CA WA Agent SCP Job fails with com.jscape.inet.ssh.protocol.v2.marshaling.PacketCodec$InvalidMacException

Products

• CA Workload Automation AE - Business Agents (AutoSys)
• CA Workload Automation AE - Scheduler (AutoSys)
• Workload Automation Agent

Issue/Introduction

SCP job type fails with the following message:

02/12/20XX 15:19:09.991-0500 1 FtpPlugin.SCP Transfer thread for 11111.100000_2/
XXXXXX/MAIN.CybSFTPHandler.run[:979] - com.jscape.inet.sftp.SftpException:
com.jscape.inet.ssh.protocol.v2.marshaling.PacketCodec$InvalidMacException
at com.jscape.inet.sftp.SftpException.wrap(Unknown Source)
at com.jscape.inet.sftp.Sftp.a(Unknown Source)
.......
.......
Caused by: com.jscape.inet.ssh.protocol.v2.marshaling.PacketCodec$InvalidMacException: null
at com.jscape.inet.ssh.protocol.v2.marshaling.PacketCodec.c(Unknown Source)
at com.jscape.inet.ssh.protocol.v2.marshaling.PacketCodec.read(Unknown Source)
at com.jscape.inet.ssh.protocol.v2.marshaling.PacketCodec.read(Unknown Source)
at com.jscape.util.l.a.fb.read(Unknown Source)

The "null" is not a valid value, it may mean that the MAC handshaking is failing, possibly due to a timeout.
 

Environment

CA WA Agent 12.x
OS: Any

Cause

The handshaking failure may be due to a read timeout.
The connection timeout can been increased.

Resolution

To increase the read timeout to 90 seconds (for example), set the following in the agentparm.txt file and restart the agent:

ftp.scp.sshd.timeout=90000