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95670937c3
This was happening when the remote response arrives before the local response is made and thus the local response needs to be send with the ACK following. The problem was that we ACK was sent before the response which is not allowed and resulted in the session being aborted by the introducee. This was happening, because recursion is hard ;) The fix is only restarting another protocol engine to send the ACK after the first run has been completed. An integration test was added to prevent such regression in the future and to test this code path.
Briar is a messaging app designed for activists, journalists, and anyone else who needs a safe, easy and robust way to communicate. Unlike traditional messaging tools such as email, Twitter or Telegram, Briar doesn't rely on a central server - messages are synchronized directly between the users' devices. If the Internet's down, Briar can sync via Bluetooth or Wi-Fi, keeping the information flowing in a crisis. If the Internet's up, Briar can sync via the Tor network, protecting users and their relationships from surveillance.