[QPID-7949] [c++ client]msg::Connection.open() never return when FQDN url is provided and broker not started

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: qpid-cpp-1.36.0
• Component/s: C++ Client

Environment

Debian Jessie 7 (64 bits)
We are using the debian package provided here
https://launchpad.net/~qpid/+archive/ubuntu/testing/+packages
Publishing details
Published on 2017-05-19
Changelog
qpid-cpp (1.36.0-1qpid+xenial1) xenial; urgency=medium

• Assignee: Unassigned
• Reporter: Gerald Guillaume
• Created: 03/Oct/17 10:23
• Updated: 03/Oct/17 10:27

Description

Test 1

The conditions are :

• the broker is not started.
• the IP address is set in the url.
• the IP is reachable by ping
  Output : the open() function exit and isOpen() returns false.
  Result : => Expected behavior
  source code:

  msg::Connection *connection = new msg::Connection("amqp:tcp:166.99.224.88:5672", "{protocol: amqp1.0}");
  connection->setOption("transport", "tcp");
  connection->setOption("reconnect", false);
  connection->open();
  printf("connection %s to AMQP broker \n",(connection->isOpen()) ? "OK" : "KO");
  

  logs are

  2017-10-03 08:54:00 [Messaging] debug Protocol defaults:
  2017-10-03 08:57:31 [Messaging] debug Trying versions amqp1.0
  2017-10-03 08:57:31 [Messaging] debug Driver started
  2017-10-03 08:57:31 [Messaging] debug tcp:166.99.224.88:5672 Connecting ...
  2017-10-03 08:57:31 [Client] debug Set TCP_NODELAY
  2017-10-03 08:57:31 [Messaging] debug Failed to connect: Connection refused
  connection KO to AMQP broker
  

Test 2

The conditions are :

• the broker is not started.
• the FQDN address is set in the url.
• the FQDN is reachable by ping
  Output : the open() function never exit, and EpollPoller.cpp:357 complains "No such file or directory".

Result : => Failed

ping <FQDN>
PING <FQDN> (166.99.224.88) 56(84) bytes of data.
64 bytes from 166.99.224.88: icmp_seq=1 ttl=128 time=2.01 ms
64 bytes from 166.99.224.88: icmp_seq=2 ttl=128 time=1.19 ms

source code:

msg::Connection *connection = new msg::Connection("amqp:tcp:<FQDN>:5672", "{protocol: amqp1.0}");
connection->setOption("transport", "tcp");
connection->setOption("reconnect", false);
connection->open();
printf("connection %s to AMQP broker \n",(connection->isOpen()) ? "OK" : "KO");

logs are

2017-10-03 08:38:04 [Messaging] debug Protocol defaults: 
2017-10-03 08:38:05 [Messaging] debug Trying versions amqp1.0
2017-10-03 08:38:05 [Messaging] debug Driver started
2017-10-03 08:38:05 [Messaging] debug tcp:<FQDN brokername>:5672 Connecting ...
2017-10-03 08:50:49 [Client] debug Set TCP_NODELAY
2017-10-03 08:50:49 [System] debug Ignored socket connect error: Connection refused
2017-10-03 08:50:49 [System] debug Exception constructed: Network is unreachable: <FQDN>:5672 (/usr/src/packages/BUILD/src/qpid/sys/posix/BSDSocket.cpp:161)
2017-10-03 08:50:49 [System] debug Ignored socket connect exception: Network is unreachable: <FQDN>:5672 (/usr/src/packages/BUILD/src/qpid/sys/posix/BSDSocket.cpp:161)
2017-10-03 08:50:49 [System] debug Exception constructed: No such file or directory (/usr/src/packages/BUILD/src/qpid/sys/epoll/EpollPoller.cpp:357)