How do I insert timeouts in the server responses?

You can define 2 types of timeout in NeoLoad :

These settings may be edited in the <NeoLoad>/conf/, file in the Runtime section.

You simply need to change the values for the runtime.connection.timeout and keys. The values are expressed in milliseconds (for example, 30000 for 30 sec.). Settings these key values to 0 will create infinite timeouts (default behavior if no values inserted).