From: tibor.repasi@... Date: 2018-10-16T13:35:59+00:00 Subject: [ruby-core:89421] [Ruby trunk Bug#15226] Resolv::DNS unable to handle responses larger than default size Issue #15226 has been reported by rtib (Tibor Repasi). ---------------------------------------- Bug #15226: Resolv::DNS unable to handle responses larger than default size https://bugs.ruby-lang.org/issues/15226 * Author: rtib (Tibor Repasi) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin18] * Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN ---------------------------------------- The actual implementation of Resolve::DNS defines [UDPSize = 512](https://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/lib/resolv.rb?view=markup#l288) as default. There is no way to initialize a Resolv::DNS instance having non-default UDPSize, as well all socket reads will be limited to this size. Also, queries responding with larger and/or fragmented packets will result in an empty set after timeout and no error is raised. Currently, Resolv::DNS is therefore limited usable in use-cases when a DNS response is larger than 512 bytes. Desirable would be to have UDPSize as configurable attribute, instead of a hard coded constant. -- https://bugs.ruby-lang.org/ Unsubscribe: