commit a9fee222aca8bc921953cfe823d54b4a435adb70 Author: Nick Mathewson <nickm@torproject.org> Date: Wed Jun 17 12:02:58 2020 -0400 Control-spec.txt: add several circuit purposes This patch adds and documents the purposes HS_VANGAURD, PATH_BIAS_TESTING, and CIRCUIT_PADDING. Closes ticket 33640. --- control-spec.txt | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/control-spec.txt b/control-spec.txt index 548edce..6a7a8bf 100644 --- a/control-spec.txt +++ b/control-spec.txt @@ -2134,7 +2134,9 @@ Purpose = "GENERAL" / "HS_CLIENT_INTRO" / "HS_CLIENT_REND" / "HS_SERVICE_INTRO" / "HS_SERVICE_REND" / "TESTING" / - "CONTROLLER" / "MEASURE_TIMEOUT" + "CONTROLLER" / "MEASURE_TIMEOUT" / + "HS_VANGUARDS" / "PATH_BIAS_TESTING" / + "CIRCUIT_PADDING" HSState = "HSCI_CONNECTING" / "HSCI_INTRO_SENT" / "HSCI_DONE" / "HSCR_CONNECTING" / "HSCR_ESTABLISHED_IDLE" / @@ -2183,6 +2185,12 @@ TESTING (reachability-testing circuit; carries no traffic) CONTROLLER (circuit built by a controller) MEASURE_TIMEOUT (circuit being kept around to see how long it takes) + HS_VANGUARDS (circuit created ahead of time when using + HS vanguards, and later repurposed as needed) + PATH_BIAS_TESTING (circuit used to probe whether our circuits are + being deliberately closed by an attacker) + CIRCUIT_PADDING (circuit that is being held open to disguise its + true close time) The "HS_STATE" field is provided only for hidden-service circuits, and only in versions 0.2.3.11-alpha and later. Clients MUST accept