I am relatively new to the C language, but I'm a very fast learner. I'm looking to do some basic network programming in C but I'm not sure how to start. Could anyone point me to a good guide or tutorial for C Network Programming? ...
I am developing an online strategy game using .Net v2. Although the game is primarily strategic, it does have some tactical elements that require reasonable network performance. I plan to use TCP packets for strategic data and UDP packets for tactical data. {EDIT} I forgot to mention that I am leaning away from WCF and .NET 3+ for a co...
I am a bit confused about socket programming in C. You create a socket, bind it to an interface and an IP address and get it to listen. I found a couple of web resources on that, and understood it fine. In particular, I found an article Network programming under Unix systems to be very informative. What confuses me is the timing of dat...
I have a classic client/server (fat client and database) program written in Delphi 2006. When certain conditions are met in the client, I need to notify all the other clients very quickly. Up until now this has been done using UDP broadcasts, but this is no longer viable as clients now connect from outside the LAN and the UDP broadcast i...
I have a network C++ program in Windows that I'd like to test for network disconnects at various times. What are my options? Currently I am: Actually disconnecting the network wire from the back of my computer using ipconfig /release Using the cports program to close out the socket completely None of these methods though are ideal ...
Despite the documentation, NetworkStream.Write does not appear to wait until the data has been sent. Instead, it waits until the data has been copied to a buffer and then returns. That buffer is transmitted in the background. This is the code I have at the moment. Whether I use ns.Write or ns.BeginWrite doesn't matter - both return imme...
I'm receiving a recovery feed from an exchange for recovering data missed from their primary feed. The exchange strongly recommends listening to the recovery feed only when data is needed, and leaving the multicast once I have recovered the data I need. My question is, if I am using asio, and not reading from the NIC when I don't need ...
When writing a custom server, what are the best practices or techniques to determine maximum number of users that can connect to the server at any given time? I would assume that the capabilities of the computer hardware, network capacity, and server protocol would all be important factors. Also, would you consider it to be a good prac...
Hi there, i'm begining on a new proyect that need to collect data from some VoIP network equiment, and i thinking to make a python app using some network library and need know some intersting Books or web resources about the netwoking library in python. best regards. ...
I'd like to search for a given MAC address on my network, all from within a Python script. I already have a map of all the active IP addresses in the network but I cannot figure out how to glean the MAC address. Any ideas? ...
I've had a bug in our software that occurs when I receive a connection timeout. These errors are very rare (usually when my connection gets dropped by our internal network). How can I generate this kind of effect artificially so I can test our software? If it matters the app is written in C++/MFC using CAsyncSocket classes. Edit: I'v...
I'm porting old VB6 code that uses the Winsock control to C#. I haven't done any socket programming and I wonder if anyone has a good reference/tutorial/howto that I can use to start getting up to speed. I'm appealing to the hive mind while I proceed with my generally unproductive googling. I'm using UDP, not TCP at this time. ...
How do I discover how many bytes have been sent to a TCP socket but have not yet been put on the wire? Looking at the diagram here: I would like to know the total of Categories 2, 3, and 4 or the total of 3 and 4. This is in C(++) and on both Windows and Linux. Ideally there is a ioctl that I could use, but there doesn't seem to be ...
If you have a situation where a TCP connection is potentially too slow and a UDP 'connection' is potentially too unreliable what do you use? There are various standard reliable UDP protocols out there, what experiences do you have with them? Please discuss one protocol per reply and if someone else has already mentioned the one you use ...
Does anyone know of any problems with using WCF to expose a SOAP interface for non .NET clients? For example incompatibilities with other SOAP libraries? This is so that the SOAP interface can be exposed for third parties to integrate with our software. ...
Ok, I realize this situation is somewhat unusual, but I need to establish a TCP connection (the 3-way handshake) using only raw sockets (in C, in linux) -- i.e. I need to construct the IP headers and TCP headers myself. I'm writing a server (so I have to first respond to the incoming SYN packet), and for whatever reason I can't seem to ...
How do you do low low level sockets in C, example: actually sending a SYN. ...
I'm working on an embedded linux system in C, I'm looking for the source code to the equivalet of SendARP in Windows. Any pointers? ...
I'm experimenting with OpenSSL on my network application and I want to test if the data sent is encrypted and can't be seen by eavesdropper. What tools can you use to check? Could this be done programmatically so it could be placed in a unit test? ...
Are there any templates/patterns/guides I can follow for designing a multithreaded server? I can't find anything terribly useful online through my google searches. My program will start a thread to listen for connections using TcpListener. Every client connection will be handled by it's own IClientHandler thread. The server will wrap ...