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How to resolve the "Communication link broken" and "Invalid HTTP headers - NETWORK I/O ERROR" error when setting up server only SSL with Data Virtualization ODBC Drivers

Question & Answer


Question

When trying to connect to a SSL enabled port using the Rocket ODBC drivers, the error "Communication link broken" is displayed on the driver and cannot connect to the server.

Error Message

Invalid HTTP headers - NETWORK I/O ERROR

Cause

The appropriate ODBC driver parameters needed for SSL are not set in the driver.

Answer

The below parameters need to be set under the Advanced option on the ODBC Driver Setup using the ODBC Data Source Administrator for the Data Virtualization ODBC driver

Encryption Method should be set to the appropriate TLS version. The value TLS1 means the data that is exchanged is encrypted by using the TLS1 version, TLS1.1 (TLS version 1.1), TLS1.2 (TLS version 1.2) of the SSL protocol. The value SSL3 means the data that is exchanged is encrypted by using the SSL3 version of the SSL protocol.

Validate Server Certificate should be set to No to turn off the validation of the security certificate of the server as part of the server only SSL authentication handshake.

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Document Information

Modified date:
24 July 2020

UID

ibm16220807