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DataWriter callback when writer queue is available for writing

Hey,

I'm have a DDS_DataWriter configured to keep history with a depth of 128. After 128 written samples, the DDS_DataWriter returns a "DDS_RETCODE_TIMEOUT" error, which is expected because the buffer is full and no DDS_DataReader has read anything from it.

Organization:

publishing moderately large (34KB) data from VxWorks DKM

We have a system consisting of a C based RTI DDS program running as a VxWorks 6.7 DKM which subscribes to and receives up to 2MB data packets and, in turn, generates approximately 34KB of data and publishes it back to the original data source.  For our current testing, the original data source comes from a Windows RTI DDS application (Java based running in Eclipse) while the target system is running on a Power PC target board.  They are connected via a 10/100 switch.

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