Hello! On Thu, Jul 18, 2019 at 10:03:24AM -0700, Palvelin Postmaster via nginx wrote:
> we’re getting random SSL_write() failed errors on seemingly > legitimate requests. The common denominator seems to be they are > all for static files (images, js, etc.). > > Can anyone help me debug the issue? > > Here’s a debug log paste for one incident: > https://pastebin.com/ZsbLuD5N > > Our architecture is: Amazon ALB > Nginx 1.14 > PHP-FPM 7.3 The following debug log: 2019/07/18 19:27:25 [debug] 1840#1840: *2037 SSL_write: -1 2019/07/18 19:27:25 [debug] 1840#1840: *2037 SSL_get_error: 6 2019/07/18 19:27:25 [crit] 1840#1840: *2037 SSL_write() failed (SSL:) while sending response to client... suggests that this is due to error 6, that is, SSL_ERROR_ZERO_RETURN. This looks strange, as we haven't seen this error being returned from SSL_write(), but might be legitimate. In theory this can happen if nginx got a close notify SSL alert while writing a response, and probably have something to do with Amazon ALB before nginx. Just in case, could you please provide details about OpenSSL library you are using ("nginx -V" should contain enough details)? -- Maxim Dounin http://mdounin.ru/ _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
