Comments on: E-8 Batch – Project – Client-Server application using FIFO

By: maninderjeet singh

maninderjeet singh — Sat, 01 Sep 2012 12:30:43 +0000

i have also doing work on fifo with 3client processes.

By: maninderjeet singh

maninderjeet singh — Sat, 01 Sep 2012 12:23:10 +0000

implement fifo with single client & process…

2..my question.
why we call “semaphore” is semaphore as grammatically…….no other one word is used for this??

By: Suresh kumar

Suresh kumar — Fri, 31 Aug 2012 11:08:08 +0000

Implement the fifo project but facing some problem ,i’m getting data in server from request client but data is not transfer into process client.
working on it.

By: maninderjeet singh

maninderjeet singh — Thu, 30 Aug 2012 13:22:55 +0000

complete the fifo project for 3 clients and 3 seprate process

By: Suresh kumar

Suresh kumar — Wed, 29 Aug 2012 04:32:09 +0000

I’m implement the client server project using 6 named pipes . 3 for client and 3 for process client. I’m got correct result to all client but using 2 named pipes there is facing some problem some time we got a garbage result.

By: Ashu

Ashu — Tue, 28 Aug 2012 11:44:32 +0000

Implemented fifo poject using 6 named pipes ,3 for client process and 3 for data process,but if i use 2 named pipes 1 for client and 1 for data i am unable to geting back result,now i am using more than 3 client and data processes .

By: nishank aggarwal

nishank aggarwal — Mon, 27 Aug 2012 12:10:30 +0000

I have Implemented Project – FIFO

I use three FIFOs between requesting clients and server and three between server and processing clients , I am able to receive responses to requests back on requesting clients.

there is a priority set that i can send request first from client1 at first,then from client2,& them from client3……but if i sending request from client2 first then it unable to read the data at server……….

By: nidhi

nidhi — Mon, 27 Aug 2012 04:31:04 +0000

I have done fifo project

By: sandeep.kumar

sandeep.kumar — Mon, 27 Aug 2012 04:24:11 +0000

fifo for n clients done. multiple client fifos and single server fifo.

By: Suresh

Suresh — Sun, 26 Aug 2012 13:05:44 +0000

Implement the ipc project using 6 named pipes but facing some problem.
Problem is, after execution of all client and processing client simutaneously i got garbage result ,some time it give correct result for only 1client but some time it shows garbage. And some time my server goes in wait state.
How can i modify it or some thing is wrong in my implementation.
I make 2 scipt to execute all client and all processing client at a time.

By: nishank aggarwal

nishank aggarwal — Sun, 26 Aug 2012 10:50:29 +0000

I have implemented IPC using fifos for one requesting client and one processing client.
In this i made a server in which fifo is created using access and mkfifo, then made a client and data processing client.
In single client server data is properly send and received.now i m working for more than one client….

By: sumit ahuja

sumit ahuja — Fri, 24 Aug 2012 19:49:22 +0000

i ve implemented my project using 2 fifos ,, 1 for reequesting client n server,, n other 4 processing client n server..

but the problems i m facing are:-

cant use O_WRONLY|O_NONBLOCK,, neither use NONBLOCK with RDONLY..in case of WRONLY it gives -1 for open()..n RDONLY returns immediately..so data is not read properly..

So i ve to do using O_RDONLY n O_WRONLY..it goes in read on block with the server n at the same tym i ve 2 execute ol my clients..but the data read comes in a shuffled way..it gets mixed..i tried to solve it using wait between every write() with clients..but nothing changes..so itz not being read correctly by the processing client..

NOW m trying using 6 fifos..n then will start with semaphore..

By: yashvardhan

yashvardhan — Fri, 24 Aug 2012 09:04:08 +0000

Implemented Project – FIFO

Case 1. If I use three FIFOs between requesting clients and server and three between server and processing clients , I am able to receive responses to requests back on requesting clients. -> No issues.

Case 2: If I use 1 FIFO between requesting clients and server and three FIFOs between server and processing clients, I am able to get processed data successfully on server but when I write this bundled data into “requesting client-server” FIFO, requesting clients read this data randomly and end up getting results of one another
issue -> need some mechanism that can tell that this data is intended to this particular requesting client and no other requesting client should access this.

case 3: When I use one FIFO between server and requesting clients and one between server and processing clients .
issue -> If I write these different requests into “server-processing clients” FIFO, again I need some mechanism that can tell that this data is intended to this particular processing client and no other processing client should access this.

Thanks

By: sourabh.bansal

sourabh.bansal — Fri, 24 Aug 2012 09:03:17 +0000

If I am using 6 fifo then request data processing and return result through Server is successful…

Now,I have implement using 2 fifo. one fifo between request clients and server and another one in Process clients and server.
Server is able to receive data from all clients in single buffer, now I am writing data in another fifo for processing. Process clients are receiving data but not in sequence as we want.

My issue is that how mention that client one data should receive by Process 1 client and so on…..

By: sourabh.bansal

sourabh.bansal — Fri, 24 Aug 2012 06:25:47 +0000

Implement 3 request client and 3 Process client with 1 server using 2 fifo but I am not sure about that is it simultaneous…

case 1.
Executing 3 requests on different terminals then execute server, able to access data on server but not in sequence as i am executing clients…
case 2.
Executing 3 requests and 3 process on different terminals then execute server, able to access data on server and able to read data on process.
Is it simultaneous ? can anybody let me know ?