Tang doesn't close socket if error occured?

[MAH69IK]

An unpleasant surprise was the inability to manage services via systemd and the high workload of the server. When trying to do something with the services, I got the error: Failed to load daemon: No buffer space available.

It turned out that there are 77 334 systemd units in the system of the form tangd@53241-<local ip>:80-<remote ip>:49204.service.

# systemctl list-units --all | grep tang
...
● tangd@9993-<local ip>:80-<remote ip>:41608.service                                         loaded    failed   failed    Tang Server
● tangd@9994-<local ip>:80-<remote ip>:41642.service                                         loaded    failed   failed    Tang Server
● tangd@9995-<local ip>:80-<remote ip>:41648.service                                         loaded    failed   failed    Tang Server
● tangd@9996-<local ip>:80-<remote ip>:41654.service                                         loaded    failed   failed    Tang Server
● tangd@9997-<local ip>:80-<remote ip>:41664.service                                         loaded    failed   failed    Tang Server
● tangd@9998-<local ip>:80-<remote ip>:41670.service                                         loaded    failed   failed    Tang Server
...

If I check log via journalctl -xeu tangd@63-...:62934.service I see this:

May 04 16:44:16 test-node-2 tangd[29047]: HTTP Parsing Error: invalid HTTP method

[sarroutbi]

Hello @MAH69IK

Can you please provide next information?:

• tang version
• operating system
• steps to reproduce the issue

I have tested in Fedora and RHEL 9.1, with latest versions of tang in both of them, and I don't see this issue. I am starting/stopping tang by using:

#systemctl enable --now tangd.socket
#systemctl disable --now tangd.socket

[MAH69IK]

Hello!

OS: Debian 10
Tang: 7-1+deb10u1 (latest for this OS)

Steps to reproduce: well, I just started tang (tangd.socket) and wait few days.

[sarroutbi]

Hello @MAH69IK . Could you please try downgroading libhttp-parser to see if that helps, as described in #79?