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better error handling

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This commit is contained in:
Alexander Jacobsen 2026-07-18 01:50:12 +02:00
parent f8dfe27c57
commit 2737945b4c
1 changed files with 8 additions and 2 deletions
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pixelflut.c
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@ -231,15 +231,21 @@ static void *worker_main(void *arg)
/* Transient back-pressure. Back off briefly so the queue /* Transient back-pressure. Back off briefly so the queue
* drains (rather than spinning on failing syscalls), then * drains (rather than spinning on failing syscalls), then
* resend the same batch - no need to repaint. */ * resend the same batch - no need to repaint. */
usleep(200); usleep(100);
continue; continue;
case ECONNREFUSED: case ECONNREFUSED:
break; /* stale ICMP on connected UDP; repaint and retry */ break; /* stale ICMP on connected UDP; repaint and retry */
case EHOSTUNREACH: /* display down / IPv6 ND unresolved */
case ENETUNREACH:
case EHOSTDOWN:
case ENETDOWN:
usleep(100000);
break;
default: default:
perror("sendmmsg"); perror("sendmmsg");
break; break;
} }
break; /* ECONNREFUSED / unexpected: stop, repaint, retry */ break;
} }
} }