Thanks!! The blocking io api definitely allows this (I checked it before posting my original post), it results in a datagram consisting only of the 8 UDP header bytes. For nio it seems impossible to tell if passing the datagram to the system buffer actually worked...
Am Dienstag, 28. April 2015 11:13:05 UTC+2 schrieb drewhk: > > Hi Felix, > > I just opened a ticket: https://github.com/akka/akka/issues/17325 > > We need to check if it is possible to reliably distinguish zero length UDP > datagrams with NIO though > > -Endre > > On Mon, Apr 27, 2015 at 12:37 PM, <[email protected] <javascript:>> > wrote: > >> Dear group, >> >> I am trying to send an empty datagram back to a client. This seems not to >> be supported. The same code works just fine is the datagram payload is >> non-empty: >> >> // MyProxy is a 'bound UDP' server >> MyProxy extends Actor { >> >> .... >> >> def receive = { >> case res: ProxyResponse => >> val rdata = encodeToBlob(res) >> socket ! Send(rdata, remote) <-- works if >> rdata.size()>0, does not work for ByteString.empty and ByteString("") >> } >> >> } >> >> >> Would you agree that this is a bug? >> >> cheers, >> felix >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at http://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
