C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  C++ Network Solution -- Where should I begin?          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message Tom Guest Posted: Sun Jan 29, 2006 9:00 am    Post subject: C++ Network Solution -- Where should I begin? My skill level is intermediate in C and beginner in C++. I need to learn how to create a centralized program to interface with remote programs running over a local, hardwired network. My scenario is the following: The centralized program is the global accountant for the remote computers. The remote computers are running independent optimization programs that seek permission from the global accountant to initiate a position in a financial instrument(commodity, index future, currency, etc.). If permission is granted ... the remote computers periodically report to the accountant the current profit/loss status of that particular position. My networking skill level is total novice. I need beginner level examples and books so basic they even teach the nomenclature. Please advise me about how and where to begin. Perhaps there are some canned utility programs that provide the backbone for this task? The logging on of a remote computer while other clients are "in session" seems a daunting task for me. Maybe this is what the dot.net stuff is all about? Thank you in advance for any help and even for your time to have read the above. -- Tom Back to top Luke Meyers Guest Posted: Sun Jan 29, 2006 9:00 am    Post subject: Re: C++ Network Solution -- Where should I begin? Tom wrote: Quote: My skill level is intermediate in C and beginner in C++. I need to learn how to create a centralized program to interface with remote programs running over a local, hardwired network. Client/server model; gotcha. Quote: The centralized program is the global accountant for the remote computers. The remote computers are running independent optimization programs that seek permission from the global accountant to initiate a position in a financial instrument(commodity, index future, currency, etc.). If permission is granted ... the remote computers periodically report to the accountant the current profit/loss status of that particular position. Okay, sounds straightforward. The clients send a task description to the server, which responds by granting or denying permission. They send a different type of message to report status. Season to taste. Probably easiest with an event model driven by an in- and out-queue for each client and for the server. Quote: My networking skill level is total novice. I need beginner level examples and books so basic they even teach the nomenclature. Andrew Tanenbaum's networking book is a classic introductory survey, and it's pretty easy to find a cheap used copy. Check on amazon. Quote: Perhaps there are some canned utility programs that provide the backbone for this task? Certainly; there is a wide variety of networking libraries available. However, you should make some decisions about your design before getting too deep into the details. First learn enough to make an informed decision about what kind of networking to use, then focus your search on libraries specific to that technology. Quote: The logging on of a remote computer while other clients are "in session" seems a daunting task for me. In what sense would the clients be "in session?" From your description, they sound fairly autonomous. Organize it in terms of messages and queues and you'll have no problem. Quote: Maybe this is what the dot.net stuff is all about? While .NET (like many things) partly involves network technology, it is by no means "the way to do networking." There are plenty of resources to tell you more about it, if you want to understand what it is. There are also many ways to do networking that have been around a lot longer. Luke Back to top loufoque Guest Posted: Sun Jan 29, 2006 4:00 pm    Post subject: Re: C++ Network Solution -- Where should I begin? Tom a écrit : Quote: My networking skill level is total novice. I need beginner level examples and books so basic they even teach the nomenclature. You will need to learn about sockets. You can use the C posix sockets library or C++ libraries like ASIO (http://asio.sourceforge.net/) Quote: Maybe this is what the dot.net stuff is all about? ..NET is a multi-language framework designed for win32 that interacts very badly with C++, actually creating a totally different language : C++/CLI. If you want to do .NET stuff you'd better use C#, which was designed to fit with that framework. Back to top Victor Bazarov Guest Posted: Sun Jan 29, 2006 6:00 pm    Post subject: Re: C++ Network Solution -- Where should I begin? loufoque wrote: Quote: [..] .NET is a multi-language framework designed for win32 that interacts very badly with C++, actually creating a totally different language : C++/CLI. I think that your "totally different" statement is uncalled for. C++ is just as "totally different" from C then. (Hint: it's not) Back to top Luke Meyers Guest Posted: Sun Jan 29, 2006 8:00 pm    Post subject: Re: C++ Network Solution -- Where should I begin? Victor Bazarov wrote: Quote: loufoque wrote: [..] .NET is a multi-language framework designed for win32 that interacts very badly with C++, actually creating a totally different language : C++/CLI. I think that your "totally different" statement is uncalled