NOTE UDT has been removed from TouchDesigner 2020 Official builds and later. UDT is not recommended in older TouchDesigner versions due to some timing bugs.
UDT (UDP-based Data Transfer Protocol) was added to TouchDesigner as an alternative to UDP, which is not reliable because packet loss is not recoverable in UDP. UDT is fast and recovers from lost packets. It is also faster and more immediate than TCP/IP.
UDT is a reliable UDP-based application level data transport protocol for distributed data intensive applications over wide area high-speed networks. UDT uses UDP to transfer bulk data with its own reliability control and congestion control mechanisms. The new protocol can transfer data at a much higher speed than TCP does. UDT is also a highly configurable framework that can accommodate various congestion control algorithms.
UDT License Agreement
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