Charles E. Rolke created PROTON-2313:
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Summary: [proton-c] Connection to unresolvable address returns
retry instead of failure
Key: PROTON-2313
URL: https://issues.apache.org/jira/browse/PROTON-2313
Project: Qpid Proton
Issue Type: Bug
Components: proton-c
Affects Versions: proton-c-0.33.0
Reporter: Charles E. Rolke
A qpid-dispatch self test tries to open a connector (outgoing connection) to an
unresolvable address.
[https://github.com/apache/qpid-dispatch/blob/0634a070aa6f902bf5b6f9537a5406e4cfc5a0d5/tests/system_tests_bad_configuration.py#L105]
The expectation is that proton will return a proton:io error. This does not
appear to be a regression as the issue exists in 0.33.0.
{code:java}
Fedora 31 64-bit bare metal
Proton git branch master @ e4c179855. Dispatch git branch master @ 0634a070
2020-12-21 11:04:51.294685 -0500 SERVER (trace) [C1] Connecting to
unresolvable.host.name:amqp (/home/chug/git/qpid-dispatch/src/server.c:1204)
2020-12-21 11:04:51.555518 -0500 SERVER (info) [C1] Connection to
unresolvable.host.name:amqp failed: proton:io Name or service not known -
connect to unresolvable.host.name:5672
(/home/chug/git/qpid-dispatch/src/server.c:1065)
{code}
In some cases proton never returns an error but retries indefinitely.
{code:java}
Host: Fedora 32 x86_64
VM: whatever one gets from qpid-dispatch/dockerfiles/Dockerfile-fedora
in VM uname -a shows: Linux 879605af38a6 5.9.14-100.fc32.x86_64 #1 SMP Fri
Dec 11 14:30:38 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
2020-12-21 15:53:46.738685 +0000 SERVER (trace) [C1] Connecting to
unresolvable.host.name:amqp (/main/qpid-dispatch/src/server.c:1204)
2020-12-21 15:53:46.919237 +0000 SERVER (info) [C1] Connection to
unresolvable.host.name:amqp failed: proton:io Temporary failure in name
resolution - connect to unresolvable.host.name:5672
(/main/qpid-dispatch/src/server.c:1065)
2020-12-21 15:53:51.919149 +0000 SERVER (trace) [C2] Connecting to
unresolvable.host.name:amqp (/main/qpid-dispatch/src/server.c:1204)
2020-12-21 15:53:52.107100 +0000 SERVER (info) [C2] Connection to
unresolvable.host.name:amqp failed: proton:io Temporary failure in name
resolution - connect to unresolvable.host.name:5672
(/main/qpid-dispatch/src/server.c:1065)
2020-12-21 15:53:57.108089 +0000 SERVER (trace) [C3] Connecting to
unresolvable.host.name:amqp (/main/qpid-dispatch/src/server.c:1204)
2020-12-21 15:53:57.247889 +0000 SERVER (info) [C3] Connection to
unresolvable.host.name:amqp failed: proton:io Temporary failure in name
resolution - connect to unresolvable.host.name:5672
(/main/qpid-dispatch/src/server.c:1065)
{code}
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