Seldaek/monolog · error · RuntimeException

Write timed-out, no data sent for `{$this->writingTimeout}`

Error message

Write timed-out, no data sent for `{$this->writingTimeout}` seconds, probably we got disconnected (sent $sent of $length)

What it means

Error "Write timed-out, no data sent for `{$this->writingTimeout}` seconds, probably we got disconnected (sent $sent of $length)" thrown in Seldaek/monolog.

Source

Thrown at src/Monolog/Handler/SocketHandler.php:404

        $sent = 0;
        $this->lastSentBytes = $sent;
        while ($this->isConnected() && $sent < $length) {
            if (0 === $sent) {
                $chunk = $this->fwrite($data);
            } else {
                $chunk = $this->fwrite(substr($data, $sent));
            }
            if ($chunk === false) {
                throw new \RuntimeException("Could not write to socket");
            }
            $sent += $chunk;
            $socketInfo = $this->streamGetMetadata();
            if (\is_array($socketInfo) && (bool) $socketInfo['timed_out']) {
                throw new \RuntimeException("Write timed-out");
            }

            if ($this->writingIsTimedOut($sent)) {
                throw new \RuntimeException("Write timed-out, no data sent for `{$this->writingTimeout}` seconds, probably we got disconnected (sent $sent of $length)");
            }
        }
        if (!$this->isConnected() && $sent < $length) {
            throw new \RuntimeException("End-of-file reached, probably we got disconnected (sent $sent of $length)");
        }
    }

    private function writingIsTimedOut(int $sent): bool
    {
        // convert to ms
        if (0.0 === $this->writingTimeout) {
            return false;
        }

        if ($sent !== $this->lastSentBytes) {
            $this->lastWritingAt = microtime(true);
            $this->lastSentBytes = $sent;

View on GitHub (pinned to 57eb102834)

When it happens

Trigger: Thrown at src/Monolog/Handler/SocketHandler.php:404 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Timeouts: ETIMEDOUT, deadlines, and hung requests — what actually expires when a request times out.

AI-assisted analysis of Seldaek/monolog@57eb102834 (2026-08-17). Data as JSON: /api/errors/664bfb109cb8b5e1. Report an issue: GitHub.