[DERBY-5261] NetworkServerControl prints usage message twice on some errors

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 10.8.1.2
• Component/s: Network Server
• Labels: derby_triage10_9
• Urgency: Low
• Issue & fix info: Newcomer, Repro attached
• Assignee: INDIKA KUMARA
• Reporter: Knut Anders Hatlen
• Created: 06/Jun/11 08:18
• Updated: 21/Aug/17 12:40

Description

If you invoke NetworkServerControl with an invalid command, the usage message will be printed twice.

$ java -jar derbynet.jar abc
Mon Jun 06 10:14:25 CEST 2011 : Command abc is unknown.
Usage: NetworkServerControl <commands>
Commands:
start [-h <host>] [-p <portnumber>] [-noSecurityManager] [-ssl <sslmode>]
shutdown [-h <host>][-p <portnumber>] [-ssl <sslmode>] [-user <username>] [-password <password>]
ping [-h <host>][-p <portnumber>] [-ssl <sslmode>]
sysinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
runtimeinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
logconnections

{on|off} [-h <host>][-p <portnumber>] [-ssl <sslmode>]
maxthreads <max>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
timeslice <milliseconds>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
trace {on|off}

[-s <session id>][-h <host>][-p <portnumber>] [-ssl <sslmode>]
tracedirectory <traceDirectory>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
Mon Jun 06 10:14:25 CEST 2011 : No command given.
Usage: NetworkServerControl <commands>
Commands:
start [-h <host>] [-p <portnumber>] [-noSecurityManager] [-ssl <sslmode>]
shutdown [-h <host>][-p <portnumber>] [-ssl <sslmode>] [-user <username>] [-password <password>]
ping [-h <host>][-p <portnumber>] [-ssl <sslmode>]
sysinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
runtimeinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
logconnections

{on|off} [-h <host>][-p <portnumber>] [-ssl <sslmode>]
maxthreads <max>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
timeslice <milliseconds>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
trace {on|off}

[-s <session id>][-h <host>][-p <portnumber>] [-ssl <sslmode>]
tracedirectory <traceDirectory>[-h <host>][-p <portnumber>] [-ssl <sslmode>]

Printing it once should be enough.

The same problem is seen if you don't specify a required argument for an option. For example "java -jar derbynet start -p" (no port number).

Issue Links

• relates to: DERBY-4795 Starting network server with -ssl turns SSL off