--check-config misses misconfigured "webserver" configuration option

[egon1024]

• Program: dnsdist
• Issue type: Bug report

Short description

When running dnsdist (1.3.3-1) with --check-config a specific config error is not caught

Environment

• Operating system: Ubuntu
• Software version: Xenial (16.04)
• Software source: PowerDNS repository

Steps to reproduce

1. Install dnsdist 1.3.3-1
2. Add this line to a config file: webserver("127.0.0.6}:1234", "api_password", "api_key")
3. Run dnsdist with --check-config against the config file and note that it does not report an error (the } between the IP address and the : is invalid, and is reported correctly when starting dnsdist)

Expected behaviour

An error in the configuration to be reported

Actual behaviour

No error is reported

root@ubuntu1604:~# /usr/bin/dnsdist --check-config -C /tmp/tmpdd.conf 
Configuration '/tmp/tmpdd.conf' OK!

[egon1024]

Excellent - thank you @rgacogne :)