Service killed with suspected concurrent requests

[syntrust]

2025/04/26 21:19:36 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:36] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:26608: write: broken pipe                                                                                        │
2025/04/26 21:19:36 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:36] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:19776: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:33774: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:17822: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:46120: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:23556: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:46012: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:21104: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
ERRO[2025-04-26 21:19:37] Cannot write error page: write tcp 10.110.0.3:880->10.110.0.5:31520: write: broken pipe                                                                                        │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
2025/04/26 21:19:37 http: superfluous response.WriteHeader call from main.respondWithErrorPage (protocol.go:373)                                                                                         │
./run_w3link.sh: line 4: 1566519 Killed                  ./server ...

[syntrust]

Grafana shows the link https://0xf21ad682d61d08e1a028f1dd7ce4296816ffdf3b.sep.w3link.io/ has been accessed 8056 times in the last 24 hours, which could be in a more concentrated period. The timestamps of the transactions can confirm the timestamps in the log.

The crash could be related to a surge in concurrent requests due to the log.
We may need a request limiter to handle massive concurrencies, but superfluous response.WriteHeader call from main.respondWithErrorPage indicates another issue that also needs to be fixed.