Question

Multithreaded Sockets for Linux

Asked by: -Karamja-

Hello,

Im looking to make a client/server application where the server will be running on a linux environment.

After looking around I can only find single threaded socket examples, however for my needs I will be needing multi threaded, please can you provide me source and/or documentation for making multi threaded socket application for linux.

Will be complied using gcc.

Thanks.

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Asked On
2007-06-28 at 15:01:41ID22665559
Tags

linux

,

socket

,

multithreaded

Topic

C++ Programming Language

Participating Experts
3
Points
335
Comments
4

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Answers

 

by: trigger-happyPosted on 2007-06-28 at 21:03:44ID: 19386443

You can opt for a cross platform server by making use of C++ and asio. Asio is a networking library that works well with C++ boost.
http://asio.sourceforge.net/

--trigger-happy

 

by: Infinity08Posted on 2007-06-29 at 01:49:09ID: 19387328

When it comes to socket programming, I always recommend this tutorial ("Beej's Guide to Network Programming") :

        http://www.beej.us/guide/bgnet/

Although it doesn't specifically talk about using threads, it can still be interesting.

Now, on to your question.

For threads, I can recommend the pthread library (POSIX threads). A tutorial (haven't read it myself, but looks good enough) :

        http://www.yolinux.com/TUTORIALS/LinuxTutorialPosixThreads.html


For example code, combining socket programming and pthreads, here's a few that I found with Google :

        http://eth0.graegert.com/index.php?section=docsys&cmd=details&id=10 (scroll down to "Multi-threaded server")

        http://www.lambdacs.com/classes/programs_6_Oct_02.tar.gz (a lot of sample code for pthreads, including socket programming)

 

by: aatrish2001Posted on 2007-07-02 at 05:11:59ID: 19402689

weel there is another approach which u can do. try to create a application in which one thread is always in listen mode and whenever any client want to bind with the server it create a new thread and bind the application with that thread . its is quite neet and better approach.....any other help is welcomed  regarding  code level


//this is a thread fuction which will always listen for any bind request

bool CSocket::Listen(int iPortNo, int iQueue)
{
      m_SockAddr.sin_port=htons(iPortNo);

      m_SockAddr.sin_addr.s_addr=htonl(INADDR_ANY);

      int ret = bind(m_iSocketFD,(sockaddr *)&(m_SockAddr),sizeof(m_SockAddr));

      if(ret == -1) return false;
            
      ret = listen(m_iSocketFD, iQueue);

      try{
      ret = pthread_create(&m_ThreadListenID, NULL, ThreadListen, this);
      }catch(...){
            printf("... Exception in Creation of Thread...\n");
            return false;
      }
      
//

like that u need to build logic when any request server recive he just create new thread and bind client with it.

so ur application can be binded with multiple client at same time using various thread


      if(ret      != 0) return false;

      if(ret == -1) return false;

      return true;
}

20120131-EE-VQP-002

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