Error 4006 on Altia client

Problem description:

The C code spawns several threads, each of which uses a socket connection to another machine generating data for Altia to display. When I attempt send data to Altia from the main thread (for debugging), it works fine. When I start one other thread and attempt to send data from that thread, the following appears on my console:

Client transaction failure, error 4006

Reached maximum retry count of 1. Exiting…


The program then exits.

The line of C code that generates the error is:

AtSendEvent(at_con_id, "myevent", speed);

This is the exact same line of code that works in the main thread.



Make sure you are using a multi-threaded version of the Altia API library -- like:


The standard libraries are not thread safe.


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