From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED.yTvCNOh9TRCAIcX40YItlQ.user.gioia.aioe.org!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Ada x Datagram Sockets Date: Fri, 8 Feb 2019 21:31:45 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <47f17695-f9a5-4024-b2da-3f13209dc4fd@googlegroups.com> <818f5ff4-f18d-42b8-950d-9b597c012aa4@googlegroups.com> <62406dfb-54c9-4db3-b461-0ad72d4a782c@googlegroups.com> NNTP-Posting-Host: yTvCNOh9TRCAIcX40YItlQ.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 X-Notice: Filtered by postfilter v. 0.9.2 Content-Language: en-US Xref: reader01.eternal-september.org comp.lang.ada:55470 Date: 2019-02-08T21:31:45+01:00 List-Id: On 2019-02-08 20:41, Rego, P. wrote: >> How is it controversial? The example works fine when the server and client >> are both written in Ada, as they would then agree on the protocol. >> But when dealing with cross-language communication, you're better off using >> Send_Socket/Receive_Socket directly. No need to re-implement > > I am trying this approach, but it seems that both g-socket.ads Send_Socket signatures also use Ada Streams > > procedure Receive_Socket > (Socket : Socket_Type; > Item : out Ada.Streams.Stream_Element_Array; > Last : out Ada.Streams.Stream_Element_Offset; > Flags : Request_Flag_Type := No_Request_Flag); > > procedure Receive_Socket > (Socket : Socket_Type; > Item : out Ada.Streams.Stream_Element_Array; > Last : out Ada.Streams.Stream_Element_Offset; > From : out Sock_Addr_Type; > Flags : Request_Flag_Type := No_Request_Flag); No. Stream_Element_Array is a plain array. Receive_Socket fill it and return the index of last updated element. declare Buffer : Stream_Element_Array (1..Max_Packet_Length); Last : Stream_Element_Offset; begin Receive_Socket (Socket, Buffer, Last); -- Buffer (1..Last) is the receipt -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de