[Q&A] Why do I get a "SSL_read: unexpected eof while reading" warning for a basic request

[lawrenz1]

What is a problem?

def main():
    with requests.Session() as session:
        payload = {
            'key1': 'value1',
            'key2': 'value2'
        }

        headers = {}

        response = session.post(url, json=payload, verify=cert_path, headers=headers, stream=False)

        full_body = response.text   
        print(f"Response body: {full_body}")

        response.close()

2025-01-29 20:15:52.244928698 +0000 debug.test: {"key1":"value1","key2":"value2"}
2025-01-29 20:15:52 +0000 [warn]: #0 fluent/log.rb:383:warn: close socket due to unexpected ssl error: SSL_read: unexpected eof while reading

Here I am doing a basic POST to fluentd. Does fluentd not support keep-alive connections without logging this warning every time?

Describe the configuration of Fluentd

<source>
  @type http
  bind 0.0.0.0
  <transport tls>
    cert_path cert.pem
    private_key_path key.pem
  </transport>
  port 8887
</source>

Describe the logs of Fluentd

2025-01-29 20:15:52.244928698 +0000 debug.test: {"key1":"value1","key2":"value2"}
2025-01-29 20:15:52 +0000 [warn]: #0 fluent/log.rb:383:warn: close socket due to unexpected ssl error: SSL_read: unexpected eof while reading

Environment

- Fluentd version:
- TD Agent version:
- Fluent Package version:
- Docker image (tag):
- Operating system:
- Kernel version: