WindowsEnabler clients fail to connect to WindowsEnabler Daemon after keep-alive has been enabled

Symptoms

WindowsEnabler clients cannot connect to WindowsEnabler/400 daemon when the daemon is started with KEEPALIVE enabled. In the WindowsEnabler client log you see the following error:
Host closed connection.
Error code: 0

In WECM job log you see the following error:

MCH1210 Escape 40 16/05/19 09:20:46.496964 WECM WINPGM3 *STMT WECM WINPGM3 *STMT
From module . . . . . . . . : WECM
From procedure . . . . . . : ReceiveFromClient
Statement . . . . . . . . . : 13
To module . . . . . . . . . : WECM
To procedure . . . . . . . : ReceiveFromClient
Statement . . . . . . . . . : 13
Message . . . . : Receiver value too small to hold result.

In WECMD job log you see the following error:

CPF9898  Diagnostic       40  16/05/19 09:19:20.827433 WECMD    WINPGM3   *STMT  QCMD    QSYS    01C8
                   From module . . . . . . . . :  MESSAGES                           
                   From procedure . . . . . . :  Diagnostic                          
                   Statement . . . . . . . . . :  4                              
                   Message . . . . :  Bind of socket failed. Errno: 3420.                   
                   Cause . . . . . :  This message is used by application programs as a general escape                                       message.                                      

Cause

You are using a keep-alive value that is larger than 16 (minutes). WindowsEnabler/400 does not support a keep-alive setting larger than 16.

Resolution

Use a keep-alive setting of 16 or lower. For example

WINPGM3\STRWETCP KEEPALIVE( 2 )