for. C++ is just as "totally different" from C then. (Hint: it's not) It's not? I suppose if you define "totally different" as "completely lacking resemblance or commonality," then yes. But if what's meant is "distinct, and different in many important or even fundamental ways," then I think it's perfectly accurate. C++ is a very different animal from C. They share plenty of syntax, but the best approaches to C++ programming are far from possible in C; that's why C++ exists. C++/CLI introduces a bunch of new constructs which some people find helpful, and in many cases trades those off against some of C++'s benefits. The Java-like use of a virtual machine, and the increased emphasis on dynamic typing, are significant departures from C++ canon. Lastly, because the name "C++/CLI" can be misleading, it's best to err on the side of pointing out that it's not "the new C++" or anything like that. Microsoft's own documentation makes this mistake regularly. Luke Back to top Victor Bazarov Guest Posted: Sun Jan 29, 2006 9:00 pm    Post subject: Re: C++ Network Solution -- Where should I begin? Luke Meyers wrote: Quote: Victor Bazarov wrote: loufoque wrote: [..] .NET is a multi-language framework designed for win32 that interacts very badly with C++, actually creating a totally different language : C++/CLI. I think that your "totally different" statement is uncalled for. C++ is just as "totally different" from C then. (Hint: it's not) It's not? Of course it's not. Just read D&E. Quote: I suppose if you define "totally different" as "completely lacking resemblance or commonality," then yes. But if what's meant is "distinct, and different in many important or even fundamental ways," "Many important" is definitely much less than "totally". We can continue this discussion in 'alt.english.usage'. Quote: [...] V Back to top Luke Meyers Guest Posted: Sun Jan 29, 2006 10:00 pm    Post subject: Re: C++ Network Solution -- Where should I begin? Victor Bazarov wrote: Quote: Luke Meyers wrote: Victor Bazarov wrote: I think that your "totally different" statement is uncalled for. C++ is just as "totally different" from C then. (Hint: it's not) It's not? Of course it's not. Just read D&E. I have. I maintain that C++/CLI is a different language than C++, and that C++ is a different language than C. In all cases, there are overlapping subsets of compatibility where semantics are preserved. That doesn't make them the same. More importantly, the preferred paradigms of each language are not particularly philosophically compatible with those of the others. C++/CLI runs in many ways contrary to the fundamental design values of C++. In the original context, the purpose of the statement was that the OP's offhand question about .NET was misguided, because the binding of C++ to .NET (C++/CLI) is not C++ at all, but a distinct language which does not conform to the C++ standard or language philosophy. Debate the subtleties or disagree if you want, but it's a perfectly "called for" point to make. Luke Back to top Jim Langston Guest Posted: Sun Jan 29, 2006 11:00 pm    Post subject: Re: C++ Network Solution -- Where should I begin? "Tom" <Thomas-911 (AT) earthlink (DOT) net> wrote in message news:molot1d8hn4im0n8sdr6uda0hnspkkn05j (AT) 4ax (DOT) com... Quote: My skill level is intermediate in C and beginner in C++. I need to learn how to create a centralized program to interface with remote programs running over a local, hardwired network. My scenario is the following: The centralized program is the global accountant for the remote computers. The remote computers are running independent optimization programs that seek permission from the global accountant to initiate a position in a financial instrument(commodity, index future, currency, etc.). If permission is granted ... the remote computers periodically report to the accountant the current profit/loss status of that particular position. My networking skill level is total novice. I need beginner level examples and books so basic they even teach the nomenclature. Please advise me about how and where to begin. Perhaps there are some canned utility programs that provide the backbone for this task? The logging on of a remote computer while other clients are "in session" seems a daunting task for me. Maybe this is what the dot.net stuff is all about? Thank you in advance for any help and even for your time to have read the above. -- Tom It sounds like you need to do a bit of research on client/server architecture. There are a number of ways to do what you want and you need to determine which way you want to do it/which is best for you. A few questions you'll need to ask yourself. Are the remote computers going to be consitantly connected to the server or are they going to connect, get request then disconnect? If they are constantly connected, how are you going to handle disconnects? If they are constantly connected, how do the clients (remote computers) react when the main server goes down? In what method are the remote computers going to state who they are to the server? Plus many more. Start searching for client/server on the internet and looking at the different types of architectures. I did a quick search and this one gives a rough breakdown on some of them: http://www.sei.cmu.edu/str/descriptions/clientserver_body.html Good luck. 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