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0
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0answers
635 views

Fixed Sized Buffer or Variable Buffers with C# Sockets

I am busy designing a TCP Server class in C# that has events and allows the user of the class to define packets that the server can send a receive by registering a class that is derived from my "...
1
vote
2answers
2k views

Android Design - Service vs Thread for Networking

I am writing an Android app, finally (yay me) and for this app I need persistant, but user closeable, network sockets (yes, more than one). I decided to try my hand at writing my own version of an ...
3
votes
1answer
867 views

Is ZeroMQ a good choice to make a Python app and a C# managed assembly work together?

I have a task that involves talking to a .NET-based API (namely AutoCAD) to retrieve data, send commands, and react to events. I want to separate the API operations and the proper program logic (...
3
votes
1answer
485 views

Are there security implications to using dynamically-assigned TCP port numbers?

I'm getting pushback from operations for having a server process listen on a dynamically-assigned port number (i.e. it binds a socket to a port number of 0, triggering a dynamic assignment by the OS, ...
1
vote
1answer
499 views

Best approach for near real time message passing from server to client across router?

I am developing an application which must run on up to thousands of client systems that I control (Linux) which are connected behind common NAT devices to public Internet. Each of these client ...
14
votes
1answer
759 views

What did network programs use to communicate before sockets was invented (around 1983?)

Sockets were invented in Berkeley around 1983, but how did networked computer programs work before this? These days, pretty much everything uses sockets, so it's hard for me to imagine how else ...
0
votes
1answer
955 views

Java: How to manage UDP client-server state

I am trying to write a Java application that works similar to MapReduce. There is a server and several workers. Workers may come and go as they please and the membership to the group has a soft-state. ...
1
vote
2answers
202 views

Examples of UNIX Domain Socket Usage [closed]

Can anyone give an example of instances in which the AF_UNIX i.e unix domain sockets are used for process communication in a unix-based system
0
votes
1answer
506 views

For a socket based application : how must I handle dynamic ip adress?

I plan to write an network application whose use steps is the following : Connect to the server and choose a name (and enter your email "id") The list of others "free" (not playing a game) players ...
3
votes
1answer
3k views

Protocol for closing a socket connection

I'm rolling my own application protocol on top of TCP. I'm using Linux and C. I'm wondering whether there is an advisable sequence to closing a socket connection. The client will always initiate ...
0
votes
1answer
299 views

Are Python sockets suitable for file synchronization?

I'm working in an organisation with limited funds. They can't afford a business account on Dropbox. However, they would find it useful to have all their files synchronized on local machines. I've ...
3
votes
1answer
11k views

Non Blocking Sockets vs Blocking sockets - UDP - C&linux

When to use blocking sockets over non blocking sockets on UDP? Question 1:What's is recommended for the following scenario ? Multiple clients send data over multiple UDP sockets, i.e. say client1 ...
3
votes
6answers
4k views

UDP order of packets with direct connection

If i have two systems (A and B) running on LAN(INTRANET) which are directly connected. There are no routers in the middle. In this case, if system A sends a few UDP packets every few milliseconds to ...
0
votes
1answer
156 views

Server distribution for high performance

I've developed a Socket Application on top of TCP in .NET C#, which allows many clients to send files from one another via a VPS I'm using. Most file transfers will occur between people in the same ...
1
vote
1answer
668 views

How do I perform some actions in my Java program whenever a particular network interface comes up?

I wanted to perform some actions in my Java program whenever a particular interface comes up (network interface ppp0 e.g.). However I figured out it was way too clumsy to keep polling the interface to ...
0
votes
3answers
2k views

Writing a TCP protocol or use HTTP for file transfer?

I want to write a server side application which allows several users to exchange files (not above 3MB) in the following way: user A connects to (server) S. User B connects to S. User C connects S. ...
3
votes
1answer
263 views

Sockets intricacies in TCP and UDP

I am quite familiar with TCP and UDP. I understand the process by which TCP establishes connections and other theoretical facts about TCP but when reading up about TCP hole punching for NAT ...
3
votes
1answer
431 views

Application protocols and state machines: designing a complicated server

I'm designing and prototyping a server that has the following characteristics: during the daemon's initialization it spawns nine "manager" servers, each of which solves one part of the overall ...
2
votes
2answers
4k views

Realtime (almost) bidrectional communication in Java

I will explain the context of the problem first. For a University project I'm going to implement an Android application. The Android application (and others) will be able to send data to a remote ...
7
votes
2answers
4k views

What are the pros and cons of Inter process communication done via sockets vs shared memory?

