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Links

• Link to discussion on Developer Forum: https://community.openpbs.org/t/rpp-retry-and-rpp-highwater-deprecated/2419

Overview

The TPP layer has been modified to now completely rely on the sliding window techniques of the underlying TCP protocol. Redundant TPP code that dealt with keeping track of packet acknowledgements and therefore re-transmissions (controlled by rpp_retry) have been removed. The overall flow was controlled by rpp_highwater, but since TCP has its own flow control, this code was not functional, and has been removed as well.

Technical Details

• The rpp_retry attribute of the server object is deprecated.

• The rpp_highwater attribute of the server object is deprecated.
• Attempting to set these values will not result in an error. These values, if set, will be silently ignored. The TPP layer will simply use underlying TCP protocols for reliable transmission of data.
• In a future release, these attributes will be removed and an attempt to set their values will result in error.

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