Hi Ben, Yes I have looked at that code. It relies heavily on either Windows or Linux / Unix libraries and even the C libraries are not compatible with the C compiler on my system (my mainframe is 36 bit WORD based) so there are a number of issues with sizes that I am aware of and have to deal with.
Thanks for the suggestion Steve Stephen Hopson | Infrastructure Architect | Enterprise Solutions Unisys | +44 (0)1908 805010 | +44 (0)7557 303321 | stephen.hop...@gb.unisys.com THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all devices. -----Original Message----- From: Ben Davison [mailto:ben.davi...@7digital.com] Sent: 03 March 2016 16:19 To: users@kafka.apache.org Subject: Re: Writing a Producer from Scratch Hi Stephen, Have you checked out https://github.com/edenhill/librdkafka ? It might be what you need (I don't do C, so it might not be right for you) Regards, Ben On Thu, Mar 3, 2016 at 10:47 AM, Hopson, Stephen < stephen.hop...@gb.unisys.com> wrote: > Hi, > > Not sure if this is the right forum for this question, but if it not I’m > sure someone will direct me to the proper one. > > Also, I am new to Kafka (but not new to computers). > > > > I want to write a kafka producer client for a Unisys OS 2200 mainframe. I > need to write it in C, and since I have no access to Windows / Unix / Linux > libraries, I have to develop the interface at the lowest level. > > > > So far, I have downloaded a kafka server with associated zookeeper (kafka > _2.10-0.8.2.2). Note I have downloaded the Windows version and have it > running on my laptop, successfully tested on the same laptop with the > provided provider and consumer clients. > > > > I have developed code to open a TCP session to the kafka server which > appears to work and I have attempted to send a metadata request which does > not appear to work. When I say it does not appear to work, I mean that I > send the message and then I sit on a retrieve, which eventually times out ( > I do seem to get one character in the receive buffer of 0235 octal). The > message format I am using is the one described by the excellent document by > Jay Creps / Gwen Shapira at > https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol > However, it is not clear what level of kafka these message formats are > applicable for. > > > > Can anybody offer me any advice or suggestions as to how to progress? > > > > PS is the CRC mandatory in the Producer messages? > > Many thanks in advance. > > > > *Stephen Hopson* | Infrastructure Architect | Enterprise Solutions > > Unisys | +44 (0)1908 805010 | +44 (0)7557 303321 | > stephen.hop...@gb.unisys.com > > > > [image: unisys_logo] <http://www.unisys.com/> > > > > THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY > MATERIAL and is for use only by the intended recipient. If you received > this in error, please contact the sender and delete the e-mail and its > attachments from all devices. > > > -- This email, including attachments, is private and confidential. If you have received this email in error please notify the sender and delete it from your system. Emails are not secure and may contain viruses. No liability can be accepted for viruses that might be transferred by this email or any attachment. Any unauthorised copying of this message or unauthorised distribution and publication of the information contained herein are prohibited. 7digital Limited. Registered office: 69 Wilson Street, London EC2A 2BB. Registered in England and Wales. Registered No. 04843573.