I understand that two of the many more options for inter process communication can be : Shared memory Sockets Actually I saw these two options being exposed by Intellij Idea for debugging a Java ...
2
votes
2answers
901 views

How to plan a client/server app networking architecture to cope with multiple unrelated exchanges of data?

I'm coding a server/client application pair in Java, as I learn about it. I have basic functionality of sending a message to the server and parsing it but in thinking about the big picture of their ...
0
votes
1answer
163 views

Creating a remote management interface

I'm looking for info on creating a remote management interface for our software. This is not anything illicit. Our software is for live TV production and once they go on-air we can't access the PC (...
1
vote
2answers
465 views

Implementing the transport layer for a SIP UAC

I have a somewhat simple, but specific, question about implementing the transport layer for a SIP UAC. Do I expect the response to a request on the same socket that I sent the request on, or do I let ...
96
votes
6answers
52k views

Difference between a socket and a port

Could someone please explain quite clearly the difference between a port and a socket. I know that a port serves as a door into the network for an application process and that the application process ...
4
votes
6answers
11k views

Serializing Data Structures in C [closed]

I've recently read three separate books on algorithms and data structures, tcp/ip socket programming, and programming with memory. The book about memory briefly discussed the topic of serializing data ...
2
votes
1answer
369 views

What to choose API based server or Socket based server for data driven application

I am working on a project which has a Desktop Application for MAC/COCOA, a native application for iPhone another native application in iPad. All the application do almost same thing. The applications ...
2
votes
1answer
244 views

Setting source IP with posix sockets

Is it possible for an application to request a socket (tcp) and have it set the source address without using raw sockets? (the addresses would be bound to the interfaces. [no spoofing]). This would be ...
4
votes
1answer
1k views

How much overhead is there in persistent connections?

Ok so I'm musing over a little side project I want to start. Essentially its a multi-session web based FTP client. Multi-session in that you can log into several FTP servers at the same time and ...
3
votes
2answers
193 views

How to find an error in a tcp server application for which there is no source code

I have a c++/cli tcp client application sending a data in a specific format like L,20100930033425093,-5.929958,13.164021 to a main application on port 9000.The main application is actually done by the ...
0
votes
1answer
527 views

Time Tracking - Best method?

I'm looking to track the time it takes users to traverse through a few forms I have on a website. My old thought was to use something like jQuery to poll the server updating the time spent on a page, ...
0
votes
1answer
738 views

PHP, when to use iterators, how to buffer results?

When is it best to use Iterators in PHP, and how can they be implemented to best avoid loading all objects into memory simultaneously? Do any constructs exist in PHP so that we can queue up results of ...
11
votes
3answers
3k views

Simple explanation of the Unix sockets

I can search and I've already looked at the wikipedia entry and in some other places, but even though I have some programming experience, I don't really grasp the concept. Can you treat me like a 10 ...
4
votes
2answers
1k views

How to match responses from a server with their corresponding requests?

There is a server that responds to requests on a socket. The client has functions to emit requests and functions to handle responses from the server. The problem is that the request sending function ...
7
votes
1answer
1k views

Solutions for implementing a full-duplex game server?

I am designing a game server which would be used for Android terminals. I've been searching for products or frameworks to use for two-way socket communication but haven't found anything worth ...
9
votes
3answers
8k views

Difference between networking programming and socket programming

Are there any major differences when we talk about "socket programming" compared to "network programming"? Are there some topics that cover "network programming" but not "socket programming"?
0
votes
1answer
341 views

How to Improve this socket over TCP-IP system

Im new to Socket programming and im building a Socket over TCP-IP system with this architecture: Server: Basically a TCPIP Listener that waits for connection from the clients. Client: It knows the ...
12
votes
4answers
4k views

How to handle Real Time Data from a database perspective?

I have an idea in mind, but it still confuses me the database area. Imagine that I want to show real time data, and using one of the latest browser technologies (web sockets - even using older ...
10
votes
3answers
6k views

Is there an alternative to HTML Web Sockets, now that Firefox 4 has disabled them?

I've been checking out some of the latest multiplayer engines in HTML all supporting multi-user games (Very nice) - I believe all these engines use Web Sockets for communication. That’s why we’ve ...