NOop subcommand—Test the connection

Purpose

Use the NOop subcommand to determine whether the foreign host is still responding.

Format

Read syntax diagramSkip visual syntax diagramNOop

Parameters

There are no parameters for this subcommand.

Examples

  • If the foreign host is responding, you receive one of the following responses:
    200 OK or 200 NOOP command successful.
  • If the foreign host does not respond or is not connected, you receive appropriate error messages, such as:
    EZA1534I Control connection with ipaddr dies.
    EZA1457I You must first issue the 'OPEN' command    .

Usage

You can use the NOop command to keep a connection alive that would otherwise be disconnected if it were idle for longer than the system timeout period.