November 2025 - tor-dev - lists.torproject.org

What happens to my hidden service?
by Liste 29 Dec '25

29 Dec '25

Hidden service is unavailable, but tor is running. Tor's log: Dec 12 18:10:27.000 [notice] Your Guard SECxFreeBSD64 ($D7DB8E82604F806766FC3F80213CF719A0481D0B) is failing more circuits than usual. Most likely this means the Tor network is overloaded. Success counts are 199/285. Use counts are 101/101. 253 circuits completed, 0 were unusable, 54 collapsed, and 15 timed out. For reference, your timeout cutoff is 60 seconds. is failing a very large amount of circuits. Most likely this means the Tor network is overloaded, but it could also mean an attack against you or potentially the guard itself. Dec 12 18:15:53.000 [warn] Giving up launching first hop of circuit to rendezvous point [scrubbed] for service xxxxxxxxxxxxxxx. Dec 11 13:08:59.000 [notice] We'd like to launch a circuit to handle a connection, but we already have 32 general-purpose client circuits pending. Waiting until some finish. [268 similar message(s) suppressed in last 600 seconds] Dec 11 13:43:12.000 [warn] onion_skin_client_handshake failed. Dec 11 13:43:12.000 [warn] circuit_finish_handshake failed. Dec 11 13:43:12.000 [warn] connection_edge_process_relay_cell (at origin) failed. Dec 11 00:34:57.000 [warn] Giving up launching first hop of circuit to rendezvous point [scrubbed] for service .... Dec 10 10:09:01.000 [warn] rend_service_introduce(): Bug: Internal error: Got an INTRODUCE2 cell on an intro circ (for service "...") with no corresponding rend_intro_point_t. Dec 10 10:09:03.000 [warn] rend_service_introduce(): Bug: Internal error: Got an INTRODUCE2 cell on an intro circ (for service "...") with no corresponding rend_intro_point_t. Dec 10 10:09:04.000 [warn] rend_service_introduce(): Bug: Internal error: Got an INTRODUCE2 cell on an intro circ (for service "...") with no corresponding rend_intro_point_t. Dec 10 12:42:19.000 [warn] rend_service_introduce(): Bug: Internal error: Got an INTRODUCE2 cell on an intro circ (for service "...") with no corresponding rend_intro_point_t.

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Merging "Approved" Arti MRs
by Neel Chauhan 07 Nov '25

07 Nov '25

Hi, As you may or may not know, I have two Arti MRs which are approved but not merged: https://gitlab.torproject.org/tpo/core/arti/-/merge_requests/3432 https://gitlab.torproject.org/tpo/core/arti/-/merge_requests/3439 Could those two MRs please be merged? I hope you have a great day/evening. Best, Neel Chauhan

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New Contributor Interested in Tor Development and Network Security
by TUSHAR KANT 01 Nov '25

01 Nov '25

Hello everyone, I’m *Tushar Kant, a third year undergraduate student at Indian Institute of Technology Jodhpur, India* passionate about *cryptography, network security, and privacy-preserving technologies*. I’ve been deeply interested in understanding how the *Tor network* achieves anonymity through *onion routing* and its large-scale relay-to-relay architecture that forms the backbone of user privacy on the internet. My technical background includes a solid foundation in *cryptography, encryption/decryption, hashing*, and general *network security concepts*. I’m proficient in *C++* and *Python*, with experience in *backend development*, which I plan to leverage in contributing to Tor’s core or related components. I recently joined the Tor Forum, subscribed to the *tor-dev mailing list*, and am exploring the repositories to get familiar with the codebase and contribution workflow. While I aim to contribute consistently to Tor, I am also looking forward to potentially being part of *GSoC 2026* with The Tor Project if the opportunity aligns. I would greatly appreciate any guidance on where to begin or which areas of the project would be most suitable for someone with my skill set. Looking forward to collaborating and learning from this community. Best regards, *Tushar Kant*

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