TN5250 SSL/TLS Connection Error: Could not create socket

  • 7021794
  • 30-Sep-2009
  • 02-Mar-2018

Environment

EXTRA! X-treme version 9.1 or higher

Situation

  • Your TN5250 SSL/TLS connection fails with a “Could not create socket” error.
  • You have “Verify server identity” selected in Settings->Connection->General.

Resolution

In the Connection->General dialog box, ensure that the value entered in the “Host alias / IP address” field matches the name of the host system that you are connecting to.

Cause

Beginning in EXTRA! X-treme 9.1, Attachmate changed the source for host name when "Verify server identity" is requested for TN5250 SSL/TLS connections.

Prior to version 9.1, EXTRA! X-treme compared the host name contained in the server certificate with the information provided in the "Host name" field of the Connection->General dialog box.

Beginning in EXTRA! X-treme 9.1, EXTRA! X-treme compares the host name contained in the server certificate with the information provided in the “Host alias / IP address” field of the Connection->General dialog box.

Additional Information

Legacy KB ID

This article was originally published as Attachmate Technical Note 2469.