndpoint7, all tests pass.

diff --git a/groups/ntc/ntcf/ntcf_system.t.cpp b/groups/ntc/ntcf/ntcf_system.t.cpp
index 40db77b..dbf0c4c 100644
--- a/groups/ntc/ntcf/ntcf_system.t.cpp
+++ b/groups/ntc/ntcf/ntcf_system.t.cpp
@@ -7301,7 +7301,8 @@ void concernConnectEndpoint3(const bsl::shared_ptr<ntci::Interface>& interface,
     // Connect the stream socket to the listener socket.
 
     ntsa::Endpoint endpoint(
-        ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));
+        //ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));
+        ntsa::IpEndpoint(ntsa::Ipv4Address("240.0.0.1"), 1024));
 
     bsl::size_t numErrors = 0;
     NTCCFG_TEST_GT(k_MAX_CONNECTION_ATTEMPTS, 0);
@@ -7549,7 +7550,8 @@ void concernConnectEndpoint5(const bsl::shared_ptr<ntci::Interface>& interface,
     // Connect the stream socket to the listener socket.
 
     ntsa::Endpoint endpoint(
-        ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));
+        //ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));
+        ntsa::IpEndpoint(ntsa::Ipv4Address("240.0.0.1"), 1024));
 
     bsl::size_t numErrors = 0;
     NTCCFG_TEST_GT(k_MAX_CONNECTION_ATTEMPTS, 0);
@@ -7832,7 +7834,8 @@ void concernConnectEndpoint7(const bsl::shared_ptr<ntci::Interface>& interface,
     // Connect the stream socket to the listener socket.
 
     ntsa::Endpoint endpoint(
-        ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));
+        //ntsa::IpEndpoint(ntsa::Ipv4Address("192.168.100.200"), 1024));
+        ntsa::IpEndpoint(ntsa::Ipv4Address("240.0.0.1"), 1024));
 
     bsl::size_t numErrors = 0;
     NTCCFG_TEST_GT(k_MAX_CONNECTION_ATTEMPTS, 0);

[smtrfnv]

@michihenning thank you for this! I'll update the PR to fix these errors

[smtrfnv]

@mattrm456 let's close it as I think with the recent changes delivered to main the issue is resolved.