topic Re: storing receiving packets in Operating System - HP-UX

storing receiving packets

Shivakumar_3 — Mon, 17 Oct 2005 01:33:44 GMT

hello everybody,
I will be receiving packets from client program.The packets i receive will be from different departments like containing different data.I want to store the packet in memory so that i can access that memory through another process.My question is which ipc concept can i use to store these packets(like message queues or shared memory) .Like i will be receving packets every minute from different departments and depending on the department name i should store the packets.The packet size is fixed that is 512kb. Advanced thanks for reply.

Re: storing receiving packets

Muthukumar_5 — Mon, 17 Oct 2005 01:36:49 GMT

Use shared memory to accomplish this.

Use this: http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=ShmemExt

hth.

Re: storing receiving packets

VEL_1 — Mon, 17 Oct 2005 01:50:29 GMT

Hi,

You can use either message queue or semaphore. it depends. Just look at the following link:

http://www.developerweb.net/forum/archive/index.php/t-3435.html

Note:
To know the KEY of semaphores or message queues, just use the "ipcs" command.

Thanks.

Re: storing receiving packets

rick jones — Tue, 18 Oct 2005 11:19:27 GMT

It is a nit, but sometimes nits can be important - applications are said to pass around _messages_ not packets. So, you have a fixed message size of 512kb, which will be some number of TCP segments, which will then be some number of IP datagrams, which may then be some number of Ethernet frames.