https://bz.apache.org/bugzilla/show_bug.cgi?id=63217
Bug ID: 63217
Summary: JMeter's Telnet is non-compliant
Product: JMeter
Version: 5.1
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Main
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: JMETER_5.2
The Telnet implementation in jMeter is broken.
It doesn't recognize the Telnet command sequence DO NEW-ENVIRON (defined by RFC
1572, which was published over 25 years ago). But what's actually wrong is that
by throwing an exception, this Telnet implementation is in violation of the
original Telnet specification, RFC 854 from 1983, which clearly states:
Thus, all hosts may implement their
TELNET processes to be totally unaware of options that are not
supported, simply returning a rejection to (i.e., refusing) any
option request that cannot be understood.
Telnet implementations must reject any options they don't recognize, and
continue. If the peer that attempted to negotiate the option absolutely
requires it, then it's that peer's responsibility to end the conversation.
In short, JMeter's Telnet is non-compliant
Error:
2019-02-22 15:21:38,495 INFO o.a.j.e.StandardJMeterEngine: Starting
ThreadGroup: 1 : Thread Group - Micro Focus LOGIN
2019-02-22 15:21:38,496 INFO o.a.j.e.StandardJMeterEngine: Starting 1 threads
for group Thread Group - Micro Focus LOGIN.
2019-02-22 15:21:38,496 INFO o.a.j.e.StandardJMeterEngine: Thread will continue
on error
2019-02-22 15:21:38,496 INFO o.a.j.t.ThreadGroup: Starting thread group...
number=1 threads=1 ramp-up=5 perThread=5000.0 delayedStart=false
2019-02-22 15:21:38,496 INFO o.a.j.t.ThreadGroup: Started thread group number 1
2019-02-22 15:21:38,496 INFO o.a.j.e.StandardJMeterEngine: All thread groups
have been started
2019-02-22 15:21:38,497 INFO o.a.j.t.JMeterThread: Thread started: Thread Group
- Micro Focus LOGIN 1-1
2019-02-22 15:21:38,505 ERROR o.a.j.JMeter: Uncaught exception:
java.security.InvalidParameterException: Unknown telnet command type: FD 27
at
com.bytezone.dm3270.telnet.TelnetCommand.<init>(TelnetCommand.java:83)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.streams.TelnetListener.processTelnetCommand(TelnetListener.java:129)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.telnet.TelnetProcessor.listen(TelnetProcessor.java:105)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.streams.TelnetListener.listen(TelnetListener.java:55)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.streams.TerminalServer.run(TerminalServer.java:71)
~[dm3270-lib-0.6.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_162]
2019-02-22 15:22:38,499 WARN c.b.j.r.s.RTESampler: Timeout error
java.util.concurrent.TimeoutException: Timeout waiting for emulator to be
unlocked after 60000 millis. Check if Timeout values of the 'Wait for'
components are greater than Stable time or Silent interval.
at
com.blazemeter.jmeter.rte.core.listener.ConditionWaiter.await(ConditionWaiter.java:50)
~[jmeter-bzm-rte-1.0.4.jar:?]
at
com.blazemeter.jmeter.rte.protocols.tn3270.Tn3270Client.connect(Tn3270Client.java:130)
~[jmeter-bzm-rte-1.0.4.jar:?]
at
com.blazemeter.jmeter.rte.sampler.RTESampler.buildClient(RTESampler.java:484)
[jmeter-bzm-rte-1.0.4.jar:?]
at
com.blazemeter.jmeter.rte.sampler.RTESampler.sample(RTESampler.java:420)
[jmeter-bzm-rte-1.0.4.jar:?]
at
org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:622)
[ApacheJMeter_core.jar:5.1 r1853635]
at
org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:546)
[ApacheJMeter_core.jar:5.1 r1853635]
at
org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:486)
[ApacheJMeter_core.jar:5.1 r1853635]
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:253)
[ApacheJMeter_core.jar:5.1 r1853635]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_162]
2019-02-22 15:22:38,504 ERROR o.a.j.JMeter: Uncaught exception:
java.security.InvalidParameterException: Unknown telnet command type: FD 27
at
com.bytezone.dm3270.telnet.TelnetCommand.<init>(TelnetCommand.java:83)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.streams.TelnetListener.processTelnetCommand(TelnetListener.java:129)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.telnet.TelnetProcessor.listen(TelnetProcessor.java:105)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.streams.TelnetListener.listen(TelnetListener.java:55)
~[dm3270-lib-0.6.jar:?]
at
com.bytezone.dm3270.streams.TerminalServer.run(TerminalServer.java:71)
~[dm3270-lib-0.6.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_162]
2019-02-22 15:23:38,502 WARN c.b.j.r.s.RTESampler: Timeout error
java.util.concurrent.TimeoutException: Timeout waiting for emulator to be
unlocked after 60000 millis. Check if Timeout values of the 'Wait for'
components are greater than Stable time or Silent
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