Introducing a client library for 0-RTT Converter


0-RTT Converter is a MPTCP deployment option created by Tessares. It has been implemented for five telecom operators to deliver higher broadband speeds for remote residential customers. Hence, the first devices that embed 0-RTT Converter client are residential CPEs from several vendors.

In order to unlock new opportunities to improve Internet experience elsewhere than houses, our team has released a client library allowing other Linux-based connected devices to interact with the Transport Converter (the backend side).

As MPTCP has been selected by 3GPP to be the protocol for ATSSS service in emerging 5G architecture, this library could enable the User Equipment (Name given by 3GPP for the client side) to seamlessly switch between 3GPP networks (4G/5G) and unlicensed networks such as Wi-Fi. It could also select the access network with the lowest latency to send / receive data packets.

Click the link below to download the library. This is a work in progress and code contributions are more than welcome :

UPDATE July 2019 :

You can also find a Wireshark dissector plugin for the 0-RTT TCP Convert Internet draft at Again, this is a work in progress and code contributions are more than welcome.

Contributors from Tessares: Grégory Vander Schueren, Gregory Detal & Olivier Bonaventure
